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JP2008185808A - Image display device and driving method of image display device - Google Patents

Image display device and driving method of image display device Download PDF

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JP2008185808A
JP2008185808A JP2007019488A JP2007019488A JP2008185808A JP 2008185808 A JP2008185808 A JP 2008185808A JP 2007019488 A JP2007019488 A JP 2007019488A JP 2007019488 A JP2007019488 A JP 2007019488A JP 2008185808 A JP2008185808 A JP 2008185808A
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period
light emitting
image display
image
display unit
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JP5612241B2 (en
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Chikatomo Takasugi
่ฆช็Ÿฅ ้ซ˜ๆ‰
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Kyocera Corp
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Abstract

ใ€่ชฒ้กŒใ€‘่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ๆŠ€่ก“ใ‚’ๆไพ›ใ™ใ‚‹ใ€‚
ใ€่งฃๆฑบๆ‰‹ๆฎตใ€‘็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใจใ€่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใง่จญๅฎšใ™ใ‚‹ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใจใ‚’ๅ‚™ใˆใ€่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใฏๅฐ‘ใชใใจใ‚‚็ฌฌ๏ผ‘ใŠใ‚ˆใณ็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใจใ‚’ๆœ‰ใ—ใ€็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€ๅ„็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹ๆœŸ้–“ใจใ€ๅ„็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ€็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€๏ผ‘ไปฅไธŠใฎ็ฌฌ๏ผ‘ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใค่กจ็คบ้ƒจใซใŠใ„ใฆๅ„็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ€‚
ใ€้ธๆŠžๅ›ณใ€‘ๅ›ณ๏ผ‘๏ผ”
Provided is a technique capable of reducing power consumption while preventing a decrease in contrast of a display image.
An image display device includes a display unit having a plurality of pixel circuits and mode setting means for setting a display mode of the display unit at a predetermined timing, and the display mode of the display unit is at least first and A second display mode, and in the first display mode, a period during which a data signal is supplied to each pixel circuit, and a period during which a light emitting element in each pixel circuit emits light with a luminance corresponding to the data signal, , And a plurality of frame images are displayed in time sequence on the display unit. In the second display mode, one or more first periods and the first period are displayed. The second period having the above length and in which the light emitting elements do not emit light in the display unit is repeated in time sequence, and an image is displayed on the display unit.
[Selection] Figure 14

Description

ๆœฌ็™บๆ˜Žใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€ใŠใ‚ˆใณใใฎ้ง†ๅ‹•ๆ–นๆณ•ใซ้–ขใ™ใ‚‹ใ€‚ ย ย The present invention relates to an image display device and a driving method thereof.

ๅพ“ๆฅใ‚ˆใ‚Šใ€ๆบๅธฏ้›ป่ฉฑๆฉŸใ€ๆบๅธฏๆƒ…ๅ ฑ็ซฏๆœซ๏ผˆ๏ผฐ๏ผค๏ผก๏ผ‰ใ€ใŠใ‚ˆใณใƒ‡ใ‚ธใ‚ฟใƒซใ‚ซใƒกใƒฉใชใฉใจใ„ใฃใŸๆบๅธฏๅผใฎ่ฃ…็ฝฎไธ€่ˆฌใซใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใŒๆญ่ผ‰ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย 2. Description of the Related Art Conventionally, portable devices such as mobile phones, personal digital assistants (PDAs), and digital cameras are generally equipped with an image display device.

ใ“ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใซใฏใ€ไพ‹ใˆใฐใ€้›ป็•Œ็™บๅ…‰ใ‚’ๅˆฉ็”จใ—ใŸๆœ‰ๆฉŸ๏ผฅ๏ผฌ(Electroluminescent)็ด ๅญใ‚’็”จใ„ใŸใ‚‚ใฎใŒใ‚ใ‚‹ใ€‚ใใ—ใฆใ€ไธ€่ˆฌ็š„ใชๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญใงใฏใ€็™บๅ…‰ๅฑคใซๆตใ‚Œใ‚‹้›ปๆตใŒๅคงใใใชใ‚‹ใปใฉ็™บๅ…‰ๅผทๅบฆใŒ้ซ˜ใใชใ‚‹ใ“ใจใŒ็Ÿฅใ‚‰ใ‚ŒใฆใŠใ‚Šใ€ๅพ“ๆฅไพ‹ใจใ—ใฆใฏใ€ไพ‹ใˆใฐ็‰น่จฑๆ–‡็Œฎ๏ผ‘็ญ‰ใซ้–‹็คบใ•ใ‚Œใฆใ„ใ‚‹ใ‚‚ใฎใŒใ‚ใ‚‹ใ€‚ ย ย As this image display apparatus, for example, there is an apparatus using an organic EL (Electroluminescent) element utilizing electroluminescence. In general organic EL elements, it is known that the emission intensity increases as the current flowing in the light emitting layer increases. As a conventional example, there is one disclosed in Patent Document 1, for example.

ใจใ“ใ‚ใŒใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎไฝฟ็”จๆ™‚ใซใฏใ€ใƒใƒƒใƒ†ใƒชใƒผใฎๆถˆ่€—ใŒๆฟ€ใ—ใใ€ใƒใƒƒใƒ†ใƒชใƒผๅˆ‡ใ‚Œใซใ‚ˆใฃใฆ่ฃ…็ฝฎใŒไฝฟ็”จใงใใชใใชใ‚‹ใจใ„ใฃใŸไบ‹ๆ…‹ใ‚’ใ—ใฐใ—ใฐๆ‹›ใ„ใฆใ„ใ‚‹ใ€‚ ย ย However, when the image display device is used, the battery is often exhausted, often resulting in a situation where the device cannot be used due to running out of the battery.

ใ“ใฎใ‚ˆใ†ใชๅ•้กŒใ‚’ๅ›ž้ฟใ™ใ‚‹ใŸใ‚ใซใฏใ€็‰นใซใƒใƒƒใƒ†ใƒชใƒผใฎ่“„้›ป้‡ใŒๅฐ‘ใชใใชใ‚‹ใจใ€ๆถˆ่ฒป้›ปๅŠ›ใ‚’ไฝŽๆธ›ใ™ใ‚‹ใ“ใจใŒๆœ›ใพใ—ใใ€่กจ็คบ็”ปๅƒใฎ่ผๅบฆใฎไฝŽไธ‹ใซใ‚ˆใ‚Šๆถˆ่ฒป้›ปๅŠ›ใ‚’ไฝŽๆธ›ใ™ใ‚‹ๆŠ€่ก“ใ‚‚ๅฎŸ็”จๅŒ–ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย In order to avoid such a problem, it is desirable to reduce power consumption particularly when the amount of power stored in the battery decreases, and a technique for reducing power consumption by lowering the luminance of a display image has been put into practical use.

็‰น้–‹๏ผ’๏ผ๏ผ๏ผ–โˆ’๏ผ“๏ผ๏ผ™๏ผ’๏ผ•๏ผ˜ๅทๅ…ฌๅ ฑJP 2006-309258 A

ใ—ใ‹ใ—ใชใŒใ‚‰ใ€่กจ็คบ็”ปๅƒใฎ่ผๅบฆใ‚’ไฝŽไธ‹ใ•ใ›ใ‚‹ใจใ€ๆ˜ผ้–“ใฎ่‡ช็„ถๅ…‰ใ‚„็…งๆ˜Žใฎไธ‹ใชใฉใจใ„ใฃใŸๆ˜Žใ‚‹ใ„็’ฐๅขƒไธ‹ใงใฏใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใŒไฝŽไธ‹ใ—ใฆใ—ใพใ„ใ€ใƒฆใƒผใ‚ถใซใจใฃใฆ่กจ็คบ็”ปๅƒใฎๅ†…ๅฎนใ‚’่ญ˜ๅˆฅใ—้›ฃใ„ใ€ใ™ใชใ‚ใก่ฆ–่ชๆ€งใŒๆ‚ชใ„็Šถๆณใ‚’ๆ‹›ใ„ใฆใ—ใพใ†ใ€‚ ย ย However, when the brightness of the display image is reduced, the contrast of the display image is reduced in a bright environment such as daytime natural light or illumination, and it is difficult for the user to identify the content of the display image, that is, the visibility is low. It invites a bad situation.

ใใ—ใฆใ€ใ“ใฎใ‚ˆใ†ใชๅ•้กŒใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใซใŠใ‘ใ‚‹้›ปๅŠ›ๆถˆ่ฒป้‡ใ‚’ไฝŽๆธ›ใ—ใŸใ„ๅ ด้ขไธ€่ˆฌใซๅ…ฑ้€šใ™ใ‚‹ใ€‚ ย ย Such a problem is common to scenes in which it is desired to reduce power consumption in the image display apparatus.

ๆœฌ็™บๆ˜Žใฏใ€ไธŠ่จ˜่ชฒ้กŒใซ้‘‘ใฟใฆใชใ•ใ‚ŒใŸใ‚‚ใฎใงใ‚ใ‚Šใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ๆŠ€่ก“ใ‚’ๆไพ›ใ™ใ‚‹ใ“ใจใ‚’็›ฎ็š„ใจใ™ใ‚‹ใ€‚ ย ย The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of reducing power consumption while preventing a decrease in contrast of a display image.

ไธŠ่จ˜ใฎ่ชฒ้กŒใ‚’่งฃๆฑบใ™ใ‚‹ใŸใ‚ใซใ€่ซ‹ๆฑ‚้ …๏ผ‘ใฎ็™บๆ˜Žใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใจใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใง่จญๅฎšใ™ใ‚‹ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใจใ‚’ๅ‚™ใˆใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎๅ‰่จ˜่กจ็คบใƒขใƒผใƒ‰ใฏใ€ๅฐ‘ใชใใจใ‚‚็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใจ็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใจใ‚’ๆœ‰ใ—ใ€ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚Šใ€ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ๅฐ‘ใชใใจใ‚‚๏ผ‘ไปฅไธŠใฎๅ‰่จ˜็ฌฌ๏ผ‘ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย In order to solve the above-mentioned problems, the invention of claim 1 is an image display device, comprising: a display unit having a plurality of pixel circuits; and mode setting means for setting a display mode of the display unit at a predetermined timing; The display mode of the display unit has at least a first display mode and a second display mode, and the first display mode is a writing in which a data signal is supplied to each of the pixel circuits. A first period having a period and a light emitting period in which each light emitting element in the pixel circuit emits light with luminance corresponding to the data signal is sequentially repeated in time, and a plurality of frame images are timed in the display unit. The light emitting elements are sequentially displayed, and the second display mode has at least one or more of the first period and a length of the first period or more, and each light emitting element in the display unit. Is emitted And have a second period of time is sequentially repeated, characterized in that it is a mode in which an image is displayed in the display unit.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ’ใฎ็™บๆ˜Žใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใจใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใง่จญๅฎšใ™ใ‚‹ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใจใ‚’ๅ‚™ใˆใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎๅ‰่จ˜่กจ็คบใƒขใƒผใƒ‰ใฏใ€ๅฐ‘ใชใใจใ‚‚็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใจ็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใจใ‚’ๆœ‰ใ—ใ€ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚Šใ€ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ’ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใงใ€ๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใ‚ˆใ‚Šใ‚‚้•ทใ„ๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใจใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย According to a second aspect of the present invention, there is provided an image display device comprising: a display unit having a plurality of pixel circuits; and mode setting means for setting a display mode of the display unit at a predetermined timing. The display mode includes at least a first display mode and a second display mode. The first display mode includes a first writing period in which a data signal is supplied to each pixel circuit, and each of the above-described display modes. A first period having a first light emission period in which light emitting elements in the pixel circuit emit light at a luminance corresponding to the data signal is repeated in time sequence, and a plurality of frame images are displayed in time sequence on the display unit. The second display mode is a second writing period in which a data signal is supplied to each of the pixel circuits, and the light emitting elements in each of the pixel circuits have a luminance corresponding to the data signal, From the first light emission period A second period having a second light emitting period for emitting light for a long period, and a third period having a length equal to or longer than the first period and in which each light emitting element does not emit light in the display unit; Is a mode in which an image is displayed on the display unit in a time-sequential manner.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ“ใฎ็™บๆ˜Žใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใจใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใง่จญๅฎšใ™ใ‚‹ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใจใ‚’ๅ‚™ใˆใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎๅ‰่จ˜่กจ็คบใƒขใƒผใƒ‰ใฏใ€ๅฐ‘ใชใใจใ‚‚็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใจ็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใจใ‚’ๆœ‰ใ—ใ€ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚Šใ€ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹ๆœ€ๅพŒใฎใƒ•ใƒฌใƒผใƒ ๆœŸ้–“ใซไพ›็ตฆใ•ใ‚ŒใŸใƒ‡ใƒผใ‚ฟไฟกๅทใซๅŸบใฅใ„ใฆใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใ‚ˆใ‚Šใ‚‚้•ทใ„ๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย According to a third aspect of the present invention, there is provided an image display device, comprising: a display unit having a plurality of pixel circuits; and mode setting means for setting a display mode of the display unit at a predetermined timing. The display mode includes at least a first display mode and a second display mode. The first display mode includes a first writing period in which a data signal is supplied to each pixel circuit, and each of the above-described display modes. A first period having a first light emission period in which light emitting elements in the pixel circuit emit light at a luminance corresponding to the data signal is repeated in time sequence, and a plurality of frame images are displayed in time sequence on the display unit. The second display mode is based on the data signal supplied in the last frame period in the first display mode, and the light emitting elements in each pixel circuit are changed from the first light emission period. Length A second period having a second light emission period that emits light for a period and a third period having a length equal to or longer than the first period and in which no light emission of each light emitting element is performed in the display portion are time. It is a mode in which an image is displayed on the display unit by being sequentially repeated.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ”ใฎ็™บๆ˜Žใฏใ€่ซ‹ๆฑ‚้ …๏ผ‘ไนƒ่‡ณ่ซ‹ๆฑ‚้ …๏ผ“ใฎใ„ใšใ‚Œใ‹ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซ้›ปๅŠ›ใ‚’ไพ›็ตฆใ™ใ‚‹ใƒใƒƒใƒ†ใƒชใƒผใ‚’ๆ›ดใซๅ‚™ใˆใ€ๅ‰่จ˜ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใŒใ€ๅ‰่จ˜ใƒใƒƒใƒ†ใƒชใƒผใฎ่“„้›ป้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใจใชใฃใŸๅ ดๅˆใซใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ใ€ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ™ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย According to a fourth aspect of the present invention, there is provided the image display device according to any one of the first to third aspects, further comprising a battery for supplying power to the display unit, wherein the mode setting means includes the battery. The display mode of the display unit is set to the second display mode when the amount of stored power becomes equal to or less than a predetermined amount.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ•ใฎ็™บๆ˜Žใฏใ€่ซ‹ๆฑ‚้ …๏ผ‘ไนƒ่‡ณ่ซ‹ๆฑ‚้ …๏ผ“ใฎใ„ใšใ‚Œใ‹ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€ๅ‰่จ˜ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๅˆ‡ใ‚Šๆ›ฟใˆใ‚‹ใŸใ‚ใฎๆ“ไฝœ้ƒจใ‚’ๆ›ดใซๅ‚™ใˆใŸใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย The invention of claim 5 is the image display device according to any one of claims 1 to 3, further comprising an operation unit for switching a display mode of the mode setting means. To do.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ–ใฎ็™บๆ˜Žใฏใ€่ซ‹ๆฑ‚้ …๏ผ’ใพใŸใฏ่ซ‹ๆฑ‚้ …๏ผ“ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€ๅ‰่จ˜็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใซใŠใ‘ใ‚‹ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎๆ™‚้–“ๅฝ“ใŸใ‚Šใฎ็™บๅ…‰่ผๅบฆใŒๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใซใŠใ‘ใ‚‹ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎๆ™‚้–“ๅฝ“ใŸใ‚Šใฎ็™บๅ…‰่ผๅบฆใ‚ˆใ‚Šใ‚‚ๅฐใ•ใ„ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย The invention of claim 6 is the image display device according to claim 2 or claim 3, wherein the light emission luminance per time of the light emitting element in the second light emission period is the light emission in the first light emission period. It is characterized by being smaller than the light emission luminance per time of the element.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ—ใฎ็™บๆ˜Žใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€(a)่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใ‚’ๅ‚™ใˆใŸ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ‚’ๆบ–ๅ‚™ใ™ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€(b)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€(c)ๅฐ‘ใชใใจใ‚‚๏ผ‘ไปฅไธŠใฎๅ‰่จ˜็ฌฌ๏ผ‘ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎๆœŸ้–“ใงใ‚ใ‚Šใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ‚’ๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย The invention of claim 7 is a method of driving an image display device, comprising: (a) preparing an image display device including a display unit having a plurality of pixel circuits; and (b) each pixel circuit. A first period having a writing period in which a data signal is supplied and a light emitting period in which the light emitting element in each pixel circuit emits light with luminance corresponding to the data signal is repeated in time sequence, and the display A step of displaying a plurality of frame images in a time sequence in the unit; (c) at least one or more of the first periods; and a period of the first period or more, and each light emitting element in the display unit And a second period in which the light emission is not performed is repeated in time sequence so that an image is displayed on the display unit.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ˜ใฎ็™บๆ˜Žใฏใ€่ซ‹ๆฑ‚้ …๏ผ—ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€(d)ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€ๅ‰่จ˜(b)ใ‚นใƒ†ใƒƒใƒ—ใ‹ใ‚‰ๅ‰่จ˜(c)ใ‚นใƒ†ใƒƒใƒ—ใซ็งป่กŒใ•ใ›ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใ€
ใ‚’ๆ›ดใซๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚
The invention of claim 8 is the method for driving the image display device according to claim 7, wherein (d) a step of shifting from the step (b) to the step (c) at a predetermined timing,
Is further provided.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ™ใฎ็™บๆ˜Žใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€(A)่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใ‚’ๅ‚™ใˆใŸ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ‚’ๆบ–ๅ‚™ใ™ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€(B)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€(C)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ’ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใงใ€ๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ไปฅไธŠใฎๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใจใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ‚’ๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย The invention of claim 9 is a method for driving an image display device, comprising: (A) preparing an image display device including a display unit having a plurality of pixel circuits; and (B) each of the pixel circuits. A first period having a first writing period in which a data signal is supplied and a first light emitting period in which the light emitting element in each pixel circuit emits light with luminance corresponding to the data signal is repeated in time sequence. A step of sequentially displaying a plurality of frame images on the display unit; (C) a second writing period in which a data signal is supplied to each of the pixel circuits; and a light emitting element in each of the pixel circuits. A second period of light having a luminance corresponding to the data signal and a second light emitting period for emitting light for a period equal to or longer than the first light emitting period; and a length equal to or longer than the first period; The third period in which each light emitting element does not emit light is It is sequentially repeated, characterized in that it comprises the steps of image is displayed in the display unit.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ‘๏ผใฎ็™บๆ˜Žใฏใ€่ซ‹ๆฑ‚้ …๏ผ™ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€(D)ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€ๅ‰่จ˜(B)ใ‚นใƒ†ใƒƒใƒ—ใ‹ใ‚‰ๅ‰่จ˜(C)ใ‚นใƒ†ใƒƒใƒ—ใซ็งป่กŒใ•ใ›ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใ‚’ๆ›ดใซๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย The invention of claim 10 is the image display apparatus driving method according to claim 9, further comprising the step of (D) shifting from the step (B) to the step (C) at a predetermined timing. It is characterized by providing.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ‘๏ผ‘ใฎ็™บๆ˜Žใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€(A)่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใ‚’ๅ‚™ใˆใŸ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ‚’ๆบ–ๅ‚™ใ™ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€(B)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€(C)ๅ‰่จ˜็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใซใŠใ‘ใ‚‹ๆœ€ๅพŒใฎใƒ•ใƒฌใƒผใƒ ๆœŸ้–“ใซไพ›็ตฆใ•ใ‚ŒใŸใƒ‡ใƒผใ‚ฟไฟกๅทใซๅŸบใฅใ„ใฆใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ไปฅไธŠใฎๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ‚’ๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚ ย ย The invention of claim 11 is a method for driving an image display device, comprising: (A) preparing an image display device including a display unit having a plurality of pixel circuits; and (B) each pixel circuit. A first period having a first writing period in which a data signal is supplied and a first light emitting period in which the light emitting element in each pixel circuit emits light with luminance corresponding to the data signal is repeated in time sequence. A step of sequentially displaying a plurality of frame images on the display unit; and (C) based on a data signal supplied in the last frame period in the first writing period. The light emitting element has a second period in which light is emitted for a period equal to or longer than the first light emitting period, and has a length equal to or longer than the first period, and each light emitting element emits light in the display portion. The third period that is not performed is time-sequentially Ri returned to, characterized in that it comprises the steps of image is displayed in the display unit.

ใพใŸใ€่ซ‹ๆฑ‚้ …๏ผ‘๏ผ’ใฎ็™บๆ˜Žใฏใ€่ซ‹ๆฑ‚้ …๏ผ‘๏ผ‘ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€(D)ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€ๅ‰่จ˜(B)ใ‚นใƒ†ใƒƒใƒ—ใ‹ใ‚‰ๅ‰่จ˜(C)ใ‚นใƒ†ใƒƒใƒ—ใซ็งป่กŒใ•ใ›ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใ€
ใ‚’ๆ›ดใซๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹ใ€‚
The invention of claim 12 is the method for driving an image display device according to claim 11, wherein (D) the step of shifting from the step (B) to the step (C) at a predetermined timing,
Is further provided.

ๆœฌ็™บๆ˜Žใซใ‚ˆใ‚Œใฐใ€็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใจใ€ๅ„็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹ๆœŸ้–“ใจใ€ๅ„็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹ๆœŸ้–“ใจใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚Œใ€่กจ็คบ้ƒจใซใŠใ„ใฆ๏ผ‘ใคใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒ๏ผ‘ๅ›žไปฅไธŠ่กŒใ‚ใ‚Œใ‚‹่กจ็คบๆœŸ้–“ใจใ€็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใค่กจ็คบ้ƒจใซใŠใ„ใฆๅ„็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„้ž่กจ็คบๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใŸใ‚ใ€่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ๆœŸ้–“ใจ่กจ็คบใ•ใ‚Œใชใ„ๆœŸ้–“ใจใŒไบคไบ’ใซ่กŒใ‚ใ‚Œใ‚‹ใ“ใจใซใชใ‚Šใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย According to the present invention, when the second display mode is set, a period in which a data signal is supplied to each pixel circuit and a period in which the light emitting element in each pixel circuit emits light with a luminance according to the data signal. A display period in which a first frame image is displayed at least once in the display unit, and a length longer than the first period. Since the non-display period in which light emission is not performed is repeated in time sequence, the period in which the image is displayed and the period in which the image is not displayed are alternately performed on the display unit, while preventing a decrease in contrast of the display image. Thus, power consumption can be reduced.

ใพใŸใ€ๆœฌ็™บๆ˜Žใซใ‚ˆใ‚Œใฐใ€็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใจใ€ๅ„็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹ๆœŸ้–“ใจใ€็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ„ใฆ่กจ็คบ้ƒจใซ๏ผ‘ใคใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใงใ‚ใ‚Šใ€ไธ”ใคๅ„็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹ๆœŸ้–“ใจใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใค่กจ็คบ้ƒจใซใŠใ„ใฆๅ„็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใŸใ‚ใ€่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ๆœŸ้–“ใจ่กจ็คบใ•ใ‚Œใชใ„ๆœŸ้–“ใจใŒไบคไบ’ใซ่กŒใ‚ใ‚Œใ‚‹ใ“ใจใซใชใ‚Šใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ใชใŠใ€็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚ŒใŸ้š›ใ€ใƒ‡ใƒผใ‚ฟไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ๆœŸ้–“ใ‚’็œ็•ฅใ—ใ€ใใฎไปฃใ‚ใ‚Šใซใ€็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใฎ้š›ใซๆœ€ๅพŒใฎใƒ•ใƒฌใƒผใƒ ใงไพ›็ตฆใ•ใ‚ŒใŸใƒ‡ใƒผใ‚ฟไฟกๅทใซๅŸบใฅใ็ฌฌ๏ผ’ใฎๆœŸ้–“ใซใŠใ„ใฆ็™บๅ…‰็ด ๅญใ‚’็™บๅ…‰ใ•ใ›ใฆใ‚‚่‰ฏใ„ใ€‚ใ“ใฎๅ ดๅˆใ€ใƒ‡ใƒผใ‚ฟไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ๆœŸ้–“ใ‚’็œ็•ฅใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใƒกใƒชใƒƒใƒˆใŒใ‚ใ‚‹ใ€‚ใพใŸใ€็ฌฌ๏ผ’ใฎๆœŸ้–“ใฏใ€็ฌฌ๏ผ‘ใฎๆœŸ้–“ใ‚ˆใ‚Šใ‚‚ใƒ‡ใƒฅใƒผใƒ†ใ‚ฃใƒผใŒๅคงใใ„ใŸใ‚ใ€ๅŒใ˜ๅนณๅ‡่ผๅบฆ๏ผˆ๏ผ‘ใƒ•ใƒฌใƒผใƒ ใฎ่ผๅบฆใฎๆ™‚้–“ๅนณๅ‡๏ผ‰ใ‚’่กจ็คบใ™ใ‚‹ใŸใ‚ใฎ็žฌ้–“่ผๅบฆ๏ผˆๆ™‚้–“ๅฝ“ใŸใ‚Šใฎ็™บๅ…‰่ผๅบฆ๏ผ‰ใ‚’ๅฐใ•ใใงใใ‚‹ใ€‚ใชใŠใ€็™บๅ…‰็ด ๅญใŒๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญใงใ‚ใ‚‹ๅ ดๅˆใ€้›ปๆตๅฏ†ๅบฆใจ็žฌ้–“่ผๅบฆใŒๆฏ”ไพ‹้–ขไฟ‚ใซใ‚ใ‚Šใ€ใ‹ใค้›ปๆตๅฏ†ๅบฆใŒ้ซ˜ใ„ใปใฉ้›ปๅœงใŒ้ซ˜ใใชใ‚‹็‰นๆ€งใŒใ‚ใ‚‹ใ€‚ไธ€ๆ–นใ€็™บๅ…‰็ด ๅญใฎๅนณๅ‡่ผๅบฆใŒๅŒใ˜ใงใ‚ใ‚Œใฐใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ใฎๆœŸ้–“ใซ็™บๅ…‰็ด ๅญใซๆตใ‚Œใ‚‹้›ปๆต้‡ใŒใปใผ็ญ‰ใ—ใ„ใ€‚ใใ‚Œๆ•…ใ€็™บๅ…‰็ด ๅญใฎ็žฌ้–“่ผๅบฆใ‚’ๅฐใ•ใใ™ใ‚Œใฐใ€ๅฟ…่ฆใช้›ปๅœงใŒๅฐใ•ใใชใ‚Šใ€ๆถˆ่ฒป้›ปๅŠ›ใ‚’ใ‚ˆใ‚ŠไฝŽๆธ›ใ•ใ›ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย Further, according to the present invention, when the second display mode is set, a period during which a data signal is supplied to each pixel circuit, and one frame image is displayed on the display unit in the first display mode. A second period having a period equal to or longer than one period and a period during which the light emitting element in each pixel circuit emits light with a luminance corresponding to the data signal; and a length equal to or longer than the first period; Since the third period in which each light emitting element does not emit light is sequentially repeated in time, the period in which an image is displayed and the period in which no image is displayed are alternately performed on the display unit. It is possible to reduce power consumption while preventing a decrease in contrast. Note that the period for supplying the data signal is omitted when the second display mode is set, and instead, the second period is based on the data signal supplied in the last frame in the first display mode. The light emitting element may emit light. In this case, there is an advantage that the period for supplying the data signal can be omitted. In addition, since the duty is larger in the second period than in the first period, the instantaneous luminance (light emission luminance per time) for displaying the same average luminance (time average of luminance of one frame) can be reduced. Note that when the light emitting element is an organic EL element, the current density and the instantaneous luminance are in a proportional relationship, and the voltage increases as the current density increases. On the other hand, if the average luminance of the light emitting elements is the same, the amount of current flowing through the light emitting elements in one frame period is substantially equal. Therefore, if the instantaneous luminance of the light-emitting element is reduced, the required voltage is reduced and the power consumption can be further reduced.

ใพใŸใ€ๆœฌ็™บๆ˜Žใซใ‚ˆใ‚Œใฐใ€ใƒใƒƒใƒ†ใƒชใƒผใฎ่“„้›ป้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใจใชใฃใŸๅ ดๅˆใซใ€็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใ‚ˆใ†ใชๆง‹ๆˆใซใ‚ˆใ‚Šใ€ใƒใƒƒใƒ†ใƒชใƒผๅˆ‡ใ‚Œใซใ‚ˆใฃใฆ่ฃ…็ฝฎใŒไฝฟ็”จใงใใชใใชใ‚‹ใจใ„ใฃใŸไธๅ…ทๅˆใ‚’ๅ›ž้ฟใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย In addition, according to the present invention, when the stored amount of the battery becomes equal to or less than the predetermined amount, the configuration in which the second display mode is set avoids the problem that the device cannot be used due to running out of the battery. Can do.

ใพใŸใ€ๆœฌ็™บๆ˜Žใซใ‚ˆใ‚Œใฐใ€ๆ“ไฝœ้ƒจใฎๆ“ไฝœใซๅฟœใ˜ใฆใ€็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใ‚ˆใ†ใชๆง‹ๆˆใซใ‚ˆใ‚Šใ€ใƒฆใƒผใ‚ถใƒผใŒๅฟ…่ฆใซๅฟœใ˜ใฆๆถˆ่ฒป้›ปๅŠ›ใ‚’ไฝŽๆธ›ใ•ใ›ใ‚‹ใ“ใจใŒใงใใ‚‹ใŸใ‚ใ€ใƒใƒƒใƒ†ใƒชใƒผๅˆ‡ใ‚Œใซใ‚ˆใฃใฆ่ฃ…็ฝฎใŒไฝฟ็”จใงใใชใใชใ‚‹ใจใ„ใฃใŸไธๅ…ทๅˆใ‚’้ฉๅฎœๅ›ž้ฟใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย In addition, according to the present invention, since the user can reduce power consumption as necessary by the configuration in which the second display mode is set in accordance with the operation of the operation unit, the device can be used when the battery runs out. Can be avoided as appropriate.

ไปฅไธ‹ใ€ๆœฌ็™บๆ˜ŽใฎๅฎŸๆ–ฝๅฝขๆ…‹ใ‚’ๅ›ณ้ขใซๅŸบใฅใ„ใฆ่ชฌๆ˜Žใ™ใ‚‹ใ€‚ ย ย Hereinafter, embodiments of the present invention will be described with reference to the drawings.

๏ผœ็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹๏ผž
๏ผœ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎๆฆ‚็•ฅๆง‹ๆˆ๏ผž
ๅ›ณ๏ผ‘ใฏใ€ๆœฌ็™บๆ˜Žใฎ็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎๆฆ‚็•ฅๆง‹ๆˆใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚
<First Embodiment>
<Schematic configuration of image display device>
FIG. 1 is a diagram illustrating a schematic configuration of an image display apparatus according to the first embodiment of the present invention.

ๆบๅธฏ้›ป่ฉฑๆฉŸ๏ผ‘๏ผกใฏใ€ๆœฌไฝ“้ƒจ๏ผ‘๏ผ๏ผใจ่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใจใ‚’ๅ‚™ใˆใŸๆบๅธฏๅฏ่ƒฝใช้›ปๅญๆฉŸๅ™จใงใ‚ใ‚Šใ€ๅ‹•็”ปใ‚„้™ๆญข็”ปใชใฉใจใ„ใฃใŸๅ„็จฎ็”ปๅƒใ‚’่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใง่กจ็คบใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใจใ—ใฆๆฉŸ่ƒฝใ™ใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€ไปฅไธ‹ใงใฏใ€ๆบๅธฏ้›ป่ฉฑๆฉŸใ‚’้ฉๅฎœใ€Œ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€ใจใ‚‚็งฐใ™ใ‚‹ใ€‚ ย ย The mobile phone 1A is a portable electronic device that includes a main body 100 and a display unit 200A, and functions as an image display device that displays various images such as moving images and still images on the display unit 200A. For this reason, hereinafter, the mobile phone is also referred to as an โ€œimage display deviceโ€ as appropriate.

ๆœฌไฝ“้ƒจ๏ผ‘๏ผ๏ผใฏใ€้€šไฟกๆฉŸ่ƒฝใ‚„ใƒใƒƒใƒ†ใƒชใƒผใชใฉใฎ็ตฆ้›ปๆฉŸ่ƒฝใ‚„ๆ“ไฝœ้ƒจใชใฉใ‚’ๅ‚™ใˆใ‚‹ใ€‚ ย ย The main unit 100 includes a communication function, a power supply function such as a battery, an operation unit, and the like.

่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใฏใ€ไพ‹ใˆใฐใ€็•ฅ้•ทๆ–นๅฝขใฎ่ผช้ƒญใ‚’ๆœ‰ใ™ใ‚‹ๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚ค๏ผˆorganic electroluminescence display๏ผ‰ใจใ€ๆœฌไฝ“้ƒจ๏ผ‘๏ผ๏ผใ‚ˆใ‚Šไพ›็ตฆใ•ใ‚Œใ‚‹ๅ„็จฎไฟกๅทใŒๅ…ฅๅŠ›ใ•ใ‚Œใ‚‹ใƒ‰ใƒฉใ‚คใƒๆ‰‹ๆฎตใจใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚Œใ‚‹ใ€‚ๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใฏใ€ๆœ‰ๆฉŸๆๆ–™ใซ้›ปๆตใ‚’ๆตใ™ใ“ใจใงๆๆ–™่‡ชใ‚‰ใŒ็™บๅ…‰ใ™ใ‚‹่‡ช็™บๅ…‰ๅž‹ใฎ็™บๅ…‰็ด ๅญใ‚’ๆœ‰ใ™ใ‚‹่‡ช็™บๅ…‰ๅž‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใ‚‹ใ€‚ ย ย The display unit 200A includes, for example, an organic EL display (organic electroluminescence display) having a substantially rectangular outline and driver means to which various signals supplied from the main body unit 100 are input. An organic EL display is a self-luminous image display device having a self-luminous light-emitting element that emits light by flowing current through the organic material.

ใพใŸใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใฏใ€็™บๅ…‰่ผๅบฆใซๅฏพๅฟœใ™ใ‚‹ใƒ‡ใƒผใ‚ฟไฟกๅท๏ผˆ็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅท๏ผ‰ใ‚’ๅ„็”ป็ด ใซไพ›็ตฆใ™ใ‚‹ใŸใ‚ใฎ็”ปๅƒไฟกๅท็ทšใจใ€ๅฝ“่ฉฒ็”ปๅƒไฟกๅท็ทšใซๅฏพใ—ใฆ็•ฅ็›ดไบคใ™ใ‚‹ใ‚ˆใ†ใซ่จญใ‘ใ‚‰ใ‚Œใ€ๅ„็”ป็ด ใซ่ตฐๆŸปไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ใŸใ‚ใฎ่ตฐๆŸปไฟกๅท็ทšใจใ‚’ๆœ‰ใ™ใ‚‹ใ€‚ใชใŠใ€่ตฐๆŸปไฟกๅทใฏใ€ๅ„็”ป็ด ใซ็”ปๅƒไฟกๅท็ทšใ‚’ไป‹ใ—ใฆ็”ป็ด ไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใ‚’ๅˆถๅพกใ™ใ‚‹ไฟกๅทใงใ‚ใ‚‹ใ€‚ ย ย The organic EL display is provided with an image signal line for supplying a data signal (pixel data signal) corresponding to light emission luminance to each pixel, and substantially orthogonal to the image signal line. And a scanning signal line for supplying a scanning signal. Note that the scanning signal is a signal that controls the timing of supplying a pixel signal to each pixel via an image signal line.

ไธ€ๆ–นใ€ใƒ‰ใƒฉใ‚คใƒๆ‰‹ๆฎตใฏใ€็”ปๅƒไฟกๅท็ทšใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ€็”ป็ด ไฟกๅทใ‚’็”ปๅƒไฟกๅท็ทšใซไพ›็ตฆใ™ใ‚‹ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใ‚’ๅˆถๅพกใ™ใ‚‹๏ผธใƒ‰ใƒฉใ‚คใƒ๏ผˆ็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ‰ใจใ€่ตฐๆŸปไฟกๅท็ทšใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ€่ตฐๆŸปไฟกๅทใ‚’่ตฐๆŸปไฟกๅท็ทšใซไพ›็ตฆใ™ใ‚‹ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใ‚’ๅˆถๅพกใ™ใ‚‹๏ผนใƒ‰ใƒฉใ‚คใƒ๏ผˆ่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ‰ใจใ‚’ๅ‚™ใˆใ‚‹ใ€‚ไพ‹ใˆใฐใ€ๆบๅธฏ้›ป่ฉฑๆฉŸ๏ผ‘๏ผกใงใฏใ€๏ผธใƒ‰ใƒฉใ‚คใƒใฏๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใฎ็Ÿญ่พบใซๆฒฟใฃใฆ้…็ฝฎใ•ใ‚Œใ€๏ผนใƒ‰ใƒฉใ‚คใƒใฏๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใฎ้•ท่พบใซๆฒฟใฃใฆ้…็ฝฎใ•ใ‚Œใ‚‹ใ€‚ ย ย On the other hand, the driver means is electrically connected to the image signal line and is electrically connected to the scanning signal line and an X driver (image signal line driving circuit) for controlling the timing of supplying the pixel signal to the image signal line. And a Y driver (scanning signal line driving circuit) for controlling the timing of supplying the scanning signal to the scanning signal line. For example, in the mobile phone 1A, the X driver is disposed along the short side of the organic EL display, and the Y driver is disposed along the long side of the organic EL display.

๏ผœ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎๆฉŸ่ƒฝๆง‹ๆˆ๏ผž
ๅ›ณ๏ผ’ใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฎๆฉŸ่ƒฝๆง‹ๆˆใ‚’ไพ‹็คบใ™ใ‚‹ใƒ–ใƒญใƒƒใ‚ฏๅ›ณใงใ‚ใ‚‹ใ€‚
<Functional configuration of image display device>
FIG. 2 is a block diagram illustrating a functional configuration of the image display apparatus 1A.

ๆœฌไฝ“้ƒจ๏ผ‘๏ผ๏ผใฏใ€้€ๅ—ไฟก้ƒจ๏ผ‘๏ผ‘๏ผใ€ใƒใƒƒใƒ†ใƒชใƒผ๏ผ‘๏ผ’๏ผใ€ใŠใ‚ˆใณๆ“ไฝœ้ƒจ๏ผ‘๏ผ“๏ผใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚Œใ‚‹ใ€‚ ย ย The main body unit 100 includes a transmission / reception unit 110, a battery 120, and an operation unit 130.

้€ๅ—ไฟก้ƒจ๏ผ‘๏ผ‘๏ผใฏใ€็„ก็ทšๅ›ž็ทšใ‚’ไป‹ใ—ใฆ้Ÿณๅฃฐใƒ‡ใƒผใ‚ฟใ‚„็”ปๅƒใƒ‡ใƒผใ‚ฟใชใฉใจใ„ใฃใŸๅ„็จฎใƒ‡ใƒผใ‚ฟใ‚’ๅค–้ƒจ่ฃ…็ฝฎใจใฎ้–“ใง้€ๅ—ไฟกใ™ใ‚‹ใ‚‚ใฎใงใ‚ใ‚‹ใ€‚ ย ย The transmission / reception unit 110 transmits / receives various data such as audio data and image data to / from an external device via a wireless line.

ใƒใƒƒใƒ†ใƒชใƒผ๏ผ‘๏ผ’๏ผใฏใ€ๆœฌไฝ“้ƒจ๏ผ‘๏ผ๏ผใซๅฏพใ—ใฆ็€่„ฑ่‡ชๅœจใซๆง‹ๆˆใ•ใ‚Œใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฎๅ„้ƒจใซๅฏพใ—ใฆ้›ปๅŠ›ใ‚’ไพ›็ตฆใ™ใ‚‹ใ‚‚ใฎใงใ‚ใ‚‹ใ€‚ใƒใƒƒใƒ†ใƒชใƒผ๏ผ‘๏ผ’๏ผใจใ—ใฆใฏใ€ไพ‹ใˆใฐใ€ใƒชใƒใ‚ฆใƒ ใ‚คใ‚ชใƒณ้›ปๆฑ ใชใฉใจใ„ใฃใŸๅ……้›ปๅผใฎ่“„้›ปๆฑ ใชใฉใŒๆŒ™ใ’ใ‚‰ใ‚Œใ‚‹ใ€‚ ย ย The battery 120 is configured to be detachable from the main body unit 100 and supplies power to each unit of the image display device 1A. Examples of the battery 120 include a rechargeable storage battery such as a lithium ion battery.

ๆ“ไฝœ้ƒจ๏ผ‘๏ผ“๏ผใฏใ€ๆ•ฐๅญ—ใ‚„ๆ–‡ๅญ—ใ‚„้ธๆŠžๆŒ‡็คบใชใฉใ‚’็คบใ™ๅ„็จฎๆƒ…ๅ ฑใ‚’ๅ…ฅๅŠ›ใ™ใ‚‹ๆ“ไฝœใƒœใ‚ฟใƒณใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚Œใ‚‹ใ‚‚ใฎใงใ‚ใ‚‹ใ€‚ ย ย The operation unit 130 includes operation buttons for inputting various information indicating numbers, characters, selection instructions, and the like.

่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใฏใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใ€็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ’๏ผใ€่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ“๏ผใ€ใŠใ‚ˆใณ้›ปๆบๅ›ž่ทฏ๏ผ’๏ผ”๏ผใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚Œใ‚‹ใ€‚ ย ย The display unit 200A includes a control unit 210A, an image signal line driving circuit 220, a scanning signal line driving circuit 230, and a power supply circuit 240.

ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใฏใ€ไพ‹ใˆใฐใ€ๅ„็จฎๅ›ž่ทฏใ‚„๏ผฃ๏ผฐ๏ผตใ‚„๏ผฒ๏ผฏ๏ผญใ‚„๏ผฒ๏ผก๏ผญใชใฉใ‚’ๅ‚™ใˆใ€๏ผฒ๏ผฏ๏ผญใชใฉใซๆ ผ็ดใ•ใ‚ŒใŸใƒ—ใƒญใ‚ฐใƒฉใƒ ใ‚’๏ผฃ๏ผฐ๏ผตใŒๅฎŸ่กŒใ™ใ‚‹ใ“ใจใงใ€่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใฎๅ‹•ไฝœใซไฟ‚ใ‚‹ๅ„็จฎๆฉŸ่ƒฝใ‚„ๅˆถๅพกใ‚’ๅฎŸ็พใ™ใ‚‹ใ€‚ไพ‹ใˆใฐใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใฏใ€้€ๅ—ไฟก้ƒจ๏ผ‘๏ผ‘๏ผใ‹ใ‚‰้€ใ‚‰ใ‚Œใฆใใ‚‹็”ปๅƒใƒ‡ใƒผใ‚ฟ๏ผคใ‚’ๅ—ใ‘ไป˜ใ‘ใฆใ€ๅฝ“่ฉฒ็”ปๅƒใƒ‡ใƒผใ‚ฟ๏ผคใซๅŸบใฅใ็”ปๅƒใ‚’ใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใซใŠใ„ใฆ่กจ็คบใ™ใ‚‹ใ‚ˆใ†ใซๅˆถๅพกใ™ใ‚‹ใ€‚ ย ย The control unit 210A includes, for example, various circuits, a CPU, a ROM, a RAM, and the like, and realizes various functions and controls related to the operation of the display unit 200A when the CPU executes a program stored in the ROM or the like. For example, the control unit 210A receives the image data D sent from the transmission / reception unit 110, and controls to display an image based on the image data D on the display.

ใพใŸใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใฏใ€ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€่ค‡ๆ•ฐใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใฎใ†ใกใฎ๏ผ‘ใคใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใ‹ใ‚‰ไป–ใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซๅˆ‡ใ‚Šๆ›ฟใˆใ‚‹ใ€‚ใ“ใฎๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใจใ—ใฆใฏใ€ไพ‹ใˆใฐใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใŒใ€ใƒใƒƒใƒ†ใƒชใƒผ๏ผ‘๏ผ’๏ผใซใŠใ‘ใ‚‹่“„้›ป้‡ใฎๆฎ‹ใ‚Š๏ผˆใ„ใ‚ใ‚†ใ‚‹ใƒใƒƒใƒ†ใƒชใƒผใฎๆฎ‹้‡๏ผ‰ใ‚’้ฉๅฎœๅ‚็…งใ™ใ‚‹ใ“ใจใงใ€ใƒใƒƒใƒ†ใƒชใƒผๆฎ‹้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใงใ‚ใ‚‹ใ“ใจใ‚’ๆคœๅ‡บใ—ใŸใ‚ฟใ‚คใƒŸใƒณใ‚ฐใชใฉใŒๆŒ™ใ’ใ‚‰ใ‚Œใ‚‹ใ€‚ ย ย Further, the control unit 210A switches from one image display mode of the plurality of image display modes to another image display mode at a predetermined timing. As the predetermined timing, for example, the timing when the control unit 210A detects that the remaining battery level is equal to or less than the predetermined amount by appropriately referring to the remaining amount of power stored in the battery 120 (so-called remaining battery level). Is mentioned.

ใ‚ˆใ‚Š่ฉณ็ดฐใซใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฏใ€่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใซใŠใ„ใฆ้€šๅธธใฎ็”ปๅƒ่กจ็คบใ‚’่กŒใ†ใƒขใƒผใƒ‰๏ผˆ้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰๏ผ‰ใจๆถˆ่ฒป้›ปๅŠ›ใ‚’ไฝŽๆธ›ใ—ใคใค็”ปๅƒ่กจ็คบใ‚’่กŒใ†ใƒขใƒผใƒ‰๏ผˆไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰๏ผ‰ใจใซ่จญๅฎšๅฏ่ƒฝใจใชใฃใฆใ„ใ‚‹ใ€‚ใใ—ใฆใ€ไพ‹ใˆใฐใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใฎๅˆถๅพกใซใ‚ˆใ‚Šใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹็Šถๆ…‹ใงใ€ใƒใƒƒใƒ†ใƒชใƒผใฎๆฎ‹้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใจใชใ‚‹ใจใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใŒๅค‰ๆ›ดใ•ใ‚Œใ‚‹ใ€‚้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใจไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใคใ„ใฆใฏๆ›ดใซๅพŒ่ฟฐใ™ใ‚‹ใ€‚ ย ย More specifically, the image display device 1A includes a mode for performing normal image display (normal image display mode) on the display unit 200A and a mode for performing image display while reducing power consumption (low power consumption image display mode). It can be set. For example, under the control of the control unit 210A, when the remaining amount of the battery becomes a predetermined amount or less in the state where the normal image display mode is set, the setting is changed to the low power consumption image display mode. The normal image display mode and the low power consumption image display mode will be described later.

็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ’๏ผใฏใ€ใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใซ้…่จญใ•ใ‚ŒใŸ็”ปๅƒไฟกๅท็ทšใซๅฏพใ—ใฆ็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใ‚’ๅˆถๅพกใ™ใ‚‹ใ‚‚ใฎใงใ‚ใ‚‹ใ€‚ใพใŸใ€่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ“๏ผใฏใ€ใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใซ้…่จญใ•ใ‚ŒใŸ่ตฐๆŸปไฟกๅท็ทšใซๅฏพใ—ใฆ่ตฐๆŸปไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใ‚’ๅˆถๅพกใ™ใ‚‹ใ‚‚ใฎใงใ‚ใ‚‹ใ€‚็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ’๏ผใ€ใŠใ‚ˆใณ่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ“๏ผใฎๅ‹•ไฝœใฏใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใ‹ใ‚‰ใฎไฟกๅทใซใ‚ˆใฃใฆๅˆถๅพกใ•ใ‚Œใ‚‹ใ€‚ ย ย The image signal line drive circuit 220 controls the timing for supplying pixel data signals to the image signal lines provided on the display. The scanning signal line driving circuit 230 controls the timing for supplying the scanning signal to the scanning signal lines provided in the display. The operations of the image signal line driving circuit 220 and the scanning signal line driving circuit 230 are controlled by signals from the control unit 210A.

้›ปๆบๅ›ž่ทฏ๏ผ’๏ผ”๏ผใฏใ€ใƒใƒƒใƒ†ใƒชใƒผ๏ผ‘๏ผ’๏ผใ‹ใ‚‰ไพ›็ตฆใ•ใ‚Œใ‚‹้›ปๅŠ›ใ‚’ใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใ‹ใ‚‰ใฎๅˆถๅพกใซๅŸบใฅใ„ใฆใ€ใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใฎๅ„็”ป็ด ใซๅฏพใ—ใฆไพ›็ตฆใ™ใ‚‹ใ‚‚ใฎใงใ‚ใ‚‹ใ€‚้›ปๆบๅ›ž่ทฏ๏ผ’๏ผ”๏ผใ‹ใ‚‰ๅ„็”ป็ด ใซๅฏพใ™ใ‚‹้›ปๅŠ›ใฎไพ›็ตฆใฏใ€็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใ”ใจใซๅค‰ๆ›ดใ•ใ‚Œใ‚‹ใ€‚ ย ย The power supply circuit 240 supplies power supplied from the battery 120 to each pixel of the display based on control from the control unit 210A. The power supply from the power supply circuit 240 to each pixel is changed for each image display mode.

๏ผœ่กจ็คบ้ƒจใฎๆฆ‚็•ฅๆง‹ๆˆ๏ผž
ๅ›ณ๏ผ“ใฏใ€่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใฎๆฉŸ่ƒฝๆง‹ๆˆใฎๆฆ‚็•ฅใ‚’็คบใ™ใƒ–ใƒญใƒƒใ‚ฏๅ›ณใงใ‚ใ‚‹ใ€‚ใชใŠใ€ๅ›ณ๏ผ“ใงใฏใ€ๆ–นไฝ้–ขไฟ‚ใ‚’ๆ˜Ž็ขบๅŒ–ใ™ใ‚‹ใŸใ‚ใซ็›ดไบคใ™ใ‚‹๏ผธ๏ผนใฎ๏ผ’่ปธใŒไป˜ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
<Schematic configuration of display unit>
FIG. 3 is a block diagram illustrating an outline of a functional configuration of the display unit 200A. In FIG. 3, two orthogonal XY axes are attached in order to clarify the orientation relationship.

่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚ค๏ผก๏ผกใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใ€็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ’๏ผใ€่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ“๏ผใ€ใŠใ‚ˆใณ้›ปๆบๅ›ž่ทฏ๏ผ’๏ผ”๏ผใ‚’ๅ‚™ใˆใ‚‹ใ€‚ใใ—ใฆใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใซใฏใ€ใ‚ฟใ‚คใƒŸใƒณใ‚ฐ็™บ็”Ÿๅ›ž่ทฏ๏ผด๏ผฃใŒๅซใพใ‚Œใ‚‹ใ€‚ ย ย The display unit 200A includes an organic EL display AA, a control unit 210A, an image signal line driving circuit 220, a scanning signal line driving circuit 230, and a power supply circuit 240. Control unit 210A includes a timing generation circuit TC.

ๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚ค๏ผก๏ผกใซใฏใ€ๅคšๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใŒ็ธฆๆ–นๅ‘๏ผˆ๏ผนๆ–นๅ‘๏ผ‰ใชใ‚‰ใณใซๆจชๆ–นๅ‘๏ผˆ๏ผธๆ–นๅ‘๏ผ‰ใซๆฒฟใฃใฆใƒžใƒˆใƒชใƒƒใ‚ฏใ‚น็Šถ๏ผˆใ™ใชใ‚ใกๆ ผๅญ็Šถ๏ผ‰ใซ้…ๅˆ—ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ใใ—ใฆใ€๏ผนๆ–นๅ‘ใซๅนณ่กŒใช็”ป็ด ๅ›ž่ทฏ๏ผ—ใฎๅˆ—ใ”ใจใซ็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใŒใใ‚Œใžใ‚Œ่จญใ‘ใ‚‰ใ‚Œใ€ๅ„็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใŒ่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๅ…ฑ้€šใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ใพใŸใ€๏ผธๆ–นๅ‘ใซๅนณ่กŒใช็”ป็ด ๅ›ž่ทฏ๏ผ—ใฎ่กŒใ”ใจใซใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใŒใใ‚Œใžใ‚Œ่จญใ‘ใ‚‰ใ‚Œใ€ๅ„่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใŒ่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๅ…ฑ้€šใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ใพใŸใ€็”ป็ด ๅ›ž่ทฏ๏ผ—ใฏใ€่ค‡ๆ•ฐใฎ็”ป็ด ใŒ้…ๅˆ—ใ•ใ‚ŒใŸ่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใฎ่ผๅบฆใ‚’็”ป็ด ใ”ใจใซๅˆถๅพกใ™ใ‚‹ใ‚‚ใฎใงใ‚ใ‚‹ใ€‚ ย ย In the organic EL display AA, a large number of pixel circuits 7 are arranged in a matrix (that is, a lattice) along the vertical direction (Y direction) and the horizontal direction (X direction). An image signal line Lis is provided for each column of pixel circuits 7 parallel to the Y direction, and each image signal line Lis is electrically connected to a plurality of pixel circuits 7 in common. A scanning signal line Lss is provided for each row of the pixel circuits 7 parallel to the X direction, and each scanning signal line Lss is electrically connected to the plurality of pixel circuits 7 in common. The pixel circuit 7 controls the luminance of the display unit 200A in which a plurality of pixels are arranged for each pixel.

ใ‚ฟใ‚คใƒŸใƒณใ‚ฐ็™บ็”Ÿๅ›ž่ทฏ๏ผด๏ผฃใฏใ€ๆœฌไฝ“้ƒจ๏ผ‘๏ผ๏ผใ‹ใ‚‰้€ใ‚‰ใ‚Œใฆใใ‚‹็”ปๅƒใƒ‡ใƒผใ‚ฟ๏ผคใซๅŒๆœŸใ•ใ›ใฆใ€็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ’๏ผใ‹ใ‚‰ๅ„็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฏพใ™ใ‚‹็”ป็ด ไฟกๅทใฎไพ›็ตฆใ‚ฟใ‚คใƒŸใƒณใ‚ฐใ‚’ๅˆถๅพกใ™ใ‚‹ไฟกๅทใ‚’็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ’๏ผใซๅฏพใ—ใฆ้€ๅ‡บใ™ใ‚‹ไธ€ๆ–นใ€่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ“๏ผใ‹ใ‚‰ๅ„่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซๅฏพใ™ใ‚‹่ตฐๆŸปไฟกๅทใฎไพ›็ตฆใ‚ฟใ‚คใƒŸใƒณใ‚ฐใ‚’ๅˆถๅพกใ™ใ‚‹ไฟกๅทใ‚’่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ“๏ผใซๅฏพใ—ใฆ้€ๅ‡บใ™ใ‚‹ใ€‚ ย ย The timing generation circuit TC synchronizes with the image data D sent from the main body 100, and outputs a signal for controlling the supply timing of the pixel signal from the image signal line drive circuit 220 to each image signal line Lis. On the other hand, a signal for controlling the supply timing of the scanning signal to each scanning signal line Lss is sent from the scanning signal line driving circuit 230 to the scanning signal line driving circuit 230.

็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ’๏ผใฏใ€ใ‚ฟใ‚คใƒŸใƒณใ‚ฐ็™บ็”Ÿๅ›ž่ทฏ๏ผด๏ผฃใ‹ใ‚‰ใฎไฟกๅทใซๅฟœ็ญ”ใ—ใฆใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฏพใ—ใฆ็”ป็ด ไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ใ€‚ไธ€ๆ–นใ€่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ๏ผ’๏ผ“๏ผใฏใ€ใ‚ฟใ‚คใƒŸใƒณใ‚ฐ็™บ็”Ÿๅ›ž่ทฏ๏ผด๏ผฃใ‹ใ‚‰ใฎไฟกๅทใซๅฟœ็ญ”ใ—ใฆใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซๅฏพใ—ใฆ่ตฐๆŸปไฟกๅทใ‚’ไพ›็ตฆใ™ใ‚‹ใ€‚ใ“ใฎใ‚ˆใ†ใชใ‚ฟใ‚คใƒŸใƒณใ‚ฐ็™บ็”Ÿๅ›ž่ทฏ๏ผด๏ผฃใฎๅˆถๅพกใซใ‚ˆใ‚Šใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใ‚’ไป‹ใ—ใฆๅ„็”ป็ด ๅ›ž่ทฏ๏ผ—ใซ็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใŒ้ฉๅฎœไพ›็ตฆใ•ใ‚Œใ‚‹ใ€‚ ย ย The image signal line driving circuit 220 supplies a pixel signal to the image signal line Lis in response to a signal from the timing generation circuit TC. On the other hand, the scanning signal line driving circuit 230 supplies a scanning signal to the scanning signal line Lss in response to a signal from the timing generation circuit TC. By such control of the timing generation circuit TC, a pixel data signal is appropriately supplied to each pixel circuit 7 via the image signal line Lis.

้›ปๆบๅ›ž่ทฏ๏ผ’๏ผ”๏ผใฏใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใฎๅˆถๅพกไธ‹ใงใ€ๅ„็”ป็ด ๅ›ž่ทฏ๏ผ—ใซๅฏพใ—ใฆ็™บๅ…‰ใชใฉใซ่ฆใ™ใ‚‹้›ปๅŠ›ใ‚’ไพ›็ตฆใ™ใ‚‹ใ€‚ ย ย The power supply circuit 240 supplies power required for light emission to each pixel circuit 7 under the control of the control unit 210A.

๏ผœ็”ป็ด ๅ›ž่ทฏใฎๆง‹ๆˆ๏ผž
ๅ›ณ๏ผ”ใฏใ€๏ผ‘็”ป็ด ๅˆ†ใฎ็”ป็ด ๅ›ž่ทฏ๏ผˆ้ง†ๅ‹•ๅ›ž่ทฏ๏ผ‰๏ผ—ใฎๆง‹ๆˆไพ‹ใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚
<Configuration of pixel circuit>
FIG. 4 is a diagram illustrating a configuration example of a pixel circuit (drive circuit) 7 for one pixel.

็”ป็ด ๅ›ž่ทฏ๏ผ—ใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผˆ๏ผฏ๏ผฌ๏ผฅ๏ผค๏ผ‰๏ผ‘ใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใ€้–พๅ€ค๏ผˆ๏ผถ๏ฝ”๏ฝˆ๏ผ‰่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใ€ใŠใ‚ˆใณใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใ‚’ๅ‚™ใˆใ‚‹ใ€‚ ย ย The pixel circuit 7 includes an organic EL element (OLED) 1, a drive transistor 2, a threshold (Vth) compensation transistor 3, and a capacitor 4.

ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฏใ€ๆœ‰ๆฉŸ็‰ฉใชใฉใงๆง‹ๆˆใ•ใ‚Œใ€็™บๅ…‰ๅฑคใ‚’ๆตใ‚Œใ‚‹้›ปๆตใฎ้‡๏ผˆ้›ปๆต้‡๏ผ‰ใซใ‚ˆใฃใฆ็™บๅ…‰่ผๅบฆใŒๅค‰ๅŒ–ใ™ใ‚‹็™บๅ…‰็ด ๅญใงใ‚ใ‚‹ใ€‚ใ“ใฎๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฏใ€ใ‚ขใƒŽใƒผใƒ‰้›ปๆฅต๏ผ‘๏ฝใจใ‚ซใ‚ฝใƒผใƒ‰้›ปๆฅต๏ผ‘๏ฝ‚ใจใ‚’ๆœ‰ใ—ใฆใŠใ‚Šใ€ใ‚ขใƒŽใƒผใƒ‰้›ปๆฅต๏ผ‘๏ฝใฏใ€็ตฆ้›ป็ทšใฎใ†ใกใงๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ๆ™‚ใซ้ซ˜้›ปไฝๅดใจใชใ‚‹้›ปๆบ็ทšใจใ—ใฆใฎ๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ไธ€ๆ–นใ€ใ‚ซใ‚ฝใƒผใƒ‰้›ปๆฅต๏ผ‘๏ฝ‚ใฏใ€็ตฆ้›ป็ทšใฎใ†ใกใงๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ๆ™‚ใซไฝŽ้›ปไฝๅดใจใชใ‚‹้›ปๆบ็ทšใจใ—ใฆใฎ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๅฏพใ—ใฆ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใ‚’ไป‹ใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ ย ย The organic EL element 1 is a light-emitting element that is made of an organic material and the like, and whose emission luminance varies depending on the amount of current (current amount) flowing through the light-emitting layer. The organic EL element 1 has an anode electrode 1a and a cathode electrode 1b. The anode electrode 1a is a VDD line Lvd as a power supply line that is on the high potential side when the organic EL element 1 emits light among the power supply lines. Is electrically connected. On the other hand, the cathode electrode 1b is electrically connected via the drive transistor 2 to a VSS line Lvs as a power supply line that is on the low potential side when the organic EL element 1 emits light in the power supply line.

้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซ็›ดๅˆ—ใซๆŽฅ็ถšใ•ใ‚Œใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซใŠใ‘ใ‚‹้›ปๆต้‡ใ‚’่ชฟๆ•ดใ™ใ‚‹ใ“ใจใงๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰่ผๅบฆใ‚’ๅˆถๅพกใ™ใ‚‹ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟใงใ‚ใ‚‹ใ€‚ใ“ใ“ใงใฏใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฏใ€ใ‚ญใƒฃใƒชใ‚ขใŒ้›ปๅญใงใ‚ใ‚‹ใ‚ฟใ‚คใƒ—๏ผˆ๏ฝŽๅž‹๏ผ‰ใฎ๏ผญ๏ผฉ๏ผณ(Metal Insulator Semiconductor๏ผ‰ๆง‹้€ ใ‚’ๆŽก็”จใ—ใŸ้›ป็•ŒๅŠนๆžœใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผˆFET:Field Effect Transistor๏ผ‰ใฎไธ€็จฎใงใ‚ใ‚‹่–„่†œใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผˆTFT๏ผšThin Film Transistor๏ผ‰ใ€ใ™ใชใ‚ใก๏ฝŽโˆ’๏ผญ๏ผฉ๏ผณ๏ผฆ๏ผฅ๏ผด๏ผด๏ผฆ๏ผดใซใ‚ˆใฃใฆๆง‹ๆˆใ•ใ‚Œใ‚‹ใ€‚ ย ย The drive transistor 2 is a transistor that is electrically connected in series to the organic EL element 1 and controls the light emission luminance of the organic EL element 1 by adjusting the amount of current in the organic EL element 1. Here, the drive transistor 2 is a thin film transistor (TFT: Thin Film Transistor) which is a type of field effect transistor (FET) that employs a type (n-type) MIS (Metal Insulator Semiconductor) structure in which carriers are electrons. ), I.e., an n-MISFET TFT.

ใ“ใฎ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฏใ€็ฌฌ๏ผ‘ใ‹ใ‚‰็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ„๏ฝ“๏ผŒ๏ผ’๏ฝ“๏ฝ„๏ผŒ๏ผ’๏ฝ‡ใ‚’ๆœ‰ใ—ใฆใ„ใ‚‹ใ€‚็ฌฌ๏ผ‘้›ปๆฅต๏ผ’๏ฝ„๏ฝ“ใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎใ‚ซใ‚ฝใƒผใƒ‰้›ปๆฅต๏ผ‘๏ฝ‚ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒ็™บๅ…‰ใ™ใ‚‹้š›ใ€ใ™ใชใ‚ใกๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซๅฏพใ—ใฆ้ †ๆ–นๅ‘ใฎ้›ปๆตใŒๆตใ‚Œใ‚‹้š›ใซใƒ‰ใƒฌใ‚คใƒณ้›ปๆฅต๏ผˆไปฅไธ‹ใ€Œใƒ‰ใƒฌใ‚คใƒณใ€ใจ็•ฅ็งฐใ™ใ‚‹๏ผ‰ใจใชใ‚‹ใ€‚ไธ€ๆ–นใ€้€†ๆ–นๅ‘ใซ้›ปๆตใŒๆตใ‚Œใ‚‹้š›ใซใฏใ€้€†ใซใ‚ฝใƒผใ‚น้›ปๆฅต๏ผˆไปฅไธ‹ใ€Œใ‚ฝใƒผใ‚นใ€ใจ็•ฅ็งฐใ™ใ‚‹๏ผ‰ใจใชใ‚‹ใ€‚ใพใŸใ€็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ“๏ฝ„ใฏใ€๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซๅฏพใ—ใฆ้ †ๆ–นๅ‘ใฎ้›ปๆตใŒๆตใ‚Œใ‚‹้š›ใซใ‚ฝใƒผใ‚น้›ปๆฅต๏ผˆใ‚ฝใƒผใ‚น๏ผ‰ใจใชใ‚‹ใ€‚ไธ€ๆ–นใ€้€†ๆ–นๅ‘ใซ้›ปๆตใŒๆตใ‚Œใ‚‹้š›ใซใฏใ€้€†ใซใƒ‰ใƒฌใ‚คใƒณ้›ปๆฅต๏ผˆใƒ‰ใƒฌใ‚คใƒณ๏ผ‰ใจใชใ‚‹ใ€‚ๆ›ดใซใ€็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใฏใ€ใ„ใ‚ใ‚†ใ‚‹ใ‚ฒใƒผใƒˆ้›ปๆฅต๏ผˆไปฅไธ‹ใ€Œใ‚ฒใƒผใƒˆใ€ใจ็•ฅ็งฐใ™ใ‚‹๏ผ‰ใงใ‚ใ‚Šใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใฎไธ€ๆ–นใฎ้›ปๆฅตใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ ย ย The drive transistor 2 has first to third electrodes 2ds, 2sd, and 2g. The first electrode 2ds is electrically connected to the cathode electrode 1b of the organic EL element 1, and when the organic EL element 1 emits light, that is, when a forward current flows through the organic EL element 1, the drain electrode (Hereinafter abbreviated as โ€œdrainโ€). On the other hand, when a current flows in the reverse direction, it becomes a source electrode (hereinafter abbreviated as โ€œsourceโ€). The second electrode 2sd is electrically connected to the VSS line Lvs, and becomes a source electrode (source) when a forward current flows through the organic EL element 1. On the other hand, when a current flows in the reverse direction, it becomes the drain electrode (drain). Further, the third electrode 2 g is a so-called gate electrode (hereinafter abbreviated as โ€œgateโ€), and is electrically connected to one electrode of the capacitor 4.

ใพใŸใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใงใฏใ€็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปไฝใ€ใ‚ˆใ‚Š่ฉณ็ดฐใซใฏ็ฌฌ๏ผ‘้›ปๆฅต๏ผ’๏ฝ„๏ฝ“ใพใŸใฏ็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ“๏ฝ„ใจ็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใจใฎ้–“๏ผˆใ™ใชใ‚ใกใ‚ฒใƒผใƒˆใจใ‚ฝใƒผใ‚นใจใฎ้–“๏ผ‰ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปๅœงๅ€คใŒ่ชฟๆ•ดใ•ใ‚Œใ‚‹ใ“ใจใงใ€็ฌฌ๏ผ‘้›ปๆฅต๏ผ’๏ฝ„๏ฝ“ใจ็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ“๏ฝ„ใจใฎ้–“๏ผˆไปฅไธ‹ใ€Œ็ฌฌ๏ผ‘โˆ’๏ผ’้›ปๆฅต้–“ใ€ใจใ‚‚็งฐใ™ใ‚‹๏ผ‰ใซใŠใ„ใฆๆตใ‚Œใ‚‹้›ปๆตใฎ้‡๏ผˆ้›ปๆต้‡๏ผ‰ใŒ่ชฟๆ•ดใ•ใ‚Œใ‚‹ใ€‚ใใ—ใฆใ€ใ“ใฎ็ฌฌ๏ผ“้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ’๏ฝ‡ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปไฝใซใ‚ˆใ‚Šใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฏใ€็ฌฌ๏ผ‘โˆ’๏ผ’้›ปๆฅต้–“๏ผˆใ™ใชใ‚ใกใƒ‰ใƒฌใ‚คใƒณใจใ‚ฝใƒผใ‚นใจใฎ้–“๏ผ‰ใซใŠใ„ใฆ้›ปๆตใŒๆตใ‚Œๅพ—ใ‚‹็Šถๆ…‹๏ผˆๅฐŽ้€š็Šถๆ…‹๏ผ‰ใจใ€้›ปๆตใŒๆตใ‚Œๅพ—ใชใ„็Šถๆ…‹๏ผˆ้žๅฐŽ้€š็Šถๆ…‹๏ผ‰ใจใซ้ธๆŠž็š„ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใ€‚ ย ย In the driving transistor 2, a potential applied to the third electrode 2g, more specifically, applied between the first electrode 2ds or the second electrode 2sd and the third electrode 2g (that is, between the gate and the source). By adjusting the voltage value, the amount of current (current amount) flowing between the first electrode 2ds and the second electrode 2sd (hereinafter also referred to as โ€œbetween the first and second electrodesโ€) is adjusted. Then, the potential applied to the third electrode (gate) 2g causes the drive transistor 2 to have a state in which a current can flow between the first and second electrodes (that is, between the drain and the source) (conducting state), Is selectively set to a state in which the current cannot flow (non-conducting state).

๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฏใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใŒ้€š้›ป็Šถๆ…‹ใจใชใ‚‹ๅ ดๅˆใฎใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ“๏ฝ„ใซๅฏพใ™ใ‚‹็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใฎ้›ปไฝ๏ผˆ๏ผถ๏ฝ‡๏ฝ“๏ผ‰ใฎไธ‹้™ๅ€ค๏ผˆๆ‰€ๅฎšใฎ้–พๅ€ค้›ปๅœง๏ผถ๏ฝ”๏ฝˆ๏ผ‰ใ‚’ๆคœๅ‡บใ™ใ‚‹ใจใจใ‚‚ใซใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ๏ผถ๏ฝ‡๏ฝ“ใ‚’ใ€้–พๅ€ค้›ปๅœง๏ผถ๏ฝ”๏ฝˆ๏ผˆไปฅไธ‹ใ€Œ้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใ€ใจ็•ฅ็งฐใ™ใ‚‹๏ผ‰ใซ่ชฟๆ•ดใ™ใ‚‹ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟใงใ‚ใ‚‹ใ€‚ใชใŠใ€ใ“ใ“ใงใฏใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใ‚‚ใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใจๅŒๆง˜ใซ๏ฝŽโˆ’๏ผญ๏ผฉ๏ผณ๏ผฆ๏ผฅ๏ผด๏ผด๏ผฆ๏ผดใซใ‚ˆใฃใฆๆง‹ๆˆใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย The Vth compensation transistor 3 detects the lower limit (predetermined threshold voltage Vth) of the potential (Vgs) of the third electrode 2g with respect to the second electrode 2sd of the drive transistor 2 when the drive transistor 2 is energized. , A transistor that adjusts Vgs of the drive transistor 2 to a threshold voltage Vth (hereinafter abbreviated as โ€œthreshold Vthโ€). Here, the Vth compensation transistor 3 is also composed of an n-MISFET TFT in the same manner as the drive transistor 2.

ใ“ใฎ๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฏใ€็ฌฌ๏ผ”ใ‹ใ‚‰็ฌฌ๏ผ–้›ปๆฅต๏ผ“๏ฝ„๏ฝ“๏ผŒ๏ผ“๏ฝ“๏ฝ„๏ผŒ๏ผ“๏ฝ‡ใ‚’ๆœ‰ใ—ใฆใ„ใ‚‹ใ€‚็ฌฌ๏ผ”้›ปๆฅต๏ผ“๏ฝ„๏ฝ“ใฏใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘้›ปๆฅต๏ผ’๏ฝ„๏ฝ“ใจๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎใ‚ซใ‚ฝใƒผใƒ‰้›ปๆฅต๏ผ‘๏ฝ‚ใจใ‚’้›ปๆฐ—็š„ใซๆŽฅ็ถšใ™ใ‚‹้…็ทšใซๅฏพใ—ใฆๅฐŽ้›ปๅฏ่ƒฝใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ใ™ใชใ‚ใกใ€็ฌฌ๏ผ”้›ปๆฅต๏ผ“๏ฝ„๏ฝ“ใฏใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘้›ปๆฅต๏ผ’๏ฝ„๏ฝ“ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ใพใŸใ€็ฌฌ๏ผ•้›ปๆฅต๏ผ“๏ฝ“๏ฝ„ใฏใ€ๆŽฅ็ถš็‚น๏ผด๏ผ‘ใซใŠใ„ใฆ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ“้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ’๏ฝ‡ใจใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใจใ‚’้›ปๆฐ—็š„ใซๆŽฅ็ถšใ™ใ‚‹้…็ทšใซๅฏพใ—ใฆๅฐŽ้›ปๅฏ่ƒฝใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ใ™ใชใ‚ใกใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎใ‚ฒใƒผใƒˆ๏ผ’๏ฝ‡ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ๆ›ดใซใ€็ฌฌ๏ผ–้›ปๆฅต๏ผ“๏ฝ‡ใฏใ€ใ„ใ‚ใ‚†ใ‚‹ใ‚ฒใƒผใƒˆ้›ปๆฅตใงใ‚ใ‚Šใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹ใ€‚ ย ย The Vth compensation transistor 3 includes fourth to sixth electrodes 3ds, 3sd, and 3g. The fourth electrode 3ds is conductively connected to a wiring that electrically connects the first electrode 2ds of the drive transistor 2 and the cathode electrode 1b of the organic EL element 1. That is, the fourth electrode 3ds is electrically connected to the first electrode 2ds of the drive transistor 2. Further, the fifth electrode 3sd is conductively connected to a wiring electrically connecting the third electrode (gate) 2g of the driving transistor 2 and the capacitor 4 at the connection point T1. That is, it is electrically connected to the gate 2g of the driving transistor 2. Further, the sixth electrode 3g is a so-called gate electrode and is electrically connected to the scanning signal line Lss.

ใพใŸใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใงใฏใ€็ฌฌ๏ผ–้›ปๆฅต๏ผ“๏ฝ‡ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปไฝใ€ใ‚ˆใ‚Šๅ…ทไฝ“็š„ใซใฏ็ฌฌ๏ผ”้›ปๆฅต๏ผ“๏ฝ„๏ฝ“ใพใŸใฏ็ฌฌ๏ผ•้›ปๆฅต๏ผ“๏ฝ“๏ฝ„ใจ็ฌฌ๏ผ–้›ปๆฅต๏ผ“๏ฝ‡ใจใฎ้–“๏ผˆใ™ใชใ‚ใกใ‚ฒใƒผใƒˆใจใ‚ฝใƒผใ‚นใจใฎ้–“๏ผ‰ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปๅœงๅ€คใŒ่ชฟๆ•ดใ•ใ‚Œใ‚‹ใ“ใจใงใ€็ฌฌ๏ผ”้›ปๆฅต๏ผ“๏ฝ„๏ฝ“ใจ็ฌฌ๏ผ•้›ปๆฅต๏ผ“๏ฝ“๏ฝ„ใจใฎ้–“๏ผˆไปฅไธ‹ใ€Œ็ฌฌ๏ผ”โˆ’๏ผ•้›ปๆฅต้–“ใ€ใจใ‚‚็งฐใ™ใ‚‹๏ผ‰ใซใŠใ„ใฆๆตใ‚Œใ‚‹้›ปๆตใฎ้‡๏ผˆ้›ปๆต้‡๏ผ‰ใŒ่ชฟๆ•ดใ•ใ‚Œใ‚‹ใ€‚ใใ—ใฆใ€ใ“ใฎ็ฌฌ๏ผ–้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ“๏ฝ‡ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปไฝใซใ‚ˆใ‚Šใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฏใ€็ฌฌ๏ผ”โˆ’๏ผ•้›ปๆฅต้–“๏ผˆใƒ‰ใƒฌใ‚คใƒณใจใ‚ฝใƒผใ‚นใจใฎ้–“๏ผ‰ใซใŠใ„ใฆ้›ปๆตใŒๆตใ‚Œๅพ—ใ‚‹็Šถๆ…‹๏ผˆๅฐŽ้€š็Šถๆ…‹๏ผ‰ใจใ€้›ปๆตใŒๆตใ‚Œๅพ—ใชใ„็Šถๆ…‹๏ผˆ้žๅฐŽ้€š็Šถๆ…‹๏ผ‰ใจใซ้ธๆŠž็š„ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใ€‚ ย ย In the Vth compensation transistor 3, the potential applied to the sixth electrode 3g, more specifically, between the fourth electrode 3ds or the fifth electrode 3sd and the sixth electrode 3g (that is, between the gate and the source). The amount of current (current amount) flowing between the fourth electrode 3ds and the fifth electrode 3sd (hereinafter also referred to as โ€œbetween the fourth and fifth electrodesโ€) is adjusted by adjusting the voltage value applied to The Then, the potential applied to the sixth electrode (gate) 3g causes the Vth compensation transistor 3 to have a state in which a current can flow between the fourth and fifth electrodes (between the drain and the source) (conduction state), It is selectively set to a state where current cannot flow (non-conducting state).

ใ“ใ“ใงใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฏใ€้›ปๆตๅ€คใซใ‚ˆใฃใฆ็™บๅ…‰่ผๅบฆใŒๅˆถๅพกใ•ใ‚Œใ‚‹ใŸใ‚ใ€็™บๅ…‰ๆ™‚ใซใŠใ‘ใ‚‹้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ๏ผถ๏ฝ‡๏ฝ“ใฎใ‚†ใ‚‰ใŽใซๅฏพใ—ใฆใ€็™บๅ…‰่ผๅบฆใŒๆ•ๆ„Ÿใซๅค‰ๅ‹•ใ™ใ‚‹ใ€‚็‰นใซใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใŒใ‚ขใƒขใƒซใƒ•ใ‚กใ‚นใ‚ทใƒชใ‚ณใƒณใ‚’็”จใ„ใฆๆง‹ๆˆใ•ใ‚ŒใŸๅ ดๅˆใซใฏใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใ”ใจใซ้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใŒ็•ฐใชใ‚‹ๅ‚พๅ‘ใซใ‚ใ‚‹ใ€‚ใ‚ˆใฃใฆใ€็”ป็ด ๆฏŽใซ็•ฐใชใ‚‹้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใ‚’่ฃœๅ„Ÿใ™ใ‚‹ๆฉŸ่ƒฝ๏ผˆ๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„ŸๆฉŸ่ƒฝ๏ผ‰ใ‚’ๆŒใŸใ›ใชใ„ใจใ€ๆ‰€ๆœ›ใฎ็™บๅ…‰่ผๅบฆใจๅฎŸ้š›ใฎ็™บๅ…‰่ผๅบฆใจใฎ้–“ใซ่‹ฅๅนฒใฎไน–้›ขใŒ็”Ÿใ˜ใ€็ตๆžœใจใ—ใฆ็”ป็ด ้–“ใง็™บๅ…‰่ผๅบฆใฎใƒ ใƒฉใŒ็”Ÿใ˜ใฆใ—ใพใ†ใ€‚ ย ย Here, since the light emission luminance of the organic EL element 1 is controlled by the current value, the light emission luminance fluctuates sensitively to fluctuations in Vgs of the drive transistor 2 during light emission. In particular, when the driving transistor 2 is configured using amorphous silicon, the threshold Vth tends to be different for each driving transistor 2. Therefore, if a function for compensating a different threshold Vth for each pixel (Vth compensation function) is not provided, there is a slight difference between the desired light emission luminance and the actual light emission luminance. Unevenness occurs.

ใใ“ใงใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฏใ€็™บๅ…‰ๅ‰ใซใŠใ„ใฆๅ„็”ป็ด ใซ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ๏ผถ๏ฝ‡๏ฝ“ใ‚’้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใซๅˆใ‚ใ›ใ‚‹ใ“ใจใงใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซใŠใ‘ใ‚‹้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใฎใฐใ‚‰ใคใใ‚’่ฃœๅ„Ÿใ™ใ‚‹๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„ŸๆฉŸ่ƒฝใ‚’ๅฎŸ็พใ™ใ‚‹ใŸใ‚ใซ่จญใ‘ใ‚‰ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย Therefore, the Vth compensation transistor 3 is provided to realize a Vth compensation function that compensates for variations in the threshold Vth in the drive transistor 2 by matching Vgs of the drive transistor 2 to the threshold Vth in each pixel before light emission. Yes.

ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใฏใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹็ฌฌ๏ผ—้›ปๆฅต๏ผ”๏ฝใจใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฏพใ—ใฆ้›ปๆฐ—็š„ใซๆŽฅ็ถšใ•ใ‚Œใ‚‹็ฌฌ๏ผ˜้›ปๆฅต๏ผ”๏ฝ‚ใจใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ใชใŠใ€็ฌฌ๏ผ‘ใฎใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใฎไฟๆŒๅฎน้‡ใ‚’ๆ‰€ๅฎšๅ€ค๏ผฃ๏ฝ“ใจใ™ใ‚‹ใ€‚ ย ย The capacitor 4 includes a seventh electrode 4a electrically connected to the third electrode 2g of the drive transistor 2 and an eighth electrode 4b electrically connected to the image signal line Lis. ing. The holding capacity of the first capacitor 4 is set to a predetermined value Cs.

ใจใ“ใ‚ใงใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฏใ€็™บๅ…‰ๆ™‚ใจ้€†ใฎ้›ปๅœงใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใจใ‚ณใƒณใƒ‡ใƒณใ‚ตใจใ—ใฆๆฉŸ่ƒฝใ—ใ€ใ“ใฎๅฎน้‡๏ผˆ๏ผฅ๏ผฌ็ด ๅญๅฎน้‡๏ผ‰ใ‚’ๆ‰€ๅฎšๅ€ค๏ผฃ๏ฝใจใ™ใ‚‹ใ€‚ใพใŸใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฏใ€็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ“๏ฝ„ใจ็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใจใฎ้–“๏ผˆไปฅไธ‹ใ€Œ็ฌฌ๏ผ’โˆ’๏ผ“้›ปๆฅต้–“ใ€ใจใ‚‚็งฐใ™ใ‚‹๏ผ‰ใฎๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ„ใจใ€็ฌฌ๏ผ‘้›ปๆฅต๏ผ’๏ฝ„๏ฝ“ใจ็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใจใฎ้–“๏ผˆไปฅไธ‹ใ€Œ็ฌฌ๏ผ‘โˆ’๏ผ“้›ปๆฅต้–“ใ€ใจใ‚‚็งฐใ™ใ‚‹๏ผ‰ใฎๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ„ใจใ‚’ๆœ‰ใ™ใ‚‹ใ€‚ๆ›ดใซใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฏใ€็ฌฌ๏ผ•้›ปๆฅต๏ผ“๏ฝ“๏ฝ„ใจ็ฌฌ๏ผ–้›ปๆฅต๏ผ“๏ฝ‡ใจใฎ้–“๏ผˆไปฅไธ‹ใ€Œ็ฌฌ๏ผ•โˆ’๏ผ–้›ปๆฅต้–“ใ€ใจใ‚‚็งฐใ™ใ‚‹๏ผ‰ใฎๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ”๏ฝˆใจใ€็ฌฌ๏ผ”้›ปๆฅต๏ผ“๏ฝ„๏ฝ“ใจ็ฌฌ๏ผ–้›ปๆฅต๏ผ“๏ฝ‡ใจใฎ้–“๏ผˆไปฅไธ‹ใ€Œ็ฌฌ๏ผ”โˆ’๏ผ–้›ปๆฅต้–“ใ€ใจใ‚‚็งฐใ™ใ‚‹๏ผ‰ใฎๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ”๏ฝˆใจใ‚’ๆœ‰ใ™ใ‚‹ใ€‚ใชใŠใ€ๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ„๏ผŒ๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ„๏ผŒ๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ”๏ฝˆ๏ผŒ๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ”๏ฝˆใฏใ€ใใ‚Œใžใ‚Œ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใ€ใŠใ‚ˆใณ๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฎๆง‹ๆˆใซใ‚ˆใฃใฆๆฑบๅฎšใ•ใ‚Œใ‚‹ๆ‰€ๅฎšๅ€คใฎๅฎน้‡ใงใ‚ใ‚‹ใ€‚ ย ย By the way, the organic EL element 1 functions as a capacitor when a voltage opposite to that at the time of light emission is applied, and this capacitance (EL element capacitance) is set to a predetermined value Co. The driving transistor 2 includes a parasitic capacitance CgsTd between the second electrode 2sd and the third electrode 2g (hereinafter also referred to as โ€œbetween the second and third electrodesโ€), and between the first electrode 2ds and the third electrode 2g. And a parasitic capacitance CgdTd (hereinafter also referred to as โ€œbetween the first and third electrodesโ€). Further, the Vth compensation transistor 3 includes a parasitic capacitance CgsTth between the fifth electrode 3sd and the sixth electrode 3g (hereinafter also referred to as โ€œbetween the fifth and sixth electrodesโ€), the fourth electrode 3ds, and the sixth electrode 3g. (Hereinafter also referred to as โ€œbetween the 4th and 6th electrodesโ€) parasitic capacitance CgdTth. The parasitic capacitances CgsTd, CgdTd, CgsTth, and CgdTth are capacitances having predetermined values determined by the configurations of the drive transistor 2 and the Vth compensation transistor 3, respectively.

ๅ›ณ๏ผ•ใฏใ€ๅ›ณ๏ผ”ใง็คบใ—ใŸ็”ป็ด ๅ›ž่ทฏ๏ผ—ใฎๅ›ž่ทฏๆง‹ๆˆ๏ผˆๅ›ณไธญๅคช็ทšใง่จ˜่ผ‰๏ผ‰ใซๅฏพใ—ใฆใ€ๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ”๏ฝˆ๏ผŒ๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ”๏ฝˆ๏ผŒ๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ„๏ผŒ๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ„ใจ๏ผฅ๏ผฌ็ด ๅญๅฎน้‡๏ผฃ๏ฝใจใซไฟ‚ใ‚‹ๅ›ž่ทฏๆง‹ๆˆ๏ผˆๅ›ณไธญ็ดฐ็ทšใง่จ˜่ผ‰๏ผ‰ใ‚’ๅŠ ใˆใŸๆจกๅผๅ›ณใงใ‚ใ‚‹ใ€‚ ย ย FIG. 5 shows a circuit configuration related to the parasitic capacitances CgsTth, CgdTth, CgsTd, CgdTd and the EL element capacitance Co (thin line in the drawing) with respect to the circuit configuration of the pixel circuit 7 shown in FIG. It is the schematic diagram which added description.

ๅ›ณ๏ผ•ใง็คบใ™ใ‚ˆใ†ใซใ€็”ป็ด ๅ›ž่ทฏ๏ผ—ใงใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎไธก้›ปๆฅต้–“ใซใฏ๏ผฅ๏ผฌ็ด ๅญๅฎน้‡๏ผฃ๏ฝใ‚’ๆœ‰ใ™ใ‚‹ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผˆ็ด ๅญใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ‰๏ผ‘๏ฝƒใŒๅญ˜ๅœจใ—ใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ’โˆ’๏ผ“้›ปๆฅต้–“ใซใฏๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ„ใ‚’ๆœ‰ใ™ใ‚‹ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ’๏ฝ‡๏ฝ“ใŒๅญ˜ๅœจใ™ใ‚‹ไธ€ๆ–นใงใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘โˆ’๏ผ“้›ปๆฅต้–“ใซใฏๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ„ใ‚’ๆœ‰ใ™ใ‚‹ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ’๏ฝ‡๏ฝ„ใŒๅญ˜ๅœจใ—ใ€ๆ›ดใซใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฎ็ฌฌ๏ผ•โˆ’๏ผ–้›ปๆฅต้–“ใซใฏๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ“๏ผด๏ฝ”๏ฝˆใ‚’ๆœ‰ใ™ใ‚‹ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ“๏ฝ‡๏ฝ“ใŒๅญ˜ๅœจใ™ใ‚‹ไธ€ๆ–นใงใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฎ็ฌฌ๏ผ”โˆ’๏ผ–้›ปๆฅต้–“ใซใฏๅฏ„็”Ÿๅฎน้‡๏ผฃ๏ฝ‡๏ฝ„๏ผด๏ฝ”๏ฝˆใ‚’ๆœ‰ใ™ใ‚‹ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ“๏ฝ‡๏ฝ„ใŒๅญ˜ๅœจใ—ใฆใ„ใ‚‹็Šถๆ…‹ใจ็ญ‰ไพกใช็Šถๆ…‹ใŒ็™บ็”Ÿใ™ใ‚‹ใ€‚ ย ย As shown in FIG. 5, in the pixel circuit 7, a capacitor (element capacitor) 1 c having an EL element capacitance Co exists between both electrodes of the organic EL element 1, and between the second and third electrodes of the driving transistor 2. While the capacitor 2gs having the parasitic capacitance CgsTd exists, the capacitor 2gd having the parasitic capacitance CgdTd exists between the first and third electrodes of the driving transistor 2, and further, between the fifth and sixth electrodes of the Vth compensation transistor 3. On the other hand, a capacitor 3gs having a parasitic capacitance CgsTth exists, while a state equivalent to a state in which a capacitor 3gd having a parasitic capacitance CgdTth exists between the fourth and sixth electrodes of the Vth compensation transistor 3 occurs.

ใชใŠใ€ใ“ใ“ใงใฏใ€๏ผ‘ใคใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซ็€็›ฎใ—ใฆ่ชฌๆ˜Žใ—ใŸใŒใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚ค๏ผก๏ผกๅ…จไฝ“ใงใฏใ€็”ป็ด ๅ›ž่ทฏ๏ผ—ใŒๅคšๆ•ฐๅญ˜ๅœจใ™ใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใ‚‚ๅคšๆ•ฐๅญ˜ๅœจใ™ใ‚‹ใ€‚ใใ“ใงใ€ไปฅไธ‹ใงใฏใ€ๅคšๆ•ฐใฎ่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใ‚’ใ€้ฉๅฎœใ€Œ็ฌฌ๏ผฎ่ตฐๆŸปไฟกๅท็ทš๏ผˆ๏ผฎใฏ่‡ช็„ถๆ•ฐ๏ผ‰๏ผฌ๏ฝ“๏ฝ“ใ€ใจ็งฐใ™ใ‚‹ใ€‚ ย ย Here, the description has been given focusing on one pixel circuit 7, but there are a large number of pixel circuits 7 in the entire organic EL display AA. For this reason, there are many scanning signal lines Lss. Therefore, in the following, a large number of scanning signal lines Lss are appropriately referred to as โ€œNth scanning signal line (N is a natural number) Lssโ€.

๏ผœๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญใฎ็™บๅ…‰ใซ้–ขใ™ใ‚‹้ง†ๅ‹•ๆ–นๆณ•๏ผž
ๅ›ณ๏ผ–ใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’็™บๅ…‰ใ•ใ›ใ‚‹้š›ใฎไฟกๅทๆณขๅฝข๏ผˆ้ง†ๅ‹•ๆณขๅฝข๏ผ‰ใ‚’็คบใ™ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใƒใƒฃใƒผใƒˆใงใ‚ใ‚‹ใ€‚ๅ›ณ๏ผ–ใงใฏใ€ๆจช่ปธใŒๆ™‚ๅˆปใ‚’็คบใ—ใ€ไธŠใ‹ใ‚‰้ †ใซใ€(๏ฝ)๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปไฝ๏ผˆ้›ปไฝ๏ผถ๏ฝ„๏ฝ„๏ผ‰ใ€(๏ฝ‚)๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๅฐๅŠ ใ•ใ‚Œใ‚‹้›ปไฝ๏ผˆ้›ปไฝ๏ผถ๏ฝ“๏ฝ“๏ผ‰ใ€(๏ฝƒ)็ฌฌ๏ผ‘่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซๅฐๅŠ ใ•ใ‚Œใ‚‹ไฟกๅทใฎ้›ปไฝ๏ผˆ้›ปไฝ๏ผถ๏ฝŒ๏ฝ“๏ผ‘๏ผ‰ใ€(๏ฝ„)็ฌฌ๏ผ’่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซๅฐๅŠ ใ•ใ‚Œใ‚‹ไฟกๅทใฎ้›ปไฝ๏ผˆ้›ปไฝ๏ผถ๏ฝŒ๏ฝ“๏ผ’๏ผ‰ใ€(๏ฝ…)็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฐๅŠ ใ•ใ‚Œใ‚‹ไฟกๅทใฎ้›ปไฝ๏ผˆ้›ปไฝ๏ผถ๏ฝŒ๏ฝ‰๏ฝ“๏ผ‰ใ€ใฎๆณขๅฝขใŒ็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ใชใŠใ€้›ปไฝ๏ผถ๏ฝŒ๏ฝ‰๏ฝ“ใฏใ€ๅ„ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰่ผๅบฆใซใ‚ˆใฃใฆๆฑบใพใ‚‹ไปปๆ„ใฎๅ€คใงใ‚ใ‚‹ใŸใ‚ใ€ๅ›ณ๏ผ–ใงใฏใ€ๅฝ“่ฉฒไฟกๅทใฎ้›ปไฝใŒๅญ˜ๅœจใ—ๅพ—ใ‚‹็ฏ„ๅ›ฒใซๆ–œ็ทšใƒใƒƒใƒใƒณใ‚ฐใŒไพฟๅฎœ็š„ใซไป˜ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
<Driving method for light emission of organic EL element>
FIG. 6 is a timing chart showing signal waveforms (drive waveforms) when the organic EL element 1 emits light. In FIG. 6, the horizontal axis indicates time, and in order from the top, (a) the potential applied to the VDD line Lvd (potential Vdd), (b) the potential applied to the VSS line Lvs (potential Vss), (c) The potential of the signal applied to the first scanning signal line Lss (potential Vls1), (d) the potential of the signal applied to the second scanning signal line Lss (potential Vls2), and (e) applied to the image signal line Lis. The waveform of the potential of the signal (potential Vlis) is shown. Since the potential Vlis is an arbitrary value determined by the light emission luminance of each organic EL element 1, in FIG. 6, hatched hatching is added for convenience in the range where the potential of the signal can exist.

ใพใŸใ€ๅ›ณ๏ผ–ใงใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’๏ผ‘ๅ›ž็™บๅ…‰ใ•ใ›ใ‚‹ใŸใ‚ใฎ้ง†ๅ‹•ๆณขๅฝขใŒ็คบใ•ใ‚ŒใฆใŠใ‚Šใ€๏ผ‘ๅ›žใฎ็™บๅ…‰ใซไฟ‚ใ‚‹ๆœŸ้–“ใฏใ€ๆ™‚้–“้ †ๆฌกใซใ€๏ผฃ๏ฝ“ๅˆๆœŸๅŒ–ๆœŸ้–“๏ผฐ๏ผ‘๏ผˆๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ‘ใ€œ๏ฝ”๏ผ‘๏ผ’๏ผ‰ใ€ๆบ–ๅ‚™ๆœŸ้–“๏ผฐ๏ผ’๏ผˆๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ’ใ€œ๏ฝ”๏ผ‘๏ผ“๏ผ‰ใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„ŸๆœŸ้–“๏ผฐ๏ผ“๏ผˆๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ“ใ€œ๏ฝ”๏ผ‘๏ผ”๏ผ‰ใ€ๆ›ธ่พผๆœŸ้–“๏ผฐ๏ผ”๏ผˆๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ”ใ€œ๏ฝ”๏ผ‘๏ผ•๏ผ‰ใ€็ด ๅญๅˆๆœŸๅŒ–ๆœŸ้–“๏ผฐ๏ผ•๏ผˆๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ•ใ€œ๏ฝ”๏ผ‘๏ผ–๏ผ‰ใ€ใŠใ‚ˆใณ็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–๏ผˆๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ–ใ€œ๏ฝ”๏ผ‘๏ผ—๏ผ‰ใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚Œใ‚‹ใ€‚ ย ย In addition, FIG. 6 shows a drive waveform for causing the organic EL element 1 to emit light once, and a period related to one light emission is a Cs initialization period P1 (time t11 to t12) in time sequence. Preparation period P2 (time t12 to t13), Vth compensation period P3 (time t13 to t14), writing period P4 (time t14 to t15), element initialization period P5 (time t15 to t16), and light emission period P6 (time) t16 to t17).

ๅ›ณ๏ผ—ใ‹ใ‚‰ๅ›ณ๏ผ‘๏ผ‘ใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใ‚’้ง†ๅ‹•ใ•ใ›ใ‚‹้š›ใซใ€ๅ„ๆœŸ้–“ใซใŠใ„ใฆ็™บ็”Ÿใ™ใ‚‹็”ป็ด ๅ›ž่ทฏ๏ผ—ใฎ้›ปๆตใฎๆตใ‚Œใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚ๅ›ณ๏ผ—ใ‹ใ‚‰ๅ›ณ๏ผ‘๏ผ‘ใงใฏใ€็”ป็ด ๅ›ž่ทฏ๏ผ—ใฎใ†ใกใ€้›ปๆตใฎๆตใ‚Œใซๅฏ„ไธŽใ™ใ‚‹ๅ›ž่ทฏใฏๅคช็ทšใง็คบใ•ใ‚Œใ€้›ปๆตใฎๆตใ‚Œใซใปใจใ‚“ใฉๅฏ„ไธŽใ—ใชใ„ๅ›ž่ทฏใฏ็ดฐ็ทšใง็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย 7 to 11 are diagrams illustrating the flow of current of the pixel circuit 7 generated in each period when the image display device 1A is driven. 7 to 11, among the pixel circuits 7, circuits that contribute to the current flow are indicated by thick lines, and circuits that hardly contribute to the current flow are indicated by thin lines.

ไปฅไธ‹ใ€ๅ›ณ๏ผ–ใŠใ‚ˆใณๅ›ณ๏ผ—ใ‹ใ‚‰ๅ›ณ๏ผ‘๏ผ‘ใ‚’้ฉๅฎœๅ‚็…งใ—ใคใคใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฎ้ง†ๅ‹•ๆ–นๆณ•ใซใคใ„ใฆ่ชฌๆ˜Žใ™ใ‚‹ใ€‚ ย ย Hereinafter, a method for driving the image display apparatus 1A will be described with reference to FIGS. 6 and 7 to 11 as appropriate.

โ—‹๏ผฃ๏ฝ“ๅˆๆœŸๅŒ–ๆœŸ้–“๏ผฐ๏ผ‘๏ผš
ๅ›ณ๏ผ—ใงใฏใ€๏ผฃ๏ฝ“ๅˆๆœŸๅŒ–ๆœŸ้–“๏ผฐ๏ผ‘๏ผˆไปฅไธ‹้ฉๅฎœใ€ŒๆœŸ้–“๏ผฐ๏ผ‘ใ€ใจ็•ฅใ™ใ‚‹๏ผ‰ใงใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚ŒใŒไพ‹็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
โ—‹ Cs initialization period P1:
FIG. 7 illustrates a current flow in the pixel circuit 7 in the Cs initialization period P1 (hereinafter, abbreviated as โ€œperiod P1โ€ as appropriate).

ๆœŸ้–“๏ผฐ๏ผ‘ใงใฏใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใŠใ‚ˆใณ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซใใ‚Œใžใ‚Œๆ‰€ๅฎšใฎๆญฃใฎ้ซ˜้›ปไฝ๏ผถ๏ผค๏ผค๏ผˆไพ‹ใˆใฐ๏ผ‘๏ผ•๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€ๅ…จ่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซๆ‰€ๅฎšใฎๆญฃใฎ้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจ๏ผˆไพ‹ใˆใฐ๏ผ‘๏ผ•๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๆ‰€ๅฎšใฎๅŸบๆบ–้›ปไฝ๏ผˆใ“ใ“ใงใฏ๏ผ๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใ€‚ ย ย In the period P1, a predetermined positive high potential VDD (for example, 15V) is applied to the VDD line Lvd and the VSS line Lvs, respectively, and a predetermined positive high potential VgH (for example, 15V) is applied to all the scanning signal lines Lss. A predetermined reference potential (0 V in this case) is applied to the signal line Lis.

ใ“ใฎใจใใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใซใคใ„ใฆใฏใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซใŠใ‘ใ‚‹้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใฎๅฐๅŠ ใซใ‚ˆใ‚Šใ€็ฌฌ๏ผ–้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ“๏ฝ‡ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใซๅฟœใ˜ใŸๆญฃ้›ปไฝใŒๅฐๅŠ ใ•ใ‚Œใ€ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ไธ€ๆ–นใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซใคใ„ใฆใฏใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใจ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใจใŒ็•ฅๅŒ้›ปไฝใงใ‚ใ‚‹ใŸใ‚ใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใŒๅฎŸ่ณช็š„ใซใ‚ชใƒ•ใจใชใ‚Šใ€้žๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ ย ย At this time, the Vth compensation transistor 3 is turned on by applying a high potential VgH on the scanning signal line Lss to apply a positive potential corresponding to the high potential VgH to the sixth electrode (gate) 3g. On the other hand, for the drive transistor 2, since the VDD line Lvd and the VSS line Lvs are substantially at the same potential, the drive transistor 2 is substantially turned off and becomes non-conductive.

ใ—ใŸใŒใฃใฆใ€ๆœŸ้–“๏ผฐ๏ผ‘ใงใฏใ€ๅ›ณ๏ผ—ใซใŠใ„ใฆ็™ฝๆŠœใใฎ็Ÿขๅฐใง็คบใ™ใ‚ˆใ†ใซใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใ‹ใ‚‰๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฎ็ฌฌ๏ผ”ใŠใ‚ˆใณ็ฌฌ๏ผ•้›ปๆฅต๏ผ“๏ฝ„๏ฝ“๏ผŒ๏ผ“๏ฝ“๏ฝ„ใ‚’ไป‹ใ—ใฆใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซๅ‘ใ‘ใฆ้›ปๆตใŒๆตใ‚Œใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซๆ‰€ๅฎš้‡ใฎ้›ป่ท๏ผˆไพ‹ใˆใฐใ€๏ผ‘๏ผ•๏ผถใซๅฟœใ˜ใŸ้›ป่ท้‡๏ผ‰ใŒ่“„็ฉใ•ใ‚Œใ‚‹ใ€‚ ย ย Therefore, in the period P1, current flows from the VDD line Lvd to the capacitor 4 via the fourth and fifth electrodes 3ds and 3sd of the Vth compensation transistor 3 as indicated by the white arrow in FIG. A predetermined amount of charge (for example, a charge amount corresponding to 15 V) is accumulated in 4.

ใชใŠใ€ๆœŸ้–“๏ผฐ๏ผ‘ใซใŠใ‘ใ‚‹ๆ™‚้–“็ตŒ้Žใจใจใ‚‚ใซใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚Œใ‚‹้›ป่ท้‡ใŒ้ซ˜ใพใ‚‹ใจใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซใŠใ„ใฆใ€็ฌฌ๏ผ“้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ’๏ฝ‡ใซๆ‰€ๅฎšๅ€คใ‚’่ถ…ใˆใ‚‹ๆญฃ้›ปไฝใŒๅฐๅŠ ใ•ใ‚Œใ€ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ“ใจใ‚‚ใ‚ใ‚Šๅพ—ใ‚‹ใ€‚ใ—ใ‹ใ—ใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใŠใ‚ˆใณ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใŒใจใ‚‚ใซๅŒ้›ปไฝ๏ผถ๏ผค๏ผคใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹ใŸใ‚ใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘โˆ’๏ผ’้›ปๆฅต้–“ใง้›ปๆตใฏๆตใ‚Œใชใ„ใ€‚ ย ย If the amount of charge accumulated in the capacitor 4 increases with the passage of time in the period P1, a positive potential exceeding a predetermined value may be applied to the third electrode (gate) 2g in the driving transistor 2 and the conductive state may be established. obtain. However, since the VDD line Lvd and the VSS line Lvs are both set to the same potential VDD, no current flows between the first and second electrodes of the drive transistor 2.

โ—‹ๆบ–ๅ‚™ๆœŸ้–“๏ผฐ๏ผ’๏ผš
ๅ›ณ๏ผ˜ใงใฏใ€ๆบ–ๅ‚™ๆœŸ้–“๏ผฐ๏ผ’๏ผˆไปฅไธ‹้ฉๅฎœใ€ŒๆœŸ้–“๏ผฐ๏ผ’ใ€ใจ็•ฅใ™ใ‚‹๏ผ‰ใงใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚ŒใŒไพ‹็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
โ—‹ Preparation period P2:
FIG. 8 illustrates the flow of current in the pixel circuit 7 in the preparation period P2 (hereinafter abbreviated as โ€œperiod P2โ€ as appropriate).

ๆœŸ้–“๏ผฐ๏ผ’ใงใฏใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใซ่ฒ ใฎๆ‰€ๅฎš้›ปไฝโˆ’๏ผถ๏ฝ๏ผˆไพ‹ใˆใฐโˆ’๏ผ—๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๆ‰€ๅฎšใฎๅŸบๆบ–้›ปไฝ๏ผˆใ“ใ“ใงใฏ๏ผ๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€ๅ…จ่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซๆ‰€ๅฎšใฎไฝŽ้›ปไฝ๏ผถ๏ฝ‡๏ผฌ๏ผˆไพ‹ใˆใฐโˆ’๏ผ‘๏ผ๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๆ‰€ๅฎšใฎ้ซ˜้›ปไฝ๏ผถ๏ฝ„๏ผจ๏ผˆไพ‹ใˆใฐ๏ผ‘๏ผ๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใ€‚ ย ย In the period P2, a negative predetermined potential โˆ’Vp (for example, โˆ’7V) is applied to the VDD line Lvd, a predetermined reference potential (here, 0V) is applied to the VSS line Lvs, and a predetermined low potential is applied to all the scanning signal lines Lss. VgL (for example, โˆ’10 V) is applied, and a predetermined high potential VdH (for example, 10 V) is applied to the image signal line Lis.

ใ“ใฎใจใใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใซใคใ„ใฆใฏใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซใŠใ‘ใ‚‹ไฝŽ้›ปไฝ๏ผถ๏ฝ‡๏ผฌใฎๅฐๅŠ ใซใ‚ˆใ‚Šใ€็ฌฌ๏ผ–้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ“๏ฝ‡ใซใฏใปใจใ‚“ใฉๆญฃใฎ้›ปไฝใŒๅฐๅŠ ใ•ใ‚Œใชใ„ใŸใ‚ใ€้žๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ไธ€ๆ–นใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซใคใ„ใฆใฏใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซใŠใ‘ใ‚‹้ซ˜้›ปไฝ๏ผถ๏ฝ„๏ผจใฎๅฐๅŠ ใซใ‚ˆใ‚Šใ€็ฌฌ๏ผ“้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ’๏ฝ‡ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ„๏ผจใซๅฟœใ˜ใŸๆญฃ้›ปไฝ๏ผˆไพ‹ใˆใฐ๏ผ‘๏ผ•๏ผ‹๏ผ‘๏ผ๏ผ๏ผ’๏ผ•๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ ย ย At this time, the Vth compensation transistor 3 is in a non-conductive state because almost no positive potential is applied to the sixth electrode (gate) 3g due to the application of the low potential VgL in the scanning signal line Lss. On the other hand, the drive transistor 2 is turned on by applying a high potential VdH to the image signal line Lis and applying a positive potential (for example, 15 + 10 = 25 V) corresponding to the high potential VdH to the third electrode (gate) 2g. .

ใใ—ใฆใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใ‚ˆใ‚Šใ‚‚๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใฎๆ–นใŒ๏ผถ๏ฝใ ใ‘้›ปไฝใŒ้ซ˜ใ„ใŸใ‚ใ€ๅ›ณ๏ผ˜ใซใŠใ„ใฆ็™ฝๆŠœใใฎ็Ÿขๅฐใง็คบใ™ใ‚ˆใ†ใซใ€๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใ‹ใ‚‰้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ’ใŠใ‚ˆใณ็ฌฌ๏ผ‘้›ปๆฅต๏ผ’๏ฝ“๏ฝ„๏ผŒ๏ผ’๏ฝ„๏ฝ“ใ‚’ไป‹ใ—ใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซๅ‘ใ‘ใฆ้›ปๆตใŒๆตใ‚Œใ‚‹ใ€‚ใใฎ็ตๆžœใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ™ใชใ‚ใก็ด ๅญใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ‘๏ฝƒใซ๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใจ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใจใฎ้–“ใฎ้›ปไฝๅทฎใซๅฟœใ˜ใŸๆ‰€ๅฎš้‡ใฎ้›ป่ท๏ผˆไพ‹ใˆใฐ๏ผ—๏ผถใซๅฟœใ˜ใŸ้›ป่ท๏ผ‰ใŒ่“„็ฉใ•ใ‚Œใ‚‹ใ€‚ ย ย Since the potential of the VSS line Lvs is higher by Vp than that of the VDD line Lvd, the second and first electrodes 2sd and 2ds of the drive transistor 2 are connected from the VSS line Lvs as shown by white arrows in FIG. Thus, a current flows toward the organic EL element 1. As a result, a predetermined amount of electric charge (for example, electric charge corresponding to 7 V) corresponding to the potential difference between the VDD line Lvd and the VSS line Lvs is accumulated in the organic EL element 1, that is, the element capacitor 1c.

โ—‹๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„ŸๆœŸ้–“๏ผฐ๏ผ“๏ผš
ๅ›ณ๏ผ™ใงใฏใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„ŸๆœŸ้–“๏ผฐ๏ผ“๏ผˆไปฅไธ‹้ฉๅฎœใ€ŒๆœŸ้–“๏ผฐ๏ผ“ใ€ใจ็•ฅใ™ใ‚‹๏ผ‰ใงใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚ŒใŒไพ‹็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
โ—‹ Vth compensation period P3:
FIG. 9 illustrates a current flow in the pixel circuit 7 in the Vth compensation period P3 (hereinafter, abbreviated as โ€œperiod P3โ€ as appropriate).

ๆœŸ้–“๏ผฐ๏ผ“ใงใฏใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใŠใ‚ˆใณ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซใใ‚Œใžใ‚Œๆ‰€ๅฎšใฎๅŸบๆบ–้›ปไฝ๏ผˆใ“ใ“ใงใฏ๏ผ๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€ๅ…จ่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใŒๅฐๅŠ ใ•ใ‚Œใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ„๏ผจ๏ผˆไพ‹ใˆใฐ๏ผ‘๏ผ๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใ€‚ ย ย In the period P3, a predetermined reference potential (here, 0V) is applied to the VDD line Lvd and the VSS line Lvs, the high potential VgH is applied to all the scanning signal lines Lss, and the high potential VdH (for example, 10V) is applied to the image signal line Lis. ) Is applied.

ใ“ใฎใจใใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใซใคใ„ใฆใฏใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซใŠใ‘ใ‚‹้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใฎๅฐๅŠ ใซใ‚ˆใ‚Šใ€็ฌฌ๏ผ–้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ“๏ฝ‡ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใซๅฟœใ˜ใŸๆญฃ้›ปไฝใŒๅฐๅŠ ใ•ใ‚Œใ€ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ใพใŸใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซใคใ„ใฆใฏใ€ๆœŸ้–“๏ผฐ๏ผ“ใฎๅˆๆœŸใงใฏใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใจ็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฐๅŠ ใ•ใ‚ŒใŸ้›ปไฝ๏ผถ๏ฝ„๏ผจใซใ‚ˆใ‚Šใ€ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ ย ย At this time, the Vth compensation transistor 3 is turned on by applying a high potential VgH on the scanning signal line Lss to apply a positive potential corresponding to the high potential VgH to the sixth electrode (gate) 3g. Further, the driving transistor 2 becomes conductive at the beginning of the period P3 due to the electric charge accumulated in the capacitor 4 and the potential VdH applied to the image signal line Lis.

ใ—ใŸใŒใฃใฆใ€ๆœŸ้–“๏ผฐ๏ผ“ใฎๅˆๆœŸใงใฏใ€ๅ›ณ๏ผ™ใซใŠใ„ใฆ็™ฝๆŠœใใฎ็Ÿขๅฐใง็คบใ™ใ‚ˆใ†ใซใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใซไผดใ†้›ปๆตใŒใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใ‹ใ‚‰๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฎ็ฌฌ๏ผ•ใŠใ‚ˆใณ็ฌฌ๏ผ”้›ปๆฅต๏ผ“๏ฝ“๏ฝ„๏ผŒ๏ผ“๏ฝ„๏ฝ“ใ€ๆ›ดใซใฏ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘ใŠใ‚ˆใณ็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ„๏ฝ“๏ผŒ๏ผ’๏ฝ“๏ฝ„ใ‚’ไป‹ใ—ใฆ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๅ‘ใ‘ใฆๆตใ‚Œใ‚‹ใ€‚ใพใŸใ€็ด ๅญใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ‘๏ฝƒใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใซไผดใ†้›ปๆตใŒใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘ใŠใ‚ˆใณ็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ„๏ฝ“๏ผŒ๏ผ’๏ฝ“๏ฝ„ใ‚’ไป‹ใ—ใฆ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๅ‘ใ‘ใฆๆตใ‚Œใ‚‹ใ€‚ ย ย Therefore, at the beginning of the period P3, as indicated by the white arrow in FIG. 9, the current accompanying the charge accumulated in the capacitor 4 is supplied from the capacitor 4 to the fifth and fourth electrodes 3sd, 3ds of the Vth compensation transistor 3. Furthermore, it flows toward the VSS line Lvs via the first and second electrodes 2ds and 2sd of the driving transistor 2. In addition, a current associated with the charge accumulated in the element capacitor 1c flows toward the VSS line Lvs via the first and second electrodes 2ds and 2sd of the driving transistor 2.

ใจใ“ใ‚ใŒใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใซไผดใ†้›ปๆตใŒใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใ‹ใ‚‰๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๅ‘ใ‘ใฆๆตใ‚Œใ‚‹ใซใคใ‚Œใฆใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใŒๆธ›ๅฐ‘ใ™ใ‚‹ใ€‚ใใ—ใฆใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ’้›ปๆฅต๏ผ’๏ฝ“๏ฝ„ใซๅฏพใ™ใ‚‹็ฌฌ๏ผ“้›ปๆฅต๏ผ’๏ฝ‡ใฎ้›ปไฝ๏ผˆใ™ใชใ‚ใกใ€๏ผถ๏ฝ‡๏ฝ“๏ผ‰ใŒๅฎŸ่ณช็š„ใซ้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใพใงๆธ›ๅฐ‘ใ™ใ‚‹ใจใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฏใ€้žๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ใ“ใฎใจใใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซใฏใ€้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใซๅฟœใ˜ใŸ้›ป่ทใŒ่“„็ฉใ•ใ‚ŒใŸ็Šถๆ…‹ใจใชใ‚‹ใ€‚ใ“ใฎใ‚ˆใ†ใซใ€ๆœŸ้–“๏ผฐ๏ผ“ใงใฏใ€้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใซๅฟœใ˜ใŸ้›ป่ทใŒใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚Œใฆใ€็”ป็ด ใ”ใจใซ็•ฐใชใ‚‹้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใฎใฐใ‚‰ใคใใŒ่ฃœๅ„Ÿใ•ใ‚Œใ‚‹ใ€‚ ย ย However, as the current accompanying the charge accumulated in the capacitor 4 flows from the capacitor 4 toward the VSS line Lvs, the charge accumulated in the capacitor 4 decreases. When the potential of the third electrode 2g (that is, Vgs) with respect to the second electrode 2sd of the drive transistor 2 is substantially reduced to the threshold value Vth, the drive transistor 2 is turned off. At this time, the capacitor 4 is in a state where charges according to the threshold value Vth are accumulated. As described above, in the period P3, the electric charge corresponding to the threshold value Vth is accumulated in the capacitor 4, and the variation in the threshold value Vth that is different for each pixel is compensated.

โ—‹ๆ›ธ่พผๆœŸ้–“๏ผฐ๏ผ”๏ผš
ๅ›ณ๏ผ‘๏ผใงใฏใ€ๆ›ธ่พผๆœŸ้–“๏ผฐ๏ผ”๏ผˆไปฅไธ‹้ฉๅฎœใ€ŒๆœŸ้–“๏ผฐ๏ผ”ใ€ใจ็•ฅใ™ใ‚‹๏ผ‰ใงใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚ŒใŒไพ‹็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
โ—‹ Writing period P4:
FIG. 10 illustrates the flow of current in the pixel circuit 7 in the writing period P4 (hereinafter abbreviated as โ€œperiod P4โ€ as appropriate).

ๆœŸ้–“๏ผฐ๏ผ”ใงใฏใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใŠใ‚ˆใณ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซใใ‚Œใžใ‚ŒๅŸบๆบ–้›ปไฝ๏ผ๏ผถใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใจใจใ‚‚ใซใ€็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ้›ป่ทใฎ่“„็ฉใ‚’่กŒใ†ๅ‡ฆ็†๏ผˆใƒ‡ใƒผใ‚ฟๆ›ธ่พผๅ‡ฆ็†๏ผ‰ใฎๅฎŸๆ–ฝๅฏพ่ฑก็”ป็ด ใซใŠใ„ใฆใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใŒๅฐๅŠ ใ•ใ‚Œใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซ้›ปไฝ๏ผˆ๏ผถ๏ฝ„๏ผจโˆ’๏ผถdata๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใ€‚ใชใŠใ€้›ปไฝ๏ผถdataใฏใ€็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใฎ้›ปไฝใงใ‚ใ‚Šใ€็”ปๅƒใ‚’ๆง‹ๆˆใ™ใ‚‹็”ป็ด ใฎ่ผๅบฆใฎ้šŽ่ชฟใซๅฏพๅฟœใ™ใ‚‹ๅ€คใซๅฟœใ˜ใŸ้›ปไฝใงใ‚ใ‚‹ใ€‚ ย ย In the period P4, the reference potential 0V is applied to the VDD line Lvd and the VSS line Lvs, respectively, and the scanning signal line Lss in the target pixel of the process (data writing process) for accumulating charges according to the pixel data signal. Is applied with a high potential VgH, and a potential (VdHโˆ’Vdata) is applied to the image signal line Lis. Note that the potential Vdata is a potential of the pixel data signal and is a potential corresponding to a value corresponding to the luminance gradation of the pixels constituting the image.

ใ“ใฎใจใใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใซใคใ„ใฆใฏใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซใŠใ‘ใ‚‹้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใฎๅฐๅŠ ใซใ‚ˆใ‚Šใ€ใ‚ฒใƒผใƒˆใซ้ซ˜้›ปไฝ๏ผถ๏ฝ‡๏ผจใซๅฟœใ˜ใŸๆญฃ้›ปไฝใŒๅฐๅŠ ใ•ใ‚Œใ€ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ไธ€ๆ–นใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซใคใ„ใฆใฏใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฏพใ—ใฆใ€ๆœŸ้–“๏ผฐ๏ผ“ใซใŠใ‘ใ‚‹้›ปไฝ๏ผถ๏ฝ„๏ผจไปฅไธ‹ใฎ้›ปไฝ๏ผˆ๏ผถ๏ฝ„๏ผจโˆ’๏ผถdata๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ€๏ผถ๏ฝ‡๏ฝ“ใŒ้–พๅ€ค๏ผถ๏ฝ”๏ฝˆไปฅไธ‹ใจใชใ‚‹ใŸใ‚ใ€้žๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ ย ย At this time, the Vth compensation transistor 3 becomes conductive by applying a high potential VgH to the scanning signal line Lss to apply a positive potential according to the high potential VgH to the gate. On the other hand, the drive transistor 2 is turned off because a potential (VdHโˆ’Vdata) equal to or lower than the potential VdH in the period P3 is applied to the image signal line Lis and Vgs is equal to or lower than the threshold value Vth.

ใ—ใŸใŒใฃใฆใ€ๆœŸ้–“๏ผฐ๏ผ”ใงใฏใ€ๅ›ณ๏ผ‘๏ผใซใŠใ„ใฆ็™ฝๆŠœใใฎ็Ÿขๅฐใง็คบใ™ใ‚ˆใ†ใซใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘๏ผˆใ™ใชใ‚ใก็ด ๅญใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ‘๏ฝƒ๏ผ‰ใ‹ใ‚‰๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใฎ็ฌฌ๏ผ”ใŠใ‚ˆใณ็ฌฌ๏ผ•้›ปๆฅต๏ผ“๏ฝ„๏ฝ“๏ผŒ๏ผ“๏ฝ“๏ฝ„ใ‚’ไป‹ใ—ใฆใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซๅ‘ใ‘ใฆ้›ปๆตใŒๆตใ‚Œใ‚‹ใ€‚ใใฎ็ตๆžœใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซๆ—ขใซ่“„็ฉใ•ใ‚ŒใŸ้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใซๅฟœใ˜ใŸ้›ป่ทใฎไธŠใซ้›ปไฝ๏ผถdataใซๅฟœใ˜ใŸ้›ป่ทใŒๅŠ ็ฎ—ใ•ใ‚Œใฆ่“„็ฉใ•ใ‚Œใ‚‹ใ€‚ใ™ใชใ‚ใกใ€ๆœŸ้–“๏ผฐ๏ผ”ใซใŠใ„ใฆใฏใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰่ผๅบฆใซๅฟœใ˜ใŸ้›ป่ทใŒ่“„็ฉใ•ใ‚Œใ‚‹ใ€‚ๆ›่จ€ใ™ใ‚Œใฐใ€ๆœŸ้–“๏ผฐ๏ผ”ใงใฏใ€็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ„ใฆ็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ้›ป่ทใŒใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚Œใ‚‹ใ€‚ ย ย Therefore, in the period P4, as indicated by a white arrow in FIG. 10, the organic EL element 1 (that is, the element capacitor 1c) is connected to the capacitor 4 via the fourth and fifth electrodes 3ds and 3sd of the Vth compensation transistor 3. An electric current flows toward. As a result, the charge corresponding to the potential Vdata is added to the charge corresponding to the threshold value Vth already stored in the capacitor 4 and stored. That is, in the period P4, electric charges corresponding to the light emission luminance of the organic EL element 1 are accumulated in the capacitor 4. In other words, charges corresponding to the pixel data signal are accumulated in the capacitor 4 in the pixel circuit 7 in the period P4.

ใชใŠใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใฎ็ฌฌ๏ผ—้›ปๆฅต๏ผ”๏ฝใฎ้›ปไฝ๏ผˆ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎใ‚ฒใƒผใƒˆ้›ปไฝ๏ผ‰ใฎๅค‰ๅŒ–้‡ใฏใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใฎ้›ปไฝใฎๅค‰ๅŒ–้‡ใจใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใฎไฟๆŒๅฎน้‡๏ผฃ๏ฝ“ใจ็ด ๅญใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ‘๏ฝƒใฎ๏ผฅ๏ผฌ็ด ๅญๅฎน้‡๏ผฃ๏ฝใจใฎๆฏ”๏ผˆๅฎน้‡ๆฏ”๏ผ‰ใจใฎ็ฉใงใ‚ใ‚‹ใ€‚ใ™ใชใ‚ใกใ€ๆœฌๅฎŸๆ–ฝๅฝขๆ…‹ใซใŠใ„ใฆใฏใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใฎ้›ปไฝใŒ๏ผถ๏ฝ„๏ผจใ‹ใ‚‰๏ผถdataใซๅค‰ๅŒ–ใ™ใ‚‹ๅ ดๅˆใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎใ‚ฒใƒผใƒˆ้›ปไฝใŒ๏ผˆ๏ผถdataโˆ’๏ผถ๏ฝ„๏ผจ๏ผ‰ใƒป๏ผฃ๏ฝ“๏ผ(๏ผฃ๏ฝ“๏ผ‹๏ผฃ๏ฝ)ๅค‰ๅŒ–ใ™ใ‚‹ใ€‚ไพ‹ใˆใฐใ€๏ผถ๏ฝ„๏ผจ๏ผ๏ผ‘๏ผ๏ผถใ€๏ผถdata๏ผ๏ผ•๏ผถใ€๏ผฃ๏ฝ“๏ผš๏ผฃ๏ฝ๏ผ๏ผ‘๏ผš๏ผ’ใงใ‚ใ‚‹ๅ ดๅˆใซใฏใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใฎ้›ปไฝใŒโˆ’๏ผ•๏ผถๅค‰ๅŒ–ใ—ใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎใ‚ฒใƒผใƒˆ้›ปไฝใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‹ใ‚‰ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซๅฏพใ™ใ‚‹้›ป่ทใฎ็งปๅ‹•ใซใ‚ˆใ‚Šใ€๏ผˆ๏ผ•โˆ’๏ผ‘๏ผ๏ผ‰ใƒป๏ผ‘๏ผ๏ผˆ๏ผ‘๏ผ‹๏ผ’๏ผ‰๏ผโˆ’๏ผ•๏ผ๏ผ“๏ผถๅค‰ๅŒ–ใ™ใ‚‹ใ€‚ใ“ใฎใ‚ˆใ†ใซใ€ใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚Œใ‚‹้›ป่ทใฎ็งปๅ‹•ใซใ‚ˆใ‚Šใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใฎ้›ปไฝใฎๅค‰ๅŒ–ใŒใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎใ‚ฒใƒผใƒˆ้›ปไฝใซๅๆ˜ ใ•ใ‚Œใ‚‹ใ€‚ ย ย Note that the amount of change in the potential of the seventh electrode 4a of the capacitor 4 (gate potential of the driving transistor 2) is the amount of change in the potential of the image signal line Lis, the holding capacity Cs of the capacitor 4, and the EL element capacity Co of the element capacitor 1c. And the ratio (capacity ratio). That is, in the present embodiment, when the potential of the image signal line Lis changes from VdH to Vdata, the gate potential of the driving transistor 2 changes by (Vdataโˆ’VdH) ยท Cs / (Cs + Co). For example, when VdH = 10 V, Vdata = 5 V, and Cs: Co = 1: 2, the potential of the image signal line Lis changes by โˆ’5 V, and the gate potential of the driving transistor 2 is changed from the organic EL element 1 to the capacitor 4. (5-10) ยท 1 / (1 + 2) = โˆ’ 5 / 3V is changed by the movement of the electric charge with respect to. As described above, the change in the potential of the image signal line Lis is reflected in the gate potential of the driving transistor 2 due to the movement of the charge accumulated in the capacitor 4.

โ—‹็ด ๅญๅˆๆœŸๅŒ–ๆœŸ้–“๏ผฐ๏ผ•๏ผš
็ด ๅญๅˆๆœŸๅŒ–ๆœŸ้–“๏ผฐ๏ผ•๏ผˆไปฅไธ‹้ฉๅฎœใ€ŒๆœŸ้–“๏ผฐ๏ผ•ใ€ใจ็•ฅใ™ใ‚‹๏ผ‰ใซใคใ„ใฆใฏใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใŠใ‚ˆใณ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซใใ‚Œใžใ‚Œๆ‰€ๅฎšใฎ่ฒ ้›ปไฝโˆ’๏ผถ๏ฝใŒๅฐๅŠ ใ•ใ‚Œใ€ๅ…จ่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซไฝŽ้›ปไฝ๏ผถ๏ฝ‡๏ผฌใŒๅฐๅŠ ใ•ใ‚Œใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ„๏ผจใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใ€‚ใ“ใฎใจใใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใŒ้žๅฐŽ้€š็Šถๆ…‹ใจใชใ‚Šใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใŒๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ใใ—ใฆใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใจ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใจใฎ้–“ใซ้›ปไฝๅทฎใŒใชใใ€๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใŒ่ฒ ้›ปไฝโˆ’๏ผถ๏ฝใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹ใŸใ‚ใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘๏ผˆใ™ใชใ‚ใก็ด ๅญใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ‘๏ฝƒ๏ผ‰ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใŒใ€๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๆŠœใ‘ใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใŒไธ€ๆŽƒใ•ใ‚Œใ‚‹ใ€‚
โ—‹ Element initialization period P5:
In the element initialization period P5 (hereinafter abbreviated as โ€œperiod P5โ€ as appropriate), a predetermined negative potential โˆ’Vp is applied to the VDD line Lvd and the VSS line Lvs, respectively, and a low potential VgL is applied to all the scanning signal lines Lss. The high potential VdH is applied to the image signal line Lis. At this time, the Vth compensation transistor 3 is turned off and the driving transistor 2 is turned on. Since there is no potential difference between the VDD line Lvd and the VSS line Lvs and the VSS line Lvs is set to the negative potential โˆ’Vp, the charge accumulated in the organic EL element 1 (that is, the element capacitor 1c) is reduced to VSS. The charge accumulated in the organic EL element 1 is wiped out through the line Lvs.

โ—‹็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–๏ผš
ๅ›ณ๏ผ‘๏ผ‘ใงใฏใ€็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–๏ผˆไปฅไธ‹้ฉๅฎœใ€ŒๆœŸ้–“๏ผฐ๏ผ–ใ€ใจ็•ฅใ™ใ‚‹๏ผ‰ใงใฎ็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚ŒใŒไพ‹็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
โ—‹ Light emission period P6:
FIG. 11 illustrates the flow of current in the pixel circuit 7 in the light emission period P6 (hereinafter abbreviated as โ€œperiod P6โ€ where appropriate).

ๆœŸ้–“๏ผฐ๏ผ–ใงใฏใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใซๆญฃใฎ้ซ˜้›ปไฝ๏ผถ๏ผค๏ผคใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ไธ€ๆ–นใงใ€๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใซๅŸบๆบ–้›ปไฝ๏ผ๏ผถใŒๅฐๅŠ ใ•ใ‚Œใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซไฝŽ้›ปไฝ๏ผถ๏ฝ‡๏ผฌใŒๅฐๅŠ ใ•ใ‚Œใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซ้ซ˜้›ปไฝ๏ผถ๏ฝ„๏ผจใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใ€‚ ย ย In the period P6, the positive high potential VDD is applied to the VDD line Lvd, while the reference potential 0V is applied to the VSS line Lvs, the low potential VgL is applied to the scanning signal line Lss, and the high potential is applied to the image signal line Lis. VdH is applied.

ใ“ใฎใจใใ€๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„Ÿ็”จใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ“ใซใคใ„ใฆใฏใ€่ตฐๆŸปไฟกๅท็ทš๏ผฌ๏ฝ“๏ฝ“ใซใŠใ‘ใ‚‹ไฝŽ้›ปไฝ๏ผถ๏ฝ‡๏ผฌใฎๅฐๅŠ ใซใ‚ˆใ‚Šใ€้žๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ไธ€ๆ–นใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซใคใ„ใฆใฏใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฏพใ—ใฆ้ซ˜้›ปไฝ๏ผถ๏ฝ„๏ผจใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใŸใ‚ใ€ๆœŸ้–“๏ผฐ๏ผ”ใซใŠใ„ใฆใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ท้‡๏ผˆ้›ปไฝ๏ผถdataใซๅฟœใ˜ใŸ้›ป่ท้‡๏ผ‰ใซๅฟœใ˜ใŸ้›ปไฝๅˆ†ใ ใ‘๏ผถ๏ฝ‡๏ฝ“ใŒ้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใ‚ˆใ‚Šใ‚‚้ซ˜ใใชใ‚Šใ€ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ ย ย At this time, the Vth compensation transistor 3 becomes non-conductive due to the application of the low potential VgL to the scanning signal line Lss. On the other hand, for the driving transistor 2, since the high potential VdH is applied to the image signal line Lis, only the potential corresponding to the amount of charge accumulated in the capacitor 4 (the amount of charge corresponding to the potential Vdata) in the period P4. Vgs becomes higher than the threshold value Vth, and a conductive state is established.

ไพ‹ใˆใฐใ€๏ผถdata๏ผ๏ผ•๏ผถใ€๏ผฃ๏ฝ“๏ผš๏ผฃ๏ฝ๏ผ๏ผ‘๏ผš๏ผ’ใงใ‚ใ‚‹ๅ ดๅˆใซใฏใ€ๆœŸ้–“๏ผฐ๏ผ”ใซใŠใ„ใฆใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚Œใ‚‹้›ป่ทใŒใ€้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใ‚ˆใ‚Šใ‚‚๏ผ•๏ผ๏ผ“๏ผถใ ใ‘ไฝŽใ„้›ปไฝ๏ผˆ๏ผป๏ผถ๏ฝ”๏ฝˆโˆ’๏ผ•๏ผ๏ผ“๏ผฝ๏ผถ๏ผ‰ใซๅฏพๅฟœใ™ใ‚‹ใ€‚ใใ—ใฆใ€ๆœŸ้–“๏ผฐ๏ผ–ใงใฏใ€็”ปๅƒไฟกๅท็ทš๏ผฌ๏ฝ‰๏ฝ“ใซๅฏพใ—ใฆๆœŸ้–“๏ผฐ๏ผ”ใ‚ˆใ‚Šใ‚‚๏ผถdata๏ผˆ๏ผ๏ผ•๏ผถ๏ผ‰ๅˆ†ใ ใ‘้ซ˜ใ„้›ปไฝใŒๅฐๅŠ ใ•ใ‚Œใ€็ฌฌ๏ผ“้›ปๆฅต๏ผˆใ‚ฒใƒผใƒˆ๏ผ‰๏ผ’๏ฝ‡ใซๅฏพใ—ใฆใ€้–พๅ€ค๏ผถ๏ฝ”๏ฝˆใ‚ˆใ‚Šใ‚‚๏ผ‘๏ผ๏ผ๏ผ“๏ผถใ ใ‘้ซ˜ใ„้›ปไฝ๏ผˆ๏ผป๏ผถ๏ฝ”๏ฝˆ๏ผ‹๏ผ‘๏ผ๏ผ๏ผ“๏ผฝ๏ผถ๏ผ๏ผป๏ผถ๏ฝ”๏ฝˆโˆ’๏ผˆ๏ผ•๏ผ๏ผ“๏ผ‰๏ผ‹๏ผ•๏ผฝ๏ผถ๏ผ‰ใŒๅฐๅŠ ใ•ใ‚Œใ‚‹ใ€‚ ย ย For example, when Vdata = 5V and Cs: Co = 1: 2, the potential accumulated in the capacitor 4 in the period P4 is lower than the threshold value Vth by 5 / 3V ([Vth-5 / 3] V ). In the period P6, a potential higher than the period P4 by Vdata (= 5V) is applied to the image signal line Lis, and the third electrode (gate) 2g is higher by 10 / 3V than the threshold value Vth. A potential ([Vth + 10/3] V = [Vthโˆ’ (5/3) +5] V) is applied.

ใใ—ใฆใ€๏ผถ๏ผค๏ผค็ทš๏ผฌ๏ฝ–๏ฝ„ใŒ๏ผถ๏ผณ๏ผณ็ทš๏ผฌ๏ฝ–๏ฝ“ใ‚ˆใ‚Šใ‚‚้›ปไฝ๏ผถ๏ผค๏ผคๅˆ†ใ ใ‘้ซ˜้›ปไฝใงใ‚ใ‚Šใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใŒ้›ปไฝ๏ผถdataใซๅฟœใ˜ใฆ็ฌฌ๏ผ‘โˆ’็ฌฌ๏ผ’้›ปๆฅต้–“ใง้›ปๆตใŒๆตใ‚Œใ‚‹ๅฐŽ้€š็Šถๆ…‹ใจใชใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€ๅ›ณ๏ผ‘๏ผ‘ใซใŠใ„ใฆ็™ฝๆŠœใใฎ็Ÿขๅฐใง็คบใ™ใ‚ˆใ†ใซใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซๅฏพใ—ใฆ้›ปไฝ๏ผถdataใซๅฟœใ˜ใŸ้›ปๆตใŒๆตใ‚Œใ‚‹ใ€‚ใใฎ็ตๆžœใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒ้›ปไฝ๏ผถdataใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹ใ€‚ใคใพใ‚Šใ€ๆœŸ้–“๏ผฐ๏ผ–ใงใฏใ€ๅ„็”ป็ด ใ‹ใ‚‰็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใฎๅ…‰ใŒๅ‡บๅฐ„ใ•ใ‚Œใ‚‹ใ€‚ ย ย Then, the VDD line Lvd is higher than the VSS line Lvs by the potential VDD, and the driving transistor 2 is in a conductive state in which current flows between the first and second electrodes according to the potential Vdata. For this reason, as indicated by a white arrow in FIG. 11, a current corresponding to the potential Vdata flows through the organic EL element 1. As a result, the organic EL element 1 emits light with a luminance corresponding to the potential Vdata. That is, in the period P6, light having a luminance corresponding to the pixel data signal is emitted from each pixel.

ใ“ใ“ใงใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒ็™บๅ…‰ใ™ใ‚‹้š›ใฎ้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใซ้–ขใ—ใฆใ€๏ผถ๏ฝ‡๏ฝ“๏ผŒ๏ผถ๏ฝ„๏ฝ๏ฝ”๏ฝ๏ผŒ๏ผถ๏ฝ”๏ฝˆใฎ้–“ใซใฏใ€ไธ‹ๅผ๏ผˆ๏ผ‘๏ผ‰ใŒๆˆ็ซ‹ใ™ใ‚‹ใ€‚ ย ย Here, regarding the drive transistor 2 when the organic EL element 1 emits light, the following equation (1) is established between Vgs, Vdata, and Vth.

Figure 2008185808
Figure 2008185808

ไธŠๅผ๏ผˆ๏ผ‘๏ผ‰ใฎ๏ฝ๏ผŒ๏ฝ„ใฏๅฎšๆ•ฐใงใ‚ใ‚‹ใ€‚ ย ย In the above formula (1), a and d are constants.

ใพใŸใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘โˆ’๏ผ’้›ปๆฅต้–“๏ผˆใƒ‰ใƒฌใ‚คใƒณโˆ’ใ‚ฝใƒผใ‚น้–“๏ผ‰ใงๆตใ‚Œใ‚‹้›ปๆตใ‚’๏ผฉ๏ฝ„๏ฝ“ใจใ™ใ‚‹ใจใ€ไธ‹ๅผ๏ผˆ๏ผ’๏ผ‰ใŒๆˆ็ซ‹ใ™ใ‚‹ใ€‚ ย ย Further, when the current flowing between the first and second electrodes (between the drain and source) of the driving transistor 2 is Ids, the following expression (2) is established.

Figure 2008185808
Figure 2008185808

ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰่ผๅบฆใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’ๆตใ‚Œใ‚‹้›ปๆตใฎๅฏ†ๅบฆ๏ผˆ้›ปๆตๅฏ†ๅบฆ๏ผ‰ใซ็•ฅๆฏ”ไพ‹ใ™ใ‚‹ใŸใ‚ใ€ๅ›ณ๏ผ–ใง็คบใ—ใŸ้ง†ๅ‹•ๆณขๅฝขใ‚’็”จใ„ใŸๅˆถๅพกใซใ‚ˆใ‚Šใ€ๅ„็”ป็ด ใซใŠใ„ใฆๆ‰€ๆœ›ใฎ็™บๅ…‰่ผๅบฆใ‚’ๅพ—ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย Since the light emission luminance of the organic EL element 1 is substantially proportional to the density of current flowing through the organic EL element 1 (current density), a desired light emission luminance is obtained in each pixel by control using the drive waveform shown in FIG. be able to.

๏ผœ้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰๏ผž
ๅ›ณ๏ผ‘๏ผ’ใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใŒ้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹ๅ ดๅˆใซใŠใ‘ใ‚‹็™บๅ…‰่ผๅบฆใจๆ™‚้–“็ตŒ้Žใจใฎ้–ขไฟ‚ใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚ใชใŠใ€ๅ›ณ๏ผ‘๏ผ’ใงใฏใ€ๆจช่ปธใŒๆ™‚ๅˆปใ€็ธฆ่ปธใŒ็™บๅ…‰่ผๅบฆใ‚’ใใ‚Œใžใ‚Œ็คบใ—ใฆใŠใ‚Šใ€็™บๅ…‰่ผๅบฆใฎๆ™‚้–“็š„ๅค‰ๅŒ–ใŒๅคช็ทšใง็คบใ•ใ‚Œใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใฎๆบ–ๅ‚™ใ‚’่กŒใ†ๆœŸ้–“๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใซ็›ธๅฝ“๏ผ‰ใซใƒใƒƒใƒใƒณใ‚ฐใŒไป˜ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚
<Normal image display mode>
FIG. 12 is a diagram illustrating the relationship between the light emission luminance and the passage of time when the image display device 1A is set to the normal image display mode. In FIG. 12, the horizontal axis indicates time and the vertical axis indicates light emission luminance, the temporal change in light emission luminance is indicated by a thick line, and the period for preparing the organic EL element 1 for light emission (period in FIG. 6). (Corresponding to P1 to P5) are hatched.

ๅ›ณ๏ผ‘๏ผ’ใง็คบใ™ใ‚ˆใ†ใซใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใซๅฟ…่ฆใช้›ป่ทใฎ่“„็ฉใŒ่กŒใ‚ใ‚Œใ‚‹ๆœŸ้–“๏ผฐ๏ฝ๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใซ็›ธๅฝ“๏ผ‰ใจใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒๅฎŸ้š›ใซ็™บๅ…‰ใ™ใ‚‹ๆœŸ้–“๏ผฐ๏ฝ…๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ–ใซ็›ธๅฝ“๏ผ‰ใจใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใ€‚ ย ย As shown in FIG. 12, a period Pp (corresponding to periods P1 to P5 in FIG. 6) in which charges necessary for light emission of the organic EL element 1 are accumulated and a period Pe (FIG. 12) in which the organic EL element 1 actually emits light. 6 corresponds to the period P6 of 6).

ใคใพใ‚Šใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€ๆœŸ้–“๏ผฐ๏ฝใจๆœŸ้–“๏ผฐ๏ฝ…ใจใซใ‚ˆใฃใฆๆง‹ๆˆใ•ใ‚Œใ‚‹ๆœŸ้–“๏ผˆไปฅไธ‹ใ€Œ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“ใ€ใจใ‚‚็งฐใ™ใ‚‹๏ผ‰๏ผฐ๏ฝ†๏ผ‘ใซใ‚ˆใฃใฆใ€่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใซใŠใ„ใฆ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๅˆ†ใฎ็”ปๅƒ๏ผˆ๏ผ‘ใƒ•ใƒฌใƒผใƒ ็”ปๅƒ๏ผ‰ใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ€‚ใใ—ใฆใ€ใ“ใฎๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใ“ใจใงใ€่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใ€‚ ย ย That is, in the normal image display mode, an image for one frame (one frame image) is displayed on the display unit 200A by a period (hereinafter also referred to as โ€œone frame periodโ€) Pf1 constituted by the period Pp and the period Pe. . Then, the period Pf1 is repeated in time sequence, whereby a plurality of frame images are displayed in time sequence on the display unit 200A.

ใ“ใ“ใงใ€็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–ใซใŠใ‘ใ‚‹๏ผ‘็”ป็ด ใฎๆถˆ่ฒป้›ปๅŠ›ใฏใ€๏ผถ๏ผค๏ผค็ทšใฎ้›ปไฝ๏ผถ๏ผค๏ผคใซๅฏพใ—ใฆใ€้ง†ๅ‹•ใƒˆใƒฉใƒณใ‚ธใ‚นใ‚ฟ๏ผ’ใฎ็ฌฌ๏ผ‘โˆ’๏ผ’้›ปๆฅต้–“ใงๆตใ‚Œใ‚‹้›ปๆต๏ผฉ๏ฝ„๏ฝ“ใ‚’ไน—ใ˜ใŸๅ€ค๏ผˆ๏ผถ๏ผค๏ผคร—๏ผฉ๏ฝ„๏ฝ“๏ผ‰ใงใ‚ใ‚‹ใ€‚ใใ—ใฆใ€ใ„ใ‚ใ‚†ใ‚‹ใƒ‡ใƒฅใƒผใƒ†ใ‚ฃใƒผ๏ผˆ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใ‚’ๅ ใ‚ใ‚‹็™บๅ…‰ๆœŸ้–“๏ผฐ๏ฝ…ใฎๅ‰ฒๅˆ๏ผ‰ใ‚’๏ผคใจใ™ใ‚‹ใจใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใซใŠใ‘ใ‚‹ๅนณๅ‡็š„ใชๆถˆ่ฒป้›ปๅŠ›ใฏใ€๏ผถ๏ผค๏ผคร—๏ผฉ๏ฝ„๏ฝ“ร—๏ผคใจใชใ‚‹ใ€‚ ย ย Here, the power consumption of one pixel in the light emission period P6 is a value (VDD ร— Ids) obtained by multiplying the potential VDD of the VDD line by the current Ids flowing between the first and second electrodes of the drive transistor 2. If the so-called duty (the ratio of the light emission period Pe occupying one frame period Pf1) is D, the average power consumption in one frame period Pf1 is VDD ร— Ids ร— D.

ไธŠ่ฟฐใ—ใŸใ‚ˆใ†ใซใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ„ใฆใฏใ€้ž็™บๅ…‰็Šถๆ…‹ใจ็™บๅ…‰็Šถๆ…‹ใจใŒ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹็‚นๆป…ๅ‹•ไฝœใŒ่กŒใ‚ใ‚Œใ‚‹ใŒใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใฏใ€ไธ€่ˆฌใซใ€๏ผ‘๏ผ๏ผ–๏ผ็ง’็จ‹ๅบฆใจ้žๅธธใซ็Ÿญใ„ๆœŸ้–“ใงใ‚ใ‚‹ใŸใ‚ใ€ไบบ้–“ใฎ็›ฎใซใฏ็‚นๆป…ใ—ใฆใ„ใ‚‹ใ‚ˆใ†ใซใฏ่ฆ‹ใˆใชใ„ใ€‚ใ—ใŸใŒใฃใฆใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ็”ปๅƒใ”ใจใซๅฐ‘ใ—ใšใค็”ปๅƒใŒๅค‰ๅŒ–ใ™ใ‚‹ใจใ€ๆป‘ใ‚‰ใ‹ใซ่ขซๅ†™ไฝ“ใŒ็งปๅ‹•ใ—ใฆใ„ใ‚‹ใ‚ˆใ†ใซ่ฆ‹ใˆใ‚‹ๅ‹•็”ป่กจ็คบใŒๅฎŸ็พใ•ใ‚Œใ‚‹ใ€‚ ย ย As described above, in the normal image display mode, the blinking operation in which the non-light emitting state and the light emitting state are repeated is performed. However, the one frame period Pf1 is generally a very short period of about 1/60 seconds. , It does not appear to blink to the human eye. Therefore, when the image changes little by little for each frame image, a moving image display in which the subject appears to move smoothly is realized.

๏ผœไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰๏ผž
ไธŠ่ฟฐใ—ใŸใ‚ˆใ†ใซใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใŒ็นฐใ‚Š่ฟ”ใ—่กŒใ‚ใ‚Œใ‚‹ใ€‚ใ“ใ‚Œใซๅฏพใ—ใฆใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€ๆ‰€ๅฎšๅ›žๆ•ฐ๏ผˆๅฐ‘ใชใใจใ‚‚๏ผ‘ๅ›žไปฅไธŠ๏ผ‰ใ ใ‘๏ผ‘ใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒ็นฐใ‚Š่ฟ”ใ—ใฆ่กจ็คบใ•ใ‚Œใ‚‹ๆœŸ้–“๏ผˆไปฅไธ‹ใ€Œ่กจ็คบๆœŸ้–“ใ€ใจ็งฐใ™ใ‚‹๏ผ‰ใจใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใฎๆ‰€ๅฎšๆ™‚้–“ใ ใ‘่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใซใŠใ„ใฆ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„๏ผˆใ™ใชใ‚ใก็”ปๅƒใŒๅ…จใ่กจ็คบใ•ใ‚Œใชใ„๏ผ‰ๆœŸ้–“๏ผˆไปฅไธ‹ใ€Œ้ž่กจ็คบๆœŸ้–“ใ€ใจ็งฐใ™ใ‚‹๏ผ‰ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใ€‚ใ“ใฎใ‚ˆใ†ใชๅ‹•ไฝœใซใ‚ˆใ‚Šใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใŒๅ›ณใ‚‰ใ‚Œใฆใ„ใ‚‹ใ€‚
<Low power consumption image display mode>
As described above, in the normal image display mode, one frame period Pf1 is repeatedly performed. On the other hand, in the low power consumption image display mode, a period during which one frame image is repeatedly displayed a predetermined number of times (at least once) (hereinafter referred to as โ€œdisplay periodโ€) and a predetermined period equal to or longer than one frame period Pf1. A period (hereinafter referred to as a โ€œnon-display periodโ€) in which light emission is not performed (that is, no image is displayed at all) on display unit 200A for the time is repeated in time sequence. With such an operation, power consumption is reduced.

ไปฅไธ‹ใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹ๅ ดๅˆใซใŠใ‘ใ‚‹ๅ‹•ไฝœใซใคใ„ใฆ่ชฌๆ˜Žใ™ใ‚‹ใ€‚ ย ย Hereinafter, an operation when the image display mode of the image display apparatus 1A is set to the low power consumption image display mode will be described.

ๅ›ณ๏ผ‘๏ผ“ใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹ๅ ดๅˆใซใŠใ„ใฆๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’็™บๅ…‰ใ•ใ›ใ‚‹้š›ใฎไฟกๅทๆณขๅฝข๏ผˆ้ง†ๅ‹•ๆณขๅฝข๏ผ‰ใ‚’็คบใ™ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใƒใƒฃใƒผใƒˆใงใ‚ใ‚‹ใ€‚ๅ›ณ๏ผ‘๏ผ“ใงใฏใ€ๅ›ณ๏ผ–ใจๅŒๆง˜ใซใ€ๆจช่ปธใŒๆ™‚ๅˆปใ‚’็คบใ—ใ€ไธŠใ‹ใ‚‰้ †ใซใ€(๏ฝ)้›ปไฝ๏ผถ๏ฝ„๏ฝ„ใ€(๏ฝ‚)้›ปไฝ๏ผถ๏ฝ“๏ฝ“ใ€(๏ฝƒ)้›ปไฝ๏ผถ๏ฝŒ๏ฝ“๏ผ‘ใ€(๏ฝ„)้›ปไฝ๏ผถ๏ฝŒ๏ฝ“๏ผ’ใ€(๏ฝ…)้›ปไฝ๏ผถ๏ฝŒ๏ฝ‰๏ฝ“ใ€ใฎๆณขๅฝขใŒ็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย FIG. 13 is a timing chart showing signal waveforms (drive waveforms) when the organic EL element 1 emits light when the image display mode of the image display device 1A is set to the low power consumption image display mode. In FIG. 13, as in FIG. 6, the horizontal axis indicates time, and in order from the top, (a) potential Vdd, (b) potential Vss, (c) potential Vls <b> 1, (d) potential Vls <b> 2, (e) potential Vlis. , Waveforms are shown.

ๅ›ณ๏ผ‘๏ผ“ใงใฏใ€่กจ็คบๆœŸ้–“ใจ้ž่กจ็คบๆœŸ้–“ใจใŒๅˆ‡ใ‚Šๆ›ฟใ‚ใ‚‹ๅ‰ๅพŒใซใŠใ‘ใ‚‹้ง†ๅ‹•ๆณขๅฝขใŒ็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ๅ…ทไฝ“็š„ใซใฏใ€ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ‘ใ€œ๏ฝ”๏ผ‘๏ผ—ใซใคใ„ใฆใฏใ€ๅ›ณ๏ผ–ใง็คบใ—ใŸใ‚‚ใฎใจๅŒๆง˜ใช้ง†ๅ‹•ๆณขๅฝขใŒ็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ไธ€ๆ–นใ€ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ—ไปฅ้™ใงใฏใ€๏ผ•ใคใฎ้›ปไฝ๏ผถ๏ฝ„๏ฝ„๏ผŒ๏ผถ๏ฝ“๏ฝ“๏ผŒ๏ผถ๏ฝŒ๏ฝ“๏ผ‘๏ผŒ๏ผถ๏ฝŒ๏ฝ“๏ผ’๏ผŒ๏ผถ๏ฝŒ๏ฝ‰๏ฝ“ใŒๅ…จใฆๅŸบๆบ–้›ปไฝ๏ผˆ๏ผ๏ผถ๏ผ‰ใซ่จญๅฎšใ•ใ‚Œใ€็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ„ใฆ้›ป่ทใฎ็งปๅ‹•ใŒ่ตทใ“ใ‚‰ใชใ„็Šถๆ…‹๏ผˆ็„ก้ง†ๅ‹•็Šถๆ…‹๏ผ‰ใจใชใ‚‹ใ€‚ใ™ใชใ‚ใกๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒ็™บๅ…‰ใ›ใšใ€็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใชใ„ๆœŸ้–“๏ผˆ้ž่กจ็คบๆœŸ้–“๏ผ‰๏ผฐ๏ฝใจใชใ‚‹ใ€‚ใชใŠใ€ๅ›ณ๏ผ‘๏ผ“ใง็คบใ™ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ—ใ€œ๏ฝ”๏ผ‘๏ผ˜ใฏใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใจๅŒใ˜้•ทใ•ใฎๆœŸ้–“ใ‚’็คบใ—ใฆใŠใ‚Šใ€ใ“ใ“ใงใฏใ€ไธ€ไพ‹ใจใ—ใฆใ€้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝใŒ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใ‚ˆใ‚Šใ‚‚้•ทใ„ๅ ดๅˆใŒ็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย FIG. 13 shows driving waveforms before and after switching between the display period and the non-display period. Specifically, the drive waveforms similar to those shown in FIG. 6 are shown at times t11 to t17. On the other hand, after time t17, the five potentials Vdd, Vss, Vls1, Vls2, and Vlis are all set to the reference potential (0 V), and the pixel circuit 7 enters a state where no charge movement occurs (no drive state). That is, it is a period (non-display period) Pm in which the organic EL element 1 does not emit light and no image is displayed. Note that the times t17 to t18 shown in FIG. 13 indicate a period having the same length as the one frame period Pf1, and here, as an example, the case where the non-display period Pm is longer than the one frame period Pf1 is shown. Yes.

ๅ›ณ๏ผ‘๏ผ”ใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹ๅ ดๅˆใซใŠใ‘ใ‚‹็™บๅ…‰่ผๅบฆใจๆ™‚้–“็ตŒ้Žใจใฎ้–ขไฟ‚ใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚ใชใŠใ€ๅ›ณ๏ผ‘๏ผ”ใงใฏใ€ๅ›ณ๏ผ‘๏ผ’ใจๅŒๆง˜ใซใ€ๆจช่ปธใŒๆ™‚ๅˆปใ€็ธฆ่ปธใŒ็™บๅ…‰่ผๅบฆใ‚’ใใ‚Œใžใ‚Œ็คบใ—ใฆใŠใ‚Šใ€็™บๅ…‰่ผๅบฆใฎๆ™‚้–“็š„ๅค‰ๅŒ–ใŒๅคช็ทšใง็คบใ•ใ‚Œใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใฎๆบ–ๅ‚™ใ‚’่กŒใ†ๆœŸ้–“๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใซ็›ธๅฝ“๏ผ‰ใซใƒใƒƒใƒใƒณใ‚ฐใŒไป˜ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย FIG. 14 is a diagram illustrating the relationship between the light emission luminance and the passage of time when the image display mode of the image display device 1A is set to the low power consumption image display mode. In FIG. 14, as in FIG. 12, the horizontal axis indicates time and the vertical axis indicates light emission luminance, and the temporal change in the light emission luminance is indicated by a thick line, and the organic EL element 1 is prepared for light emission. The periods (corresponding to the periods P1 to P5 in FIG. 6) are hatched.

ๅ›ณ๏ผ‘๏ผ”ใง็คบใ™ใ‚ˆใ†ใซใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใซๅฟ…่ฆใช้›ป่ทใฎ่“„็ฉใŒ่กŒใ‚ใ‚Œใ‚‹ๆœŸ้–“๏ผฐ๏ฝ๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใซ็›ธๅฝ“๏ผ‰ใจใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒๅฎŸ้š›ใซ็™บๅ…‰ใ™ใ‚‹ๆœŸ้–“๏ผฐ๏ฝ…๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ–ใซ็›ธๅฝ“๏ผ‰ใจใŒๆ™‚้–“้ †ๆฌกใซ่ค‡ๆ•ฐๅ›ž๏ผˆใ“ใ“ใงใฏ๏ผ“ๅ›ž๏ผ‰็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹่กจ็คบๆœŸ้–“๏ผฐ๏ฝใจใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใฎๆ‰€ๅฎšๅ€๏ผˆใ“ใ“ใงใฏ๏ผ“ๅ€๏ผ‰ใฎ้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใจใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใ€‚ ย ย As shown in FIG. 14, a period Pp (corresponding to periods P1 to P5 in FIG. 6) in which charges necessary for light emission of the organic EL element 1 are accumulated and a period Pe (FIG. 14) in which the organic EL element 1 actually emits light. 6) (corresponding to the period P6 of 6) is time-sequentially a display period Pa that is repeated a plurality of times (here, three times) and a non-display period Pb that is a predetermined multiple (three times here) of one frame period Pf1. Repeated.

ไปฅไธŠใฎใ‚ˆใ†ใซใ€็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใงใฏใ€ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใจใ€ๅ„็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ„ใฆๆ›ธ่พผๆœŸ้–“๏ผฐ๏ผ”ใ‚„็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–ใจใ‚’ๅ‚™ใˆใฆๆง‹ๆˆใ•ใ‚ŒใŸๅฐ‘ใชใใจใ‚‚๏ผ‘ไปฅไธŠใฎ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใ‹ใ‚‰ใชใ‚‹่กจ็คบๆœŸ้–“๏ผฐ๏ฝใจใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใฎๆœŸ้–“ใงใ‚ใ‚‹้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใฎๅˆ†ใ ใ‘ๆถˆ่ฒป้›ปๅŠ›ใŒไฝŽๆธ›ใ•ใ‚Œใ‚‹ใŒใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝใซใŠใ‘ใ‚‹่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฏไฝŽไธ‹ใ—ใชใ„ใ€‚ ย ย As described above, when the image display device 1A according to the first embodiment is set to the low power consumption image display mode at a predetermined timing, each pixel circuit 7 includes the writing period P4 and the light emission period P6. A display period Pa composed of at least one frame period Pf1 and a non-display period Pb that is one frame period Pf1 or more are repeated in time sequence. For this reason, the power consumption is reduced by the non-display period Pb, but the contrast of the display image in the display period Pa is not lowered.

ใ‚ˆใ‚Š่ฉณ็ดฐใซใฏใ€็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ๆœŸ้–“ใจ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใชใ„ๆœŸ้–“ใจใ‚’ไบคไบ’ใซ่จญใ‘ใ‚‹ใ“ใจใงใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ใ“ใฎใ‚ˆใ†ใช่กจ็คบๆ…‹ๆง˜ใงใฏใ€่กจ็คบ็”ป้ขใŒ็‚นๆป…ใ™ใ‚‹ใ‚ˆใ†ใซ่ฆ–่ชใ•ใ‚Œใ‚‹ใŒใ€ใƒฆใƒผใ‚ถใƒผใŒใ€้›ปๅญใƒกใƒผใƒซใฎ่กจ็คบ็”ป้ขใชใฉใจใ„ใฃใŸ้™ๆญข็”ปใ‚’่ฆ‹ใ‚‹้š›ใซใฏใ€็‰นใซใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚‚ใชใใ€่กจ็คบ็”ปๅƒใฎๅ†…ๅฎนใ‚‚ๆŠŠๆกๅฏ่ƒฝใงใ‚ใ‚‹ใ€‚ ย ย More specifically, power consumption can be reduced by alternately providing a period during which an image is displayed and a period during which no image is displayed. In such a display mode, the display screen is viewed as blinking. However, when the user views a still image such as an e-mail display screen, the content of the display image is grasped without any particular decrease in contrast. Is possible.

ใใ—ใฆใ€ไธ€่ˆฌ็š„ใชใƒฆใƒผใ‚ถใƒผใฎใƒ‹ใƒผใ‚บใ‹ใ‚‰ใ™ใ‚Œใฐใ€ๅฐ‘ใ€…่กจ็คบ็”ปๅƒใŒ่ฆ‹้›ฃใใฆใ‚‚ใ€ใƒใƒƒใƒ†ใƒชใƒผๅˆ‡ใ‚Œใง็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใŒไฝฟ็”จไธๅฏ่ƒฝใช็Šถๆ…‹ใจใชใ‚‰ใชใ„ใ“ใจใŒ้‡่ฆใจ่จ€ใˆใ€็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฏใ€ไธ€่ˆฌ็š„ใชใƒฆใƒผใ‚ถใƒผใฎใƒ‹ใƒผใ‚บใซๅๅˆ†ๅฟœใˆใŸใ‚‚ใฎใจ่จ€ใˆใ‚‹ใ€‚ ย ย According to the needs of general users, it can be said that it is important that the image display device does not become unusable due to running out of battery even if the display image is a little difficult to see. The image display device according to the first embodiment It can be said that 1A sufficiently meets the needs of general users.

ใ—ใŸใŒใฃใฆใ€็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใงใฏใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย Therefore, in the image display device 1A according to the first embodiment, it is possible to reduce power consumption while preventing a decrease in contrast of a display image.

ใพใŸใ€ใƒใƒƒใƒ†ใƒชใƒผ๏ผ‘๏ผ’๏ผใฎ่“„้›ป้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใจใชใฃใŸๅ ดๅˆใซใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€ใƒใƒƒใƒ†ใƒชใƒผๅˆ‡ใ‚Œใซใ‚ˆใฃใฆ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใŒไฝฟ็”จใงใใชใใชใ‚‹ใจใ„ใฃใŸไธๅ…ทๅˆใ‚’ๅ›ž้ฟใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย Further, when the amount of power stored in the battery 120 is equal to or less than a predetermined amount, the image display mode of the image display device 1A is set to the low power consumption image display mode. For this reason, it is possible to avoid the problem that the image display apparatus 1A cannot be used due to the battery running out.

ใชใŠใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ„ใฆ่กจ็คบๆœŸ้–“๏ผฐ๏ฝใจ้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ…ใจใŒ็นฐใ‚Š่ฟ”ใ—่กŒใ‚ใ‚Œใ‚‹ๅ‘จๆœŸ๏ผˆไพ‹ใˆใฐใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝใŒ้–‹ๅง‹ใ•ใ‚Œใ‚‹ๅ‘จๆœŸ๏ผ‰ใซใคใ„ใฆใฏใ€ใƒฆใƒผใ‚ถใฎๆ“ไฝœๆ€งใชใฉใ‚’่€ƒๆ…ฎใ™ใ‚‹ใจใ€ใƒฆใƒผใ‚ถใŒ่กจ็คบ็”ปๅƒใฎๅ†…ๅฎนใ‚’่ฆ–่ชใ™ใ‚‹ใ“ใจใŒใงใใ‚‹็จ‹ๅบฆใซ็Ÿญใใ™ใ‚‹ๅฟ…่ฆๆ€งใŒใ‚ใ‚‹ใ€‚ใใฎไธ€ๆ–นใงใ€ใƒฆใƒผใ‚ถใซไธๅฟซใชใกใ‚‰ใคใใ‚’ๆ„Ÿใ˜ใ•ใ›ใชใ„็จ‹ๅบฆใซ้•ทใใ™ใ‚‹ๅฟ…่ฆๆ€งใŒใ‚ใ‚‹ใ€‚ใ—ใŸใŒใฃใฆใ€ๅฝ“่ฉฒๅ‘จๆœŸใฏใ€ไพ‹ใˆใฐ๏ผ๏ผŽ๏ผ’๏ผ•ใ€œ๏ผ‘๏ผ๏ผจ๏ฝš็จ‹ๅบฆใŒๅฅฝ้ฉใงใ‚ใ‚‹ใ€‚ใพใŸใ€๏ผ‘ๅ‘จๆœŸใฎๆœŸ้–“ใ‚’ๅ ใ‚ใ‚‹่กจ็คบๆœŸ้–“๏ผฐ๏ฝใซใคใ„ใฆใฏใ€ใƒฆใƒผใ‚ถใŒ่กจ็คบ็”ปๅƒใฎๆฎ‹ๅƒใ‚’่ฆ–่ชใ™ใ‚‹ใ“ใจใŒใงใใ‚‹็จ‹ๅบฆใซ้•ทใใ™ใ‚‹ๅฟ…่ฆๆ€งใŒใ‚ใ‚‹ใ€‚ใ—ใŸใŒใฃใฆใ€๏ผ‘ๅ‘จๆœŸใฎๆœŸ้–“ใ‚’ๅ ใ‚ใ‚‹่กจ็คบๆœŸ้–“๏ผฐ๏ฝใฎๆฏ”็އใจใ—ใฆใฏใ€ไพ‹ใˆใฐ๏ผ•ใ€œ๏ผ˜๏ผ๏ผ…็จ‹ๅบฆใŒๅฅฝ้ฉใงใ‚ใ‚‹ใ€‚ ย ย Note that the period in which the display period Pa and the non-display period Pe are repeatedly performed in the low power consumption image display mode (for example, the period in which the display period Pa starts) is displayed by the user in consideration of user operability and the like. There is a need to shorten the image content to such an extent that it can be visually recognized. On the other hand, it is necessary to make the length long enough not to make the user feel unpleasant flicker. Accordingly, the period is preferably about 0.25 to 10 Hz, for example. In addition, the display period Pa that occupies one period needs to be long enough for the user to visually recognize the afterimage of the display image. Accordingly, the ratio of the display period Pa occupying one period is preferably about 5 to 80%, for example.

๏ผœ็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹๏ผž
็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใงใฏใ€ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝใจ้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใจใŒ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€็‚นๆป…ใ™ใ‚‹ใ‚ˆใ†ใชๆ…‹ๆง˜ใง็”ปๅƒ่กจ็คบใ‚’่กŒใ†ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใ“ใจใงใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใฃใŸใ€‚ใ“ใ‚Œใซๅฏพใ—ใฆใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใงใฏใ€็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใจๆฏ”่ผƒใ—ใฆ็‰ฉ็†็š„ใชๆง‹ๆˆใซใคใ„ใฆใฏๅŒๆง˜ใงใ‚ใ‚‹ใŒใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚ŒใŸๅ ดๅˆใŠใ‘ใ‚‹่กจ็คบๆœŸ้–“๏ผฐ๏ฝใฎ้ง†ๅ‹•ๅˆถๅพกใ‚’ๅค‰ๆ›ดใ™ใ‚‹ใ“ใจใซใ‚ˆใ‚Šใ€ใƒ‡ใƒฅใƒผใƒ†ใ‚ฃใƒผใ‚’ๅ‘ไธŠใ•ใ›ใŸ่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใจใ™ใ‚‹ใ“ใจใงใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใฃใฆใ„ใ‚‹ใ€‚
Second Embodiment
In the image display apparatus 1A according to the first embodiment, the display period Pa and the non-display period Pb are repeated at a predetermined timing, and the low power consumption image display mode in which the image is displayed in a blinking manner is set. As a result, the power consumption was reduced while preventing the contrast of the display image from being lowered. In contrast, the image display device 1B according to the second embodiment has the same physical configuration as the image display device 1A according to the first embodiment, but is set to the low power consumption image display mode. By changing the drive control of the display period Pa in this case, the display period Pa โ€ฒ is improved in duty, thereby reducing the power consumption while preventing the contrast of the display image from being lowered.

ไปฅไธ‹ใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใซใคใ„ใฆใ€็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใจ็•ฐใชใ‚‹็‚น๏ผˆใ™ใชใ‚ใกใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซไฟ‚ใ‚‹ๅˆถๅพกใจๅ‹•ไฝœ๏ผ‰ใซใคใ„ใฆไธปใซ่ชฌๆ˜Žใ™ใ‚‹ใ€‚ใชใŠใ€ๅ›ณ๏ผ’ใง็คบใ™ใ‚ˆใ†ใซใ€็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผกใจ็•ฐใชใ‚‹ๅˆถๅพกใซไฟ‚ใ‚‹้ƒจๅˆ†ใ€ใ™ใชใ‚ใกๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผกใŠใ‚ˆใณ่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผกใซใคใ„ใฆใฏใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผขใŠใ‚ˆใณ่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผขใจๅฝขๅผ็š„ใซ็ฌฆๅทใ‚’ๅค‰ๆ›ดใ—ใฆใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใซใคใ„ใฆ่ชฌๆ˜Žใ™ใ‚‹ใ€‚ ย ย Hereinafter, the difference between the image display device 1B according to the second embodiment and the image display device 1A according to the first embodiment (that is, control and operation according to the low power consumption image display mode) will be mainly described. As shown in FIG. 2, portions related to control different from the image display device 1A according to the first embodiment, that is, the control unit 210A and the display unit 200A are formally coded as the control unit 210B and the display unit 200B. The image display device 1B according to the second embodiment will be described by changing.

ๅ›ณ๏ผ‘๏ผ•ใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚ŒใŸๅ ดๅˆใซใŠใ„ใฆๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’็™บๅ…‰ใ•ใ›ใ‚‹้š›ใฎไฟกๅทๆณขๅฝข๏ผˆ้ง†ๅ‹•ๆณขๅฝข๏ผ‰ใ‚’็คบใ™ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใƒใƒฃใƒผใƒˆใงใ‚ใ‚‹ใ€‚ๅ›ณ๏ผ‘๏ผ•ใงใฏใ€ๅ›ณ๏ผ–ใŠใ‚ˆใณๅ›ณ๏ผ‘๏ผ“ใจๅŒๆง˜ใซใ€ๆจช่ปธใŒๆ™‚ๅˆปใ‚’่กจใ—ใ€ไธŠใ‹ใ‚‰้ †ใซใ€(๏ฝ)้›ปไฝ๏ผถ๏ฝ„๏ฝ„ใ€(๏ฝ‚)้›ปไฝ๏ผถ๏ฝ“๏ฝ“ใ€(๏ฝƒ)้›ปไฝ๏ผถ๏ฝŒ๏ฝ“๏ผ‘ใ€(๏ฝ„)้›ปไฝ๏ผถ๏ฝŒ๏ฝ“๏ผ’ใ€(๏ฝ…)้›ปไฝ๏ผถ๏ฝŒ๏ฝ‰๏ฝ“ใ€ใฎๆณขๅฝขใŒ็คบใ•ใ‚ŒใฆใŠใ‚Šใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใฎ่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใซใŠใ‘ใ‚‹้ง†ๅ‹•ๆณขๅฝขใŒ็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย FIG. 15 is a timing chart showing signal waveforms (drive waveforms) when the organic EL element 1 emits light when the image display mode of the image display device 1B is set to the low power consumption image display mode. In FIG. 15, as in FIGS. 6 and 13, the horizontal axis represents time, and in order from the top, (a) potential Vdd, (b) potential Vss, (c) potential Vls1, (d) potential Vls2, (e ) A waveform of the potential Vlis is shown, and a driving waveform in the display period Pa โ€ฒ of the second embodiment is shown.

ๅ›ณ๏ผ‘๏ผ•ใง็คบใ™ใ‚ˆใ†ใซใ€ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ‘ใ€œ๏ฝ”๏ผ‘๏ผ—ใซใคใ„ใฆใฏใ€ๅ›ณ๏ผ–ใง็คบใ—ใŸใ‚‚ใฎใจๅŒๆง˜ใช้ง†ๅ‹•ๆณขๅฝขใจใชใ‚‹ใ€‚ใ“ใ‚Œใซๅฏพใ—ใฆใ€ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ—ไปฅ้™ใงใฏใ€ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ–ใ€œ๏ฝ”๏ผ‘๏ผ—ใซใŠใ‘ใ‚‹๏ผ•ใคใฎ้›ปไฝ๏ผถ๏ฝ„๏ฝ„๏ผŒ๏ผถ๏ฝ“๏ฝ“๏ผŒ๏ผถ๏ฝŒ๏ฝ“๏ผ‘๏ผŒ๏ผถ๏ฝŒ๏ฝ“๏ผ’๏ผŒ๏ผถ๏ฝŒ๏ฝ‰๏ฝ“ใŒใใฎใพใพ็ถญๆŒใ•ใ‚Œใ‚‹ใ€‚ใ™ใชใ‚ใกใ€ๆœŸ้–“๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใพใงใฎๅ‡ฆ็†ใงใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใซๅฟœใ˜ใŸๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใŒใ€ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ–ใ€œ๏ฝ”๏ผ‘๏ผ—ใ ใ‘ใงใชใใ€ใใฎๅพŒใ‚‚็ถญๆŒใ•ใ‚Œใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใฎๆœŸ้–“ใซใ‚ใŸใฃใฆๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒ็™บๅ…‰ใ™ใ‚‹็Šถๆ…‹ใŒไฟๆŒใ•ใ‚Œใ‚‹ใ€‚ ย ย As shown in FIG. 15, the driving waveforms at times t11 to t17 are the same as those shown in FIG. 6. On the other hand, after time t17, the five potentials Vdd, Vss, Vls1, Vls2, and Vlis at times t16 to t17 are maintained as they are. That is, the light emission of the organic EL element 1 corresponding to the electric charge accumulated in the capacitor 4 in the processing from the periods P1 to P5 is maintained not only at the times t16 to t17 but also after that, and is organic over a period of one frame period Pf1 or more. The state where the EL element 1 emits light is maintained.

ใคใพใ‚Šใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใฎ่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใงใฏใ€๏ผ‘ๅ›žใฎใƒ‡ใƒผใ‚ฟๆ›ธ่พผๅ‡ฆ็†ใŒ่กŒใ‚ใ‚Œใ‚‹ใจใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ„ใฆ๏ผ‘ใคใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใฎๆœŸ้–“๏ผฐ๏ผ–๏ผขใซใ‚ใŸใฃใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰็Šถๆ…‹ใŒไฟๆŒใ•ใ‚Œใ‚‹ใ€‚ใชใŠใ€ๅ›ณ๏ผ‘๏ผ•ใง็คบใ™ๆ™‚ๅˆป๏ฝ”๏ผ‘๏ผ—ใ€œ๏ฝ”๏ผ‘๏ผ˜ใฏใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใจๅŒใ˜้•ทใ•ใฎๆœŸ้–“ใ‚’็คบใ—ใฆใŠใ‚Šใ€ใ“ใ“ใงใฏใ€ไธ€ไพ‹ใจใ—ใฆใ€็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–๏ผขใŒ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใ‚ˆใ‚Šใ‚‚้•ทใ„ๅ ดๅˆใŒ็คบใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย That is, in the display period Pa โ€ฒ of the second embodiment, when one data writing process is performed, the organic EL is performed over a period P6B of one frame period Pf1 or more in which one frame image is displayed in the normal image display mode. The light emission state of the element 1 is maintained. Note that the times t17 to t18 shown in FIG. 15 indicate the same period as the one frame period Pf1, and here, as an example, the case where the light emission period P6B is longer than the one frame period Pf1 is shown. .

ใ“ใฎใ‚ˆใ†ใซใ€๏ผ‘ๅ›žใฎใƒ‡ใƒผใ‚ฟๆ›ธ่พผๅ‡ฆ็†ใซๅฏพใ™ใ‚‹็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–๏ผขใŒ้€šๅธธใฎ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใจ้•ทใใชใ‚‹ใจใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใซใŠใ‘ใ‚‹ใƒ‡ใƒฅใƒผใƒ†ใ‚ฃใƒผใŒๅ‘ไธŠใ™ใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใซใŠใ‘ใ‚‹ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็žฌ้–“่ผๅบฆ๏ผˆใ™ใชใ‚ใกๆ™‚้–“ๅฝ“ใŸใ‚Šใฎ็™บๅ…‰่ผๅบฆ๏ผ‰ใ‚’ไฝŽๆธ›ใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ใใฎ็ตๆžœใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใซ็žฌ้–“็š„ใซๆตใ‚Œใ‚‹้›ปๆตใฎๅฏ†ๅบฆใŒไฝŽๆธ›ใ•ใ‚Œใ‚‹ใŸใ‚ใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ้•ทๅฏฟๅ‘ฝๅŒ–ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ€ใพใŸ้›ปๅœงใ‚’ๅฐใ•ใใงใใ‚‹ใฎใงๆถˆ่ฒป้›ปๅŠ›ใ‚’ไฝŽๆธ›ใงใใ‚‹ใ€‚็žฌ้–“่ผๅบฆใ‚’ไฝŽๆธ›ใ™ใ‚‹ใซใฏใ€๏ผถ๏ผค๏ผค็ทšใฎ้›ปไฝใ‚’ไธ‹ใ’ใ‚‹ใ€ใพใŸใฏใƒ‡ใƒผใ‚ฟไฟกๅทใฎ้šŽ่ชฟใ‚’ไธ‹ใ’ใ‚‹็ญ‰ใฎๆ–นๆณ•ใŒใ‚ใ‚‹ใ€‚ ย ย Thus, when the light emission period P6B for one data writing process becomes longer than the normal one frame period Pf1, the duty in the display period Pa 'is improved. For this reason, the instantaneous luminance (that is, the light emission luminance per time) of the organic EL element 1 in the display period Pa โ€ฒ can be reduced. As a result, since the density of the current that flows instantaneously in the organic EL element 1 is reduced, the life of the organic EL element 1 can be extended, and the voltage can be reduced, so that power consumption can be reduced. In order to reduce the instantaneous luminance, there are methods such as lowering the potential of the VDD line or lowering the gradation of the data signal.

ๅ›ณ๏ผ‘๏ผ–ใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚ŒใŸๅ ดๅˆใŠใ‘ใ‚‹็™บๅ…‰่ผๅบฆใจๆ™‚้–“็ตŒ้Žใจใฎ้–ขไฟ‚ใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚ใชใŠใ€ๅ›ณ๏ผ‘๏ผ–ใงใฏใ€ๅ›ณ๏ผ‘๏ผ’ใŠใ‚ˆใณๅ›ณ๏ผ‘๏ผ”ใจๅŒๆง˜ใซใ€ๆจช่ปธใŒๆ™‚ๅˆปใ€็ธฆ่ปธใŒ็™บๅ…‰่ผๅบฆใ‚’ใใ‚Œใžใ‚Œ็คบใ—ใฆใŠใ‚Šใ€็™บๅ…‰่ผๅบฆใฎๆ™‚้–“็š„ๅค‰ๅŒ–ใŒๅคช็ทšใง็คบใ•ใ‚Œใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใฎๆบ–ๅ‚™ใ‚’่กŒใ†ๆœŸ้–“๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใซ็›ธๅฝ“๏ผ‰ใซใƒใƒƒใƒใƒณใ‚ฐใŒไป˜ใ•ใ‚Œใฆใ„ใ‚‹ใ€‚ ย ย FIG. 16 is a diagram illustrating the relationship between the light emission luminance and the passage of time when the image display mode of the image display device 1B is set to the low power consumption image display mode. In FIG. 16, as in FIGS. 12 and 14, the horizontal axis indicates time, and the vertical axis indicates light emission luminance. The temporal change in light emission luminance is indicated by a thick line, and the light emission of the organic EL element 1 is shown. The period during which preparation is performed (corresponding to periods P1 to P5 in FIG. 6) is hatched.

ๅ›ณ๏ผ‘๏ผ–ใง็คบใ™ใ‚ˆใ†ใซใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใฏใ€ๆ™‚ๅˆป๏ผด๏ผใ€œ๏ผด๏ผ‘ใซใŠใ„ใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใซๅฟ…่ฆใช้›ป่ทใฎ่“„็ฉใŒ่กŒใ‚ใ‚Œใ‚‹ๆœŸ้–“๏ผฐ๏ฝ๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใซ็›ธๅฝ“๏ผ‰ใจใ€ๆ™‚ๅˆป๏ผด๏ผ‘ใ€œ๏ผด๏ผ’ใซใŠใ„ใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒๅฎŸ้š›ใซ็™บๅ…‰ใ™ใ‚‹๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠ๏ผˆใ“ใ“ใงใฏ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใฎ๏ผ”ๅ€ไปฅไธŠ๏ผ‰ใฎๆœŸ้–“๏ผฐ๏ฝ…โ€™๏ผˆๅ›ณ๏ผ–ใฎๆœŸ้–“๏ผฐ๏ผ–ใซ็›ธๅฝ“๏ผ‰ใจใ‚’ๆœ‰ใ™ใ‚‹ใ€‚ใคใพใ‚Šใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใงใฏใ€๏ผ‘ๅ›žใฎใƒ‡ใƒผใ‚ฟๆ›ธ่พผๅ‡ฆ็†ใซๅฏพใ—ใฆ๏ผ”ๅ›žไปฅไธŠใฎๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใ‚‹ใ“ใจใจ็ญ‰ใ—ใ„็Šถๆ…‹ใŒๅฎŸ็พใ•ใ‚Œใ‚‹ใ€‚ ย ย As shown in FIG. 16, the display period Pa โ€ฒ includes a period Pp (corresponding to the periods P1 to P5 in FIG. 6) in which charges necessary for light emission of the organic EL element 1 are accumulated at the times T0 to T1, and the time From T1 to T2, the organic EL element 1 has a period Pe โ€ฒ (corresponding to the period P6 in FIG. 6) of one frame period Pf1 or more (here, four times or more of the one frame period Pf1) in which light is actually emitted. That is, in the display period Pa โ€ฒ, a state equivalent to the light emission of the organic EL element 1 four times or more for one data writing process is realized.

ใพใŸใ€้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใฏใ€ๅ›ณ๏ผ‘๏ผ”ใจๅŒๆง˜ใซ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠ๏ผˆใ“ใ“ใงใฏ๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใฎ๏ผ“ๅ€๏ผ‰ใฎๆœŸ้–“ใจใชใฃใฆใ„ใ‚‹ใ€‚ ย ย Further, the non-display period Pb is a period equal to or longer than one frame period Pf1 (here, three times the one frame period Pf1) as in FIG.

ใใ—ใฆใ€ใ“ใฎใ‚ˆใ†ใช่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใจ้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใจใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใ“ใจใงใ€่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผขใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ€‚ ย ย Then, such a display period Pa 'and a non-display period Pb are repeated in time sequence, whereby an image is displayed on the display unit 200B.

ใพใŸใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใงใฏใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ใฎ๏ผ•ๅ€ใฎๆœŸ้–“๏ผˆๆ™‚ๅˆป๏ผด๏ผใ€œ๏ผด๏ผ’๏ผ‰ใซใŠใ„ใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใซๅฟ…่ฆใช้›ป่ทใฎ่“„็ฉใ‚’่กŒใ†ๅ‡ฆ็†ใŒ๏ผ‘ๅ›žใ—ใ‹่กŒใ‚ใ‚Œใš๏ผˆๆ™‚ๅˆป๏ผด๏ผใ€œ๏ผด๏ผ‘๏ผ‰ใ€ใใฎไป–ใฎๆœŸ้–“๏ผˆๆ™‚ๅˆป๏ผด๏ผ‘ใ€œ๏ผด๏ผ’๏ผ‰ใซใŠใ„ใฆๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใŒ็™บๅ…‰็Šถๆ…‹ใซ็ถญๆŒใ•ใ‚Œใ‚‹ใ€‚ ย ย In the display period Pa โ€ฒ, the process for accumulating charges necessary for light emission of the organic EL element 1 is performed only once (time T0 to T2) in a period (time T0 to T2) five times the one frame period Pf1. T1), the organic EL element 1 is maintained in a light emitting state in other periods (time T1 to T2).

ใ“ใฎใŸใ‚ใ€ๅ›ณ๏ผ‘๏ผ–ใง็คบใ•ใ‚Œใฆใ„ใ‚‹้ง†ๅ‹•ๆณขๅฝขใฎๅ ดๅˆใซใฏใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใฎ่กจ็คบๆœŸ้–“๏ผฐ๏ฝใซใŠใ‘ใ‚‹ใƒ‡ใƒฅใƒผใƒ†ใ‚ฃใƒผใŒ๏ผ๏ผŽ๏ผ”ใงใ‚ใฃใŸใจใ™ใ‚‹ใจใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใซใŠใ‘ใ‚‹ใƒ‡ใƒฅใƒผใƒ†ใ‚ฃใƒผใฏใ€๏ผ๏ผŽ๏ผ˜๏ผ˜๏ผˆ๏ผ๏ผป๏ผ๏ผŽ๏ผ”๏ผ‹๏ผ”๏ผฝ๏ผ๏ผ•๏ผ‰ใจใชใ‚‹ใ€‚ใคใพใ‚Šใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใงใฏใ€็žฌ้–“็š„ใช็™บๅ…‰่ผๅบฆ๏ผข๏ฝ”๏ฝ‚ใ‚’ใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝใซใŠใ‘ใ‚‹็žฌ้–“็š„ใช็™บๅ…‰่ผๅบฆ๏ผข๏ฝ”๏ผˆๅ›ณ๏ผ‘๏ผ–ไธญใฎๅคช็ ด็ทš๏ผ‰ใฎ๏ผ๏ผŽ๏ผ”๏ผ•๏ผˆ๏ผ๏ผ๏ผŽ๏ผ”๏ผ๏ผ๏ผŽ๏ผ˜๏ผ˜๏ผ‰ๅ€ใจใ™ใ‚Œใฐใ€ใƒฆใƒผใ‚ถใƒผใฎ็œผใซใฏๅŒใ˜ๆ˜Žใ‚‹ใ•ใ€ใŠใ‚ˆใณๅŒใ˜ใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎ็”ปๅƒใจใ—ใฆ่ฆ–่ชใ•ใ‚Œใ‚‹ใ€‚ ย ย For this reason, in the case of the drive waveform shown in FIG. 16, if the duty in the display period Pa in the normal image display mode is 0.4, the duty in the display period Pa โ€ฒ is 0.88 (= [ 0.4 + 4] / 5). That is, in the display period Pa โ€ฒ, the instantaneous light emission luminance Btb is 0.45 (= 0.4 / 0.88) times the instantaneous light emission luminance Bt (thick broken line in FIG. 16) in the display period Pa. Then, it is visually recognized as an image having the same brightness and the same contrast by the user's eyes.

ไปฅไธŠใฎใ‚ˆใ†ใซใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใงใฏใ€ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใ‚‹ใจใ€ๅ„็”ป็ด ๅ›ž่ทฏ๏ผ—ใซใŠใ„ใฆ็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ้›ป่ทใŒใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚Œใ‚‹ๆ›ธ่พผๆœŸ้–“๏ผฐ๏ผ”ใจใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใงใ‚ใ‚Šใ€ไธ”ใคๅ„็”ป็ด ใ‹ใ‚‰็”ป็ด ใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใฎๅ…‰ใŒๅ‡บๅฐ„ใ•ใ‚Œใ‚‹็™บๅ…‰ๆœŸ้–“๏ผฐ๏ฝ…โ€™ใจใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใจใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใฎๆœŸ้–“ใซใ‚ใŸใฃใฆ่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผขใซ็”ปๅƒใฎ่กจ็คบใŒ่กŒใ‚ใ‚Œใชใ„้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€่กจ็คบ้ƒจ๏ผ’๏ผ๏ผ๏ผขใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใจ่กจ็คบใ•ใ‚Œใชใ„้ž่กจ็คบๆœŸ้–“๏ผฐ๏ฝ‚ใจใŒไบคไบ’ใซ่กŒใ‚ใ‚Œใ‚‹ใ“ใจใซใชใ‚‹ใ€‚ใใฎ็ตๆžœใ€็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใจๅŒๆง˜ใซใ€่กจ็คบ็”ปๅƒใฎใ‚ณใƒณใƒˆใƒฉใ‚นใƒˆใฎไฝŽไธ‹ใ‚’้˜ฒใŽใคใคใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย As described above, in the image display device 1B according to the second embodiment, when the low power consumption image display mode is set at a predetermined timing, the charge corresponding to the pixel data signal is accumulated in the capacitor 4 in each pixel circuit 7. Display period Pa โ€ฒ having a writing period P4 and a light emission period Pe โ€ฒ that is longer than or equal to one frame period Pf1, and in which light having a luminance corresponding to the pixel data signal is emitted from each pixel, and one frame period Pf1 The non-display period Pb in which no image is displayed on the display unit 200B over the above period is repeated in time sequence. For this reason, the display period Pa โ€ฒ in which an image is displayed and the non-display period Pb in which the image is not displayed are alternately performed on the display unit 200B. As a result, as in the first embodiment, it is possible to reduce power consumption while preventing a decrease in contrast of the display image.

ใพใŸใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใงใฏใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใซใŠใ‘ใ‚‹ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็žฌ้–“็š„ใช็™บๅ…‰่ผๅบฆใ‚’ไฝŽๆธ›ใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใŸใ‚ใ€็™บๅ…‰ๆ™‚ใฎ้›ปๆบ้›ปๅœงใ‚’ไธ‹ใ’ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ๆ›ดใซใ€็™บๅ…‰ๆ™‚ใซใŠใ„ใฆ็žฌ้–“็š„ใซๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’ๆตใ‚Œใ‚‹้›ปๆตใฎๅฏ†ๅบฆใ‚‚ไฝŽๆธ›ใ•ใ‚Œใ‚‹ใŸใ‚ใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฒใ„ใฆใฏ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใฎ้•ทๅฏฟๅ‘ฝๅŒ–ใ‚’ๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย In the image display device 1B according to the second embodiment, since the instantaneous light emission luminance of the organic EL element 1 in the display period Pa โ€ฒ can be reduced, the power supply voltage at the time of light emission can be lowered. Furthermore, since the density of the current flowing through the organic EL element 1 instantaneously at the time of light emission is also reduced, the life of the organic EL element 1 and thus the image display device 1B can be extended.

ใพใŸใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใซๅฟ…่ฆใช้›ป่ทใฎ่“„็ฉใŒ่กŒใ‚ใ‚Œใ‚‹ๆœŸ้–“๏ผฐ๏ฝใงใฏใ€็”ป็ด ๅ›ž่ทฏ๏ผ—ใซไฟ‚ใ‚‹๏ผ•ใคใฎ้›ปไฝ๏ผถ๏ฝ„๏ฝ„๏ผŒ๏ผถ๏ฝ“๏ฝ“๏ผŒ๏ผถ๏ฝŒ๏ฝ“๏ผ‘๏ผŒ๏ผถ๏ฝŒ๏ฝ“๏ผ’๏ผŒ๏ผถ๏ฝŒ๏ฝ‰๏ฝ“ใ‚’ๅค‰ๅŒ–ใ•ใ›ใ‚‹ใ“ใจใซใ‚ˆใ‚Šใ€ใ„ใ‚ใ‚†ใ‚‹ๅฎน้‡ๆๅคฑ๏ผˆใ™ใชใ‚ใกๅ›ž่ทฏใซๅญ˜ๅœจใ™ใ‚‹ๅฎน้‡ใซใ‚ˆใ‚‹้›ปๅŠ›ๆๅคฑ๏ผ‰ใŒ็”Ÿใ˜ใ‚‹ใ€‚ใ“ใฎ็‚นใซ้–ขใ—ใ€็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผขใฎ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚ŒใŸๅ ดๅˆใซใฏใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚ŒใŸๅ ดๅˆใ‚ˆใ‚Šใ‚‚ใ€่กจ็คบๆœŸ้–“ใ‚’ๅ ใ‚ใ‚‹ๆœŸ้–“๏ผฐ๏ฝใฎๅ‰ฒๅˆใŒๆธ›ๅฐ‘ใ™ใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€ๅฎน้‡ๆๅคฑใŒไฝŽๆธ›ใ•ใ‚Œใ€ๆ›ดใซๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใŒๅ›ณใ‚‰ใ‚Œใ‚‹ใ€‚ ย ย Further, in the period Pp during which charge necessary for light emission of the organic EL element 1 is accumulated, the five potentials Vdd, Vss, Vls1, Vls2, and Vlis relating to the pixel circuit 7 are changed, so that a so-called capacitance loss (that is, a circuit) Power loss due to the capacity present in the In this regard, when the image display mode of the image display apparatus 1B according to the second embodiment is set to the low power consumption image display mode, the period that occupies the display period as compared to the case where the normal image display mode is set. The proportion of Pp decreases. For this reason, capacity loss is reduced, and power consumption is further reduced.

๏ผœๅค‰ๅฝขไพ‹๏ผž
ไปฅไธŠใ€ใ“ใฎ็™บๆ˜ŽใฎๅฎŸๆ–ฝๅฝขๆ…‹ใซใคใ„ใฆ่ชฌๆ˜Žใ—ใŸใŒใ€ใ“ใฎ็™บๆ˜ŽใฏไธŠ่จ˜่ชฌๆ˜Žใ—ใŸๅ†…ๅฎนใฎใ‚‚ใฎใซ้™ๅฎšใ•ใ‚Œใ‚‹ใ‚‚ใฎใงใฏใชใ„ใ€‚
<Modification>
As mentioned above, although embodiment of this invention was described, this invention is not limited to the thing of the content demonstrated above.

โ—Žไพ‹ใˆใฐใ€ไธŠ่จ˜ๅฎŸๆ–ฝๅฝขๆ…‹ใงใฏใ€็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใŒ้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹็Šถๆ…‹ใงใ€ใƒใƒƒใƒ†ใƒชใƒผใฎๆฎ‹้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใจใชใ‚‹ใจใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใŒๅค‰ๆ›ดใ•ใ‚ŒใŸใŒใ€ใ“ใ‚Œใซ้™ใ‚‰ใ‚Œใšใ€ไพ‹ใˆใฐใ€ใƒฆใƒผใ‚ถใƒผใซใ‚ˆใฃใฆๆ“ไฝœ้ƒจ๏ผ‘๏ผ“๏ผใŒ็จฎใ€…ๆ“ไฝœใ•ใ‚Œใ‚‹ใ“ใจใงใ€ๆ“ไฝœ้ƒจ๏ผ‘๏ผ“๏ผใŒไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ™ใ‚‹ใŸใ‚ใฎๆ‰€ๅฎšใฎๆ“ไฝœใ‚’ๅ—ใ‘ไป˜ใ‘ใŸๅ ดๅˆใซใ€ๅˆถๅพก้ƒจ๏ผ’๏ผ‘๏ผ๏ผก๏ผŒ๏ผ’๏ผ‘๏ผ๏ผขใŒใ€็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใ‚’ใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ™ใ‚‹ใ‚ˆใ†ใซใ—ใฆใ‚‚่‰ฏใ„ใ€‚ใ“ใฎใ‚ˆใ†ใชๆง‹ๆˆใซใ‚ˆใ‚Œใฐใ€ใƒใƒƒใƒ†ใƒชใƒผๅˆ‡ใ‚Œใซใ‚ˆใฃใฆ่ฃ…็ฝฎใŒไฝฟ็”จใงใใชใใชใ‚‹ใจใ„ใฃใŸไธๅ…ทๅˆใ‚’้ฉๅฎœๅ›ž้ฟใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย โ—Ž For example, in the above embodiment, when the image display mode is set to the normal image display mode, the setting is changed to the low power consumption image display mode when the remaining amount of the battery becomes a predetermined amount or less. For example, when the operation unit 130 receives various operations for setting to the low power consumption image display mode by various operations of the operation unit 130 by the user, the control units 210A and 210B The image display mode may be set to the low power consumption image display mode. According to such a configuration, it is possible to appropriately avoid the problem that the device cannot be used due to the battery running out.

โ—ŽใพใŸใ€ไธŠ่จ˜็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€ๅ›ณ๏ผ‘๏ผ–ใง็คบใ—ใŸใ‚ˆใ†ใซใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹๏ผ‘ๅ›žใฎ็™บๅ…‰ๆœŸ้–“๏ผฐ๏ผ–ใ‚ˆใ‚Šใ‚‚ใ€๏ผ‘ๅ›žใฎ็™บๅ…‰ๆœŸ้–“๏ผˆๆ™‚ๅˆป๏ผด๏ผ‘ใ€œ๏ผด๏ผ’๏ผ‰ใŒ้•ทใใชใ‚‹ใ€‚ใ“ใฎใŸใ‚ใ€ๆฌกใฎ็”ปๅƒใซๅˆ‡ใ‚Šๆ›ฟใ‚ใ‚‹ๅ‘จๆœŸใŒ้•ทใใชใ‚‹ใŸใ‚ใ€ๆป‘ใ‚‰ใ‹ใซ่ขซๅ†™ไฝ“ใŒๅค‰ๅŒ–ใ™ใ‚‹ๅ‹•็”ป่กจ็คบใซใฏ้ฉใ•ใชใ„ใŒใ€้›ปๅญใƒกใƒผใƒซใฎ็”ป้ขใชใฉใจใ„ใฃใŸๅ„็จฎ้™ๆญข็”ปใ‚’่กจ็คบใ™ใ‚‹ๅ ดๅˆใซใฏใ€็‰นใซๅ•้กŒใŒใชใใ€ๆถˆ่ฒป้›ปๅŠ›ใฎไฝŽๆธ›ใ‚’ๆœ‰ๅŠนใซๅ›ณใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย In addition, in the low power consumption image display mode according to the second embodiment, as shown in FIG. 16, the light emission period (time T1 to T2) is one time than the light emission period P6 in the normal image display mode. ) Becomes longer. For this reason, since the cycle of switching to the next image becomes long, it is not suitable for displaying moving images in which subjects change smoothly, but there are no particular problems when displaying various still images such as e-mail screens. Electric power can be effectively reduced.

ใชใŠใ€ใƒใƒƒใƒ†ใƒชใƒผใฎๆฎ‹้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใจใชใฃใŸๅ ดๅˆใซใฏใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ้ฉใ•ใชใ„ๅ‹•็”ป่กจ็คบใŒ็ฆๆญขใ•ใ‚Œใ‚‹ใ‚ˆใ†ใซใ€ใ™ใชใ‚ใก้™ๆญข็”ป่กจ็คบใŒ่กŒใ‚ใ‚Œใ‚‹ใ‚ˆใ†ใซๆง‹ๆˆใ•ใ‚Œใฆใ‚‚่‰ฏใ„ใ€‚ใพใŸใ€้€†ใซใ€ๅ‹•็”ป่กจ็คบใชใฉใ‚’็ถ™็ถšใ—ใŸใ„ๅ ดๅˆใชใฉใงใฏใ€ใƒฆใƒผใ‚ถใƒผใŒๆ“ไฝœ้ƒจ๏ผ‘๏ผ“๏ผใ‚’็จฎใ€…ๆ“ไฝœใ™ใ‚‹ใ“ใจใงใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใธใฎ็งป่กŒใŒ็ฆๆญขใ•ใ‚Œใ‚‹ใ‚ˆใ†ใชๆง‹ๆˆใจใ—ใฆใ‚‚่‰ฏใ„ใ€‚ ย ย In addition, when the remaining amount of the battery is equal to or less than a predetermined amount, the moving image display that is not suitable for the low power consumption image display mode may be prohibited, that is, the still image display may be performed. Conversely, when it is desired to continue moving image display or the like, the user may perform various operations on the operation unit 130 to prohibit the transition to the low power consumption image display mode.

โ—ŽใพใŸใ€ไธŠ่จ˜็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€ๅ›ณ๏ผ‘๏ผ–ใง็คบใ—ใŸใ‚ˆใ†ใซใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใŒใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใซๅฟ…่ฆใช้›ป่ทใฎ่“„็ฉใซ่ฆใ™ใ‚‹ๆœŸ้–“๏ผฐ๏ฝใจใ€ๆฏ”่ผƒ็š„้•ทๆœŸ้–“ใฎ็™บๅ…‰็Šถๆ…‹ใŒ็ถญๆŒใ•ใ‚Œใ‚‹็™บๅ…‰ๆœŸ้–“๏ผˆๆ™‚ๅˆป๏ผด๏ผ‘ใ€œ๏ผด๏ผ’๏ผ‰ใจใซใ‚ˆใฃใฆๆง‹ๆˆใ•ใ‚ŒใŸใŒใ€ใ“ใ‚Œใซ้™ใ‚‰ใ‚Œใšใ€๏ผ‘ๅ›žใฎใƒ‡ใƒผใ‚ฟๆ›ธ่พผๅ‡ฆ็†ใงใ‚ณใƒณใƒ‡ใƒณใ‚ต๏ผ”ใซ่“„็ฉใ•ใ‚ŒใŸ้›ป่ทใซๅฟœใ˜ใŸ็™บๅ…‰ใŒๆ–ญ็ถš็š„ใซ่กŒใ‚ใ‚Œใ‚‹ใ“ใจใงใ€่กจ็คบๆœŸ้–“ใซใŠใ‘ใ‚‹ๆ–ญ็ถš็š„ใช็™บๅ…‰ใฎๅˆ่จˆๆœŸ้–“ใŒใ€๏ผ‘ใƒ•ใƒฌใƒผใƒ ๆœŸ้–“๏ผฐ๏ฝ†๏ผ‘ไปฅไธŠใจใชใ‚‹ใ‚ˆใ†ใซใ—ใฆใ‚‚ใ€ไธŠ่จ˜็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใจๅŒๆง˜ใซใ€่กจ็คบๆœŸ้–“ใซใŠใ‘ใ‚‹ใƒ‡ใƒฅใƒผใƒ†ใ‚ฃใƒผใ‚’ๅ‘ไธŠใ•ใ›ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ ย ย Further, in the low power consumption image display mode according to the second embodiment, as shown in FIG. 16, the display period Pa โ€ฒ is a period Pp required for accumulating charges necessary for light emission of the organic EL element 1, and The light emission period (time T1 to T2) in which the light emission state is maintained for a relatively long period of time is not limited to this, and light emission corresponding to the electric charge accumulated in the capacitor 4 by one data writing process Is performed intermittently, even if the total period of intermittent light emission in the display period is equal to or longer than one frame period Pf1, as in the low power consumption image display mode according to the second embodiment, The duty in the display period can be improved.

โ—ŽใพใŸใ€ไธŠ่จ˜็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใงใฏใ€ๅ›ณ๏ผ‘๏ผ–ใง็คบใ—ใŸใ‚ˆใ†ใซใ€่กจ็คบๆœŸ้–“๏ผฐ๏ฝโ€™ใฎๅˆๆœŸใซใŠใ„ใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใฎ็™บๅ…‰ใซๅฟ…่ฆใช้›ป่ทใฎ่“„็ฉใซ่ฆใ™ใ‚‹ๆœŸ้–“๏ผฐ๏ฝ๏ผˆๅ›ณ๏ผ–ใซใŠใ‘ใ‚‹๏ผฐ๏ผ‘ใ€œ๏ผฐ๏ผ•ใซ็›ธๅฝ“๏ผ‰ใŒๅญ˜ๅœจใ™ใ‚‹ใŒใ€ใ“ใ‚Œใ‚’็œ็•ฅใ—ใฆใ‚‚ๆง‹ใ‚ใชใ„ใ€‚ใ“ใฎๅ ดๅˆใ€้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซ้–ขใ—ใฆใ€ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซๅˆ‡ใ‚Šๆ›ฟใ‚ใ‚‹็›ดๅ‰ใฎใƒ•ใƒฌใƒผใƒ ใซใŠใ„ใฆใ€็”ป็ด ๅ›ž่ทฏใซไพ›็ตฆใ•ใ‚ŒใŸใƒ‡ใƒผใ‚ฟไฟกๅทใซๅŸบใฅใ„ใฆใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’็™บๅ…‰ใ•ใ›ใ‚Œใฐใ‚ˆใ„ใ€‚ ย ย In the low power consumption image display mode according to the second embodiment, as shown in FIG. 16, the period Pp required for accumulating charges necessary for light emission of the organic EL element 1 at the initial stage of the display period Pa โ€ฒ. (Corresponding to P1 to P5 in FIG. 6) exists, but this may be omitted. In this case, regarding the normal image display mode, the organic EL element 1 may be caused to emit light based on the data signal supplied to the pixel circuit in the frame immediately before switching to the low power consumption image display mode.

โ—ŽใพใŸใ€ไธŠ่จ˜ๅฎŸๆ–ฝๅฝขๆ…‹ใงใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใ‚’็”จใ„ใŸๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚ค๏ผก๏ผกใ‚’ๅ‚™ใˆใŸ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ๏ผ‘๏ผก๏ผŒ๏ผ‘๏ผขใ‚’ๆŒ™ใ’ใฆ่ชฌๆ˜Žใ—ใŸใŒใ€ใ“ใ‚Œใซ้™ใ‚‰ใ‚Œใšใ€ๆœฌ็™บๆ˜Žใฏใ€ไพ‹ใˆใฐใ€ๆถฒๆ™ถใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใชใฉใจใ„ใฃใŸไป–ใฎๆ–นๅผใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใซๅฏพใ—ใฆใ‚‚้ฉ็”จใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ไพ‹ใˆใฐใ€ๆถฒๆ™ถใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใ‚’็”จใ„ใ‚‹ๅ ดๅˆใซใฏใ€ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญ๏ผ‘ใชใฉใจใ„ใฃใŸ็™บๅ…‰็ด ๅญใฎ้ง†ๅ‹•ๅˆถๅพกใงใฏใชใใ€ใƒใƒƒใ‚ฏใƒฉใ‚คใƒˆใ‹ใ‚‰ๅ‡บๅฐ„ใ•ใ‚Œใ‚‹ๅ…‰ใ‚’็”ป็ด ใ”ใจใซใฉใฎใ‚ˆใ†ใซใ—ใฆ้€ๅ…‰ใ•ใ›ใฆ่กจ็คบ้ƒจใ‹ใ‚‰ๅ…‰ใ‚’ๅฐ„ๅ‡บใ•ใ›ใ‚‹ใฎใ‹ใจใ„ใฃใŸ่กจ็คบ็ด ๅญใฎ้ง†ๅ‹•ๅˆถๅพกใซๅฏพใ—ใฆใ€ๆœฌ็™บๆ˜ŽใŒ้ฉ็”จใ•ใ‚Œใ‚‹ใ‚ˆใ†ใซใ™ใ‚Œใฐ่‰ฏใ„ใ€‚ ย ย In the above embodiment, the image display devices 1A and 1B including the organic EL display AA using the organic EL element 1 have been described. However, the present invention is not limited to this, and the present invention may be a liquid crystal display, for example. The present invention can also be applied to other types of image display apparatuses. For example, when a liquid crystal display is used, it is not the drive control of a light emitting element such as the organic EL element 1 but how light emitted from the backlight is transmitted for each pixel to emit light from the display unit. The present invention may be applied to the drive control of the display element.

โ—ŽใพใŸใ€ไธŠ่จ˜ๅฎŸๆ–ฝๅฝขๆ…‹ใงใฏใ€็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎไธ€ไพ‹ใจใ—ใฆๆบๅธฏ้›ป่ฉฑๆฉŸ๏ผ‘๏ผก๏ผŒ๏ผ‘๏ผขใ‚’ๆŒ™ใ’ใฆ่ชฌๆ˜Žใ—ใŸใŒใ€ใ“ใ‚Œใซ้™ใ‚‰ใ‚Œใšใ€ๆœฌ็™บๆ˜Žใฏใ€ไพ‹ใˆใฐใ€ใƒŽใƒผใƒˆๅž‹ใƒ‘ใ‚ฝใ‚ณใƒณใ‚„ใƒ‡ใ‚ธใ‚ฟใƒซใ‚ซใƒกใƒฉใ‚„๏ผฐ๏ผค๏ผกใชใฉใจใ„ใฃใŸใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚คใŒๆญ่ผ‰ใ•ใ‚ŒใŸๆบๅธฏๅฏ่ƒฝใช็”ปๅƒ่กจ็คบ่ฃ…็ฝฎไธ€่ˆฌใซ้ฉ็”จใ™ใ‚‹ใ“ใจใŒใงใใ‚‹ใ€‚ใชใŠใ€ๆœฌ็™บๆ˜Žใฏใ€ๅ‹ฟ่ซ–ใ€ใƒใƒƒใƒ†ใƒชใƒผใ‚’็”จใ„ใชใ„็”ปๅƒ่กจ็คบ่ฃ…็ฝฎไธ€่ˆฌใซใŠใ‘ใ‚‹ไฝŽๆถˆ่ฒป้›ปๅŠ›ๅŒ–ใซใ‚‚้ฉ็”จๅฏ่ƒฝใงใ‚ใ‚‹ใ“ใจใฏ่จ€ใ†ใพใงใ‚‚ใชใ„ใ€‚ ย ย In the above embodiment, the cellular phones 1A and 1B are described as an example of the image display device. However, the present invention is not limited to this, and the present invention is equipped with a display such as a notebook computer, a digital camera, or a PDA. The present invention can be applied to general portable image display devices. Needless to say, the present invention is also applicable to low power consumption in general image display apparatuses that do not use a battery.

ๆœฌ็™บๆ˜Žใฎ็ฌฌ๏ผ‘ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎๆฆ‚็•ฅๆง‹ๆˆใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚1 is a diagram illustrating a schematic configuration of an image display device according to a first embodiment of the present invention. ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎๆฉŸ่ƒฝๆง‹ๆˆใ‚’ไพ‹็คบใ™ใ‚‹ใƒ–ใƒญใƒƒใ‚ฏๅ›ณใงใ‚ใ‚‹ใ€‚It is a block diagram which illustrates the functional composition of an image display device. ่กจ็คบ้ƒจใฎๆฉŸ่ƒฝๆง‹ๆˆใฎๆฆ‚็•ฅใ‚’็คบใ™ใƒ–ใƒญใƒƒใ‚ฏๅ›ณใงใ‚ใ‚‹ใ€‚It is a block diagram which shows the outline of a function structure of a display part. ็”ป็ด ๅ›ž่ทฏใฎๆง‹ๆˆใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which illustrates the structure of a pixel circuit. ็”ป็ด ๅ›ž่ทฏใฎๆง‹ๆˆใซๅฏ„็”Ÿๅฎน้‡ใ‚’ๅŠ ใˆใŸๅ›ณใงใ‚ใ‚‹ใ€‚It is the figure which added the parasitic capacitance to the structure of a pixel circuit. ๆœ‰ๆฉŸ๏ผฅ๏ผฌ็ด ๅญใ‚’็™บๅ…‰ใ•ใ›ใ‚‹้š›ใฎไฟกๅทๆณขๅฝขใ‚’็คบใ™ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใƒใƒฃใƒผใƒˆใงใ‚ใ‚‹ใ€‚It is a timing chart which shows the signal waveform at the time of making an organic EL element light-emit. ๏ผฃ๏ฝ“ๅˆๆœŸๅŒ–ๆœŸ้–“ใงใฎ็”ป็ด ๅ›ž่ทฏใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚Œใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which illustrates the flow of the electric current in the pixel circuit in a Cs initialization period. ๆบ–ๅ‚™ๆœŸ้–“ใงใฎ็”ป็ด ๅ›ž่ทฏใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚Œใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which illustrates the flow of the electric current in the pixel circuit in a preparation period. ๏ผถ๏ฝ”๏ฝˆ่ฃœๅ„ŸๆœŸ้–“ใงใฎ็”ป็ด ๅ›ž่ทฏใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚Œใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which illustrates the flow of the electric current in the pixel circuit in a Vth compensation period. ๆ›ธ่พผๆœŸ้–“ใงใฎ็”ป็ด ๅ›ž่ทฏใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚Œใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which illustrates the flow of the electric current in the pixel circuit in the writing period. ็™บๅ…‰ๆœŸ้–“ใงใฎ็”ป็ด ๅ›ž่ทฏใซใŠใ‘ใ‚‹้›ปๆตใฎๆตใ‚Œใ‚’ไพ‹็คบใ™ใ‚‹ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which illustrates the flow of the electric current in the pixel circuit in the light emission period. ้€šๅธธ็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹็™บๅ…‰่ผๅบฆใฎๅค‰ๅŒ–ใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which shows the change of the light emission luminance in normal image display mode. ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹ใ‚ฟใ‚คใƒŸใƒณใ‚ฐใƒใƒฃใƒผใƒˆใงใ‚ใ‚‹ใ€‚6 is a timing chart in a low power consumption image display mode. ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹็™บๅ…‰่ผๅบฆใฎๅค‰ๅŒ–ใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which shows the change of the light emission luminance in the low power consumption image display mode. ็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹้ง†ๅ‹•ๆณขๅฝขใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใƒใƒฃใƒผใƒˆใงใ‚ใ‚‹ใ€‚It is a timing chart of a drive waveform in the low power consumption image display mode according to the second embodiment. ็ฌฌ๏ผ’ๅฎŸๆ–ฝๅฝขๆ…‹ใซไฟ‚ใ‚‹ไฝŽๆถˆ่ฒป้›ปๅŠ›็”ปๅƒ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹็™บๅ…‰่ผๅบฆใฎๅค‰ๅŒ–ใ‚’็คบใ™ๅ›ณใงใ‚ใ‚‹ใ€‚It is a figure which shows the change of the light emission luminance in the low power consumption image display mode which concerns on 2nd Embodiment.

็ฌฆๅทใฎ่ชฌๆ˜ŽExplanation of symbols

๏ผ‘๏ผก๏ผŒ๏ผ‘๏ผข ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎ
๏ผ— ็”ป็ด ๅ›ž่ทฏ
๏ผ‘๏ผ๏ผ ๆœฌไฝ“้ƒจ
๏ผ‘๏ผ’๏ผ ใƒใƒƒใƒ†ใƒชใƒผ
๏ผ‘๏ผ“๏ผ ๆ“ไฝœ้ƒจ
๏ผ’๏ผ๏ผ๏ผก๏ผŒ๏ผ’๏ผ๏ผ๏ผข ่กจ็คบ้ƒจ
๏ผ’๏ผ‘๏ผ๏ผก๏ผŒ๏ผ’๏ผ‘๏ผ๏ผข ๅˆถๅพก้ƒจ
๏ผ’๏ผ’๏ผ ็”ปๅƒไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ
๏ผ’๏ผ“๏ผ ่ตฐๆŸปไฟกๅท็ทš้ง†ๅ‹•ๅ›ž่ทฏ
๏ผก๏ผก ๆœ‰ๆฉŸ๏ผฅ๏ผฌใƒ‡ใ‚ฃใ‚นใƒ—ใƒฌใ‚ค
๏ผฌ๏ฝ‰๏ฝ“ ็”ปๅƒไฟกๅท็ทš
๏ผฌ๏ฝ“๏ฝ“ ่ตฐๆŸปไฟกๅท็ทš
DESCRIPTION OF SYMBOLS 1A, 1B Image display apparatus 7 Pixel circuit 100 Main body part 120 Battery 130 Operation part 200A, 200B Display part 210A, 210B Control part 220 Image signal line drive circuit 230 Scan signal line drive circuit AA Organic EL display Lis Image signal line Lss Scan signal line

Claims (12)

็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€
่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใจใ€
ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใง่จญๅฎšใ™ใ‚‹ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใจใ€
ใ‚’ๅ‚™ใˆใ€
ๅ‰่จ˜่กจ็คบ้ƒจใฎๅ‰่จ˜่กจ็คบใƒขใƒผใƒ‰ใฏใ€ๅฐ‘ใชใใจใ‚‚็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใจ็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใจใ‚’ๆœ‰ใ—ใ€
ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€
ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚Šใ€
ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€
ๅฐ‘ใชใใจใ‚‚๏ผ‘ไปฅไธŠใฎๅ‰่จ˜็ฌฌ๏ผ‘ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€‚
An image display device,
A display unit having a plurality of pixel circuits;
Mode setting means for setting a display mode of the display unit at a predetermined timing;
With
The display mode of the display unit has at least a first display mode and a second display mode,
The first display mode is
A first period having a writing period in which a data signal is supplied to each pixel circuit and a light emitting period in which the light emitting element in each pixel circuit emits light with luminance corresponding to the data signal is repeated in time sequence. Is a mode in which a plurality of frame images are displayed in time sequence on the display unit,
The second display mode is
At least one or more of the first periods and a second period that is longer than the first period and in which the light emitting elements do not emit light in the display portion are repeated in time sequence. The image display device is a mode in which an image is displayed on the display unit.
็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€
่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใจใ€
ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใง่จญๅฎšใ™ใ‚‹ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใจใ€
ใ‚’ๅ‚™ใˆใ€
ๅ‰่จ˜่กจ็คบ้ƒจใฎๅ‰่จ˜่กจ็คบใƒขใƒผใƒ‰ใฏใ€ๅฐ‘ใชใใจใ‚‚็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใจ็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใจใ‚’ๆœ‰ใ—ใ€
ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€
ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚Šใ€
ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€
ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ’ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใงใ€ๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใ‚ˆใ‚Šใ‚‚้•ทใ„ๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใจใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€‚
An image display device,
A display unit having a plurality of pixel circuits;
Mode setting means for setting a display mode of the display unit at a predetermined timing;
With
The display mode of the display unit has at least a first display mode and a second display mode,
The first display mode is
A first period having a first writing period in which a data signal is supplied to each of the pixel circuits and a first light emitting period in which the light emitting element in each of the pixel circuits emits light with a luminance corresponding to the data signal; It is a mode in which a plurality of frame images are displayed in time sequence on the display unit, repeated in time sequence,
The second display mode is
A second writing period in which a data signal is supplied to each of the pixel circuits; and a second light emission in which a light emitting element in each of the pixel circuits emits light with a luminance corresponding to the data signal for a period longer than the first light emitting period. A second period having a period and a third period having a length equal to or longer than the first period and in which no light emission of each light-emitting element is performed in the display portion are sequentially repeated. An image display apparatus characterized by being in a mode in which an image is displayed on the display unit.
็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€
่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใจใ€
ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใง่จญๅฎšใ™ใ‚‹ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใจใ€
ใ‚’ๅ‚™ใˆใ€
ๅ‰่จ˜่กจ็คบ้ƒจใฎๅ‰่จ˜่กจ็คบใƒขใƒผใƒ‰ใฏใ€ๅฐ‘ใชใใจใ‚‚็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใจ็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใจใ‚’ๆœ‰ใ—ใ€
ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€
ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚Šใ€
ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใŒใ€
ๅ‰่จ˜็ฌฌ๏ผ‘ใฎ่กจ็คบใƒขใƒผใƒ‰ใซใŠใ‘ใ‚‹ๆœ€ๅพŒใฎใƒ•ใƒฌใƒผใƒ ๆœŸ้–“ใซไพ›็ตฆใ•ใ‚ŒใŸใƒ‡ใƒผใ‚ฟไฟกๅทใซๅŸบใฅใ„ใฆใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใ‚ˆใ‚Šใ‚‚้•ทใ„ๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใƒขใƒผใƒ‰ใงใ‚ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€‚
An image display device,
A display unit having a plurality of pixel circuits;
Mode setting means for setting a display mode of the display unit at a predetermined timing;
With
The display mode of the display unit has at least a first display mode and a second display mode,
The first display mode is
A first period having a first writing period in which a data signal is supplied to each of the pixel circuits and a first light emitting period in which the light emitting element in each of the pixel circuits emits light with a luminance corresponding to the data signal. It is a mode in which a plurality of frame images are displayed in time sequence on the display unit, repeated in time sequence,
The second display mode is
Based on the data signal supplied in the last frame period in the first display mode, a second light emitting period in which the light emitting elements in each of the pixel circuits emit light for a period longer than the first light emitting period. A period and a third period having a length equal to or longer than the first period and in which no light emission of each light emitting element is performed in the display unit are sequentially repeated in time, and an image is displayed on the display unit. An image display device characterized by being in a display mode.
่ซ‹ๆฑ‚้ …๏ผ‘ไนƒ่‡ณ่ซ‹ๆฑ‚้ …๏ผ“ใฎใ„ใšใ‚Œใ‹ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€
ๅ‰่จ˜่กจ็คบ้ƒจใซ้›ปๅŠ›ใ‚’ไพ›็ตฆใ™ใ‚‹ใƒใƒƒใƒ†ใƒชใƒผใ‚’ๆ›ดใซๅ‚™ใˆใ€
ๅ‰่จ˜ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใŒใ€ๅ‰่จ˜ใƒใƒƒใƒ†ใƒชใƒผใฎ่“„้›ป้‡ใŒๆ‰€ๅฎš้‡ไปฅไธ‹ใจใชใฃใŸๅ ดๅˆใซใ€ๅ‰่จ˜่กจ็คบ้ƒจใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ใ€ๅ‰่จ˜็ฌฌ๏ผ’ใฎ่กจ็คบใƒขใƒผใƒ‰ใซ่จญๅฎšใ™ใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€‚
The image display device according to any one of claims 1 to 3,
A battery for supplying power to the display unit;
The image display device characterized in that the mode setting means sets the display mode of the display unit to the second display mode when the storage amount of the battery becomes a predetermined amount or less.
่ซ‹ๆฑ‚้ …๏ผ‘ไนƒ่‡ณ่ซ‹ๆฑ‚้ …๏ผ“ใฎใ„ใšใ‚Œใ‹ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€
ๅ‰่จ˜ใƒขใƒผใƒ‰่จญๅฎšๆ‰‹ๆฎตใฎ่กจ็คบใƒขใƒผใƒ‰ใ‚’ๅˆ‡ใ‚Šๆ›ฟใˆใ‚‹ใŸใ‚ใฎๆ“ไฝœ้ƒจใ‚’ๆ›ดใซๅ‚™ใˆใŸใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€‚
The image display device according to any one of claims 1 to 3,
An image display apparatus further comprising an operation unit for switching a display mode of the mode setting means.
่ซ‹ๆฑ‚้ …๏ผ’ใพใŸใฏ่ซ‹ๆฑ‚้ …๏ผ“ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใงใ‚ใฃใฆใ€
ๅ‰่จ˜็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใซใŠใ‘ใ‚‹ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎๆ™‚้–“ๅฝ“ใŸใ‚Šใฎ็™บๅ…‰่ผๅบฆใŒๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใซใŠใ‘ใ‚‹ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎๆ™‚้–“ๅฝ“ใŸใ‚Šใฎ็™บๅ…‰่ผๅบฆใ‚ˆใ‚Šใ‚‚ๅฐใ•ใ„ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ€‚
The image display device according to claim 2 or 3, wherein
An image display device, wherein light emission luminance per hour of the light emitting element in the second light emission period is smaller than light emission luminance per hour of the light emitting element in the first light emission period.
็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€
(a)่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใ‚’ๅ‚™ใˆใŸ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ‚’ๆบ–ๅ‚™ใ™ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
(b)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
(c)ๅฐ‘ใชใใจใ‚‚๏ผ‘ไปฅไธŠใฎๅ‰่จ˜็ฌฌ๏ผ‘ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎๆœŸ้–“ใงใ‚ใ‚Šใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
ใ‚’ๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใ€‚
A driving method of an image display device,
(a) preparing an image display device including a display unit having a plurality of pixel circuits;
(b) A first period having a writing period in which a data signal is supplied to each pixel circuit and a light emitting period in which the light emitting element in each pixel circuit emits light with luminance according to the data signal is a time. A plurality of frame images displayed in time sequence on the display unit, sequentially repeated;
(c) At least one or more of the first periods and a second period that is longer than the first period and in which the light emitting elements do not emit light in the display section are sequentially arranged Repeated, displaying an image on the display unit;
A method for driving an image display device comprising:
่ซ‹ๆฑ‚้ …๏ผ—ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€
(d)ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€ๅ‰่จ˜(b)ใ‚นใƒ†ใƒƒใƒ—ใ‹ใ‚‰ๅ‰่จ˜(c)ใ‚นใƒ†ใƒƒใƒ—ใซ็งป่กŒใ•ใ›ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใ€
ใ‚’ๆ›ดใซๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใ€‚
A driving method of an image display device according to claim 7,
(d) a step of shifting from the step (b) to the step (c) at a predetermined timing;
The method for driving an image display device, further comprising:
็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€
(A)่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใ‚’ๅ‚™ใˆใŸ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ‚’ๆบ–ๅ‚™ใ™ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
(B)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
(C)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ’ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใงใ€ๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ไปฅไธŠใฎๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใจใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
ใ‚’ๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใ€‚
A driving method of an image display device,
(A) preparing an image display device including a display unit having a plurality of pixel circuits;
(B) a first writing period in which a data signal is supplied to each of the pixel circuits, and a first light emitting period in which the light emitting element in each of the pixel circuits emits light with a luminance corresponding to the data signal. The time period is repeated in time sequence, and a plurality of frame images are displayed in time sequence on the display unit;
(C) a second writing period in which a data signal is supplied to each of the pixel circuits; and a light emitting element in each of the pixel circuits that emits light for a period of time equal to or greater than the first light emitting period at a luminance corresponding to the data signal. A second period having two light emitting periods and a third period having a length equal to or longer than the first period and in which the light emitting elements in the display portion do not emit light. Repeated, displaying an image on the display unit;
A method for driving an image display device comprising:
่ซ‹ๆฑ‚้ …๏ผ™ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€
(D)ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€ๅ‰่จ˜(B)ใ‚นใƒ†ใƒƒใƒ—ใ‹ใ‚‰ๅ‰่จ˜(C)ใ‚นใƒ†ใƒƒใƒ—ใซ็งป่กŒใ•ใ›ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใ€
ใ‚’ๆ›ดใซๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใ€‚
A driving method of an image display device according to claim 9,
(D) a step of shifting from the step (B) to the step (C) at a predetermined timing;
The method for driving an image display device, further comprising:
็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€
(A)่ค‡ๆ•ฐใฎ็”ป็ด ๅ›ž่ทฏใ‚’ๆœ‰ใ™ใ‚‹่กจ็คบ้ƒจใ‚’ๅ‚™ใˆใŸ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใ‚’ๆบ–ๅ‚™ใ™ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
(B)ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏใซใƒ‡ใƒผใ‚ฟไฟกๅทใŒไพ›็ตฆใ•ใ‚Œใ‚‹็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใจใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅฝ“่ฉฒใƒ‡ใƒผใ‚ฟไฟกๅทใซๅฟœใ˜ใŸ่ผๅบฆใง็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ใจใ€ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ‘ใฎๆœŸ้–“ใŒๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ่ค‡ๆ•ฐใฎใƒ•ใƒฌใƒผใƒ ็”ปๅƒใŒๆ™‚้–“้ †ๆฌกใซ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
(C)ๅ‰่จ˜็ฌฌ๏ผ‘ๆ›ธ่พผๆœŸ้–“ใซใŠใ‘ใ‚‹ๆœ€ๅพŒใฎใƒ•ใƒฌใƒผใƒ ๆœŸ้–“ใซไพ›็ตฆใ•ใ‚ŒใŸใƒ‡ใƒผใ‚ฟไฟกๅทใซๅŸบใฅใ„ใฆใ€ๅ„ๅ‰่จ˜็”ป็ด ๅ›ž่ทฏๅ†…ใฎ็™บๅ…‰็ด ๅญใŒๅ‰่จ˜็ฌฌ๏ผ‘็™บๅ…‰ๆœŸ้–“ไปฅไธŠใฎๆœŸ้–“็™บๅ…‰ใ™ใ‚‹็ฌฌ๏ผ’็™บๅ…‰ๆœŸ้–“ใ‚’ๆœ‰ใ™ใ‚‹็ฌฌ๏ผ’ใฎๆœŸ้–“ใจใ€ๅฝ“่ฉฒ็ฌฌ๏ผ‘ใฎๆœŸ้–“ไปฅไธŠใฎ้•ทใ•ใ‚’ๆœ‰ใ—ใ€ไธ”ใคๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆๅ„ๅ‰่จ˜็™บๅ…‰็ด ๅญใฎ็™บๅ…‰ใŒ่กŒใ‚ใ‚Œใชใ„็ฌฌ๏ผ“ใฎๆœŸ้–“ใจใŒใ€ๆ™‚้–“้ †ๆฌกใซ็นฐใ‚Š่ฟ”ใ•ใ‚Œใฆใ€ๅ‰่จ˜่กจ็คบ้ƒจใซใŠใ„ใฆ็”ปๅƒใŒ่กจ็คบใ•ใ‚Œใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใจใ€
ใ‚’ๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใ€‚
A driving method of an image display device,
(A) preparing an image display device including a display unit having a plurality of pixel circuits;
(B) a first writing period in which a data signal is supplied to each of the pixel circuits, and a first light emitting period in which the light emitting element in each of the pixel circuits emits light with a luminance corresponding to the data signal. The time period is repeated in time sequence, and a plurality of frame images are displayed in time sequence on the display unit;
(C) Based on a data signal supplied in the last frame period in the first writing period, the second light emitting period in which the light emitting element in each pixel circuit emits light for a period longer than the first light emitting period. 2 and a third period having a length equal to or longer than the first period and in which the light emitting elements do not emit light in the display unit are sequentially repeated in time, and the display unit A step of displaying an image at
A method for driving an image display device comprising:
่ซ‹ๆฑ‚้ …๏ผ‘๏ผ‘ใซ่จ˜่ผ‰ใฎ็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใงใ‚ใฃใฆใ€
(D)ๆ‰€ๅฎšใฎใ‚ฟใ‚คใƒŸใƒณใ‚ฐใงใ€ๅ‰่จ˜(B)ใ‚นใƒ†ใƒƒใƒ—ใ‹ใ‚‰ๅ‰่จ˜(C)ใ‚นใƒ†ใƒƒใƒ—ใซ็งป่กŒใ•ใ›ใ‚‹ใ‚นใƒ†ใƒƒใƒ—ใ€
ใ‚’ๆ›ดใซๅ‚™ใˆใ‚‹ใ“ใจใ‚’็‰นๅพดใจใ™ใ‚‹็”ปๅƒ่กจ็คบ่ฃ…็ฝฎใฎ้ง†ๅ‹•ๆ–นๆณ•ใ€‚
The image display device driving method according to claim 11,
(D) a step of shifting from the step (B) to the step (C) at a predetermined timing;
The method for driving an image display device, further comprising:
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