CN101840672A - Light sensing module with protection function and display device - Google Patents
Light sensing module with protection function and display device Download PDFInfo
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- CN101840672A CN101840672A CN200910128039A CN200910128039A CN101840672A CN 101840672 A CN101840672 A CN 101840672A CN 200910128039 A CN200910128039 A CN 200910128039A CN 200910128039 A CN200910128039 A CN 200910128039A CN 101840672 A CN101840672 A CN 101840672A
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- 239000000758 substrate Substances 0.000 claims abstract description 68
- 230000003287 optical effect Effects 0.000 claims abstract description 51
- 238000009826 distribution Methods 0.000 claims description 51
- 238000009413 insulation Methods 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
The invention provides a light sensing module with a protection function and a display device, which are arranged on a first substrate and separated from an external circuit by an interval. The light sensing module comprises a light sensing device and a protection wiring. The light sensing device is arranged on the first substrate. The protection wiring has a conductive function and is located between the external circuit and a part of the light sensing device. Through the design of each embodiment of the invention, the protective wiring has a conductive function and is positioned between the optical sensing device and an external circuit of the optical sensing device, so that a shielding effect can be generated, the interference degree of the optical sensing device by the external circuit is reduced, and a sensing result with higher accuracy or higher stability can be measured. The display device of the embodiment of the invention can provide more proper brightness and is less prone to flicker, so that the display quality is improved.
Description
Technical field
The present invention is about a kind of OPTICAL SENSORS and display device, particularly about a kind of OPTICAL SENSORS of tool safeguard function and have the display device of OPTICAL SENSORS.
Background technology
In prior art, generally a surround lighting sensing element (ambient light sensor) can be installed on the display device, adjust the light-source brightness of display device in order to the intensity of measurement environment illumination with correspondence, so can meet the requirement that good display effect is provided and reduces power consumption simultaneously.United States Patent (USP) is announced No. 5831693 and is disclosed a kind of technology with display device of OPTICAL SENSORS, it is to utilize thin-film technique, with Photosensing Units be arranged at an active substrate around, by operational amplifier light signal is converted to electric signal again, adjust light-source brightness for display device.United States Patent (USP) is announced No. 7053967 and is disclosed another kind of technology with display device of OPTICAL SENSORS, and shown in Figure 2 as this patent specification, OPTICAL SENSORS sensitive context illumination, display device are then adjusted the brightness of its light-emitting component according to ambient light illumination.Because the display device with OPTICAL SENSORS is to adjust light-source brightness according to the measurement result of OPTICAL SENSORS, inaccurate or when swing is arranged when the measurement result of OPTICAL SENSORS, can make the light-source brightness flicker of display device, influence the quality of display device.
Summary of the invention
The purpose of one embodiment of the invention is to provide a kind of optical sensing module of tool safeguard function, in order to the sensing result of the influence circuit light sensing apparatus around the light sensing apparatus of avoiding optical sensing module.The purpose of another embodiment of the present invention be to provide a kind of display device its have optical sensing module, the light sensing apparatus of this optical sensing module can provide more accurately that sensing result maybe can provide more stable sensing result, to improve the display quality of display device.
According to one embodiment of the invention, a kind of optical sensing module of tool safeguard function is arranged on one first substrate and with an external circuit and is separated with one at interval.This optical sensing module comprises a light sensing apparatus and protection distribution.Light sensing apparatus is arranged on first substrate.The protection distribution has conducting function and between the part of external circuit and light sensing apparatus.
According to another embodiment of the present invention, a kind of display device comprises one first circuit, one first substrate, a light sensing apparatus and a protection distribution.Light sensing apparatus is arranged on first substrate and with first circuit and is separated with one at interval.The protection distribution has conducting function and between the part of first circuit and light sensing apparatus.
According to one embodiment of the invention, in the optical sensing module and display device of above-mentioned tool safeguard function, the light sensing signal wire that light sensing apparatus comprises an OPTICAL SENSORS and couples OPTICAL SENSORS, and the protection distribution is positioned between external circuit (first circuit) and the OPTICAL SENSORS; Or be positioned between external circuit (first circuit) and the light sensing signal wire.Preferably, the protection distribution is arranged on first substrate and surrounds OPTICAL SENSORS and light sensing signal wire one at least.
According to one embodiment of the invention, in the optical sensing module and display device of above-mentioned tool safeguard function, first real estate is to one second substrate, and external circuit (first circuit) is located at second substrate, and the protection distribution is located on the part of light sensing apparatus.Preferably, the protection distribution comprises a conductive wires and one second insulation course, and second insulation course is between this part of conductive wires and light sensing apparatus.Conductive wires can be a metal level or an indium tin oxide layer.
According to one embodiment of the invention, also comprise a driver in above-mentioned display device, be located on first substrate and be coupled to first circuit and light sensing apparatus.Preferably, the protection distribution is coupled to an earth terminal of driver.
According to one embodiment of the invention, also comprise one first insulation course and a second circuit in above-mentioned display device.Second circuit is arranged on first substrate, and intersects to form an overlay region across first insulation course and light sensing signal wire, and the thickness of first insulation course in this overlay region is between about
～approximately
Between.
According to one embodiment of the invention, in above-mentioned display device, first substrate is an active device substrate, and second substrate is a colored filter substrate, and first circuit is for using electrode altogether.Preferably, this part of light sensing apparatus forms a forward projection region along the normal vector of active device substrate on colored filter substrate, and this forward projection region is underlapped in common electrode.
Design by each embodiment of the present invention, the protection distribution has conducting function, and be positioned between the external circuit (first circuit) of light sensing apparatus and light sensing apparatus, can produce the worn-out effect of screen, reduce the degree that light sensing apparatus is disturbed by external circuit (first circuit), and can record the sensing result that accuracy is higher or degree of stability is higher.Therefore, the display device according to one embodiment of the invention can provide the quality that reaches difficult flicker and raising demonstration than appropriate brightness.
Description of drawings
Fig. 1 is the vertical view of a substrate of the display device of one embodiment of the invention;
Fig. 2 is the vertical view of a substrate of the display device of another embodiment of the present invention;
Fig. 3 is that the display device of one embodiment of the invention is along in the sectional view of the AA of Fig. 2 line;
Fig. 4 is the vertical view of a substrate of the display device of another embodiment of the present invention;
Fig. 5 A is that the display device of one embodiment of the invention is along in the sectional view of the BB of Fig. 4 line;
Fig. 5 B is that the display device of one embodiment of the invention is along in the sectional view of the CC of Fig. 4 line;
Fig. 6 is that the display device of another embodiment of the present invention is along in the sectional view of the BB of Fig. 4 line.
Drawing reference numeral:
10 active-matrix substrates
11 display device
20 light sensing apparatus
21 OPTICAL SENSORS
22 light sensing signal wires
30 optical sensing modules
31 protection distributions
41 first shared distributions
42 second shared distributions
51 common electrodes
52 first insulation courses
53 drivers
54 second insulation courses
59 earth terminals
55 conductive wires
90 colored filter substrates
The Sa viewing area
The Sb non-display area
The Sc overlay region
The Sd forward projection region
Embodiment
Following with reference to correlative type, the OPTICAL SENSORS design according to the embodiment of the invention is described, wherein components identical will be illustrated with identical reference marks.In addition, must note in this instructions the term of " the A layer is formed on B layer such as (or be located at) ", not be defined as the aspect that the A layer directly pastes contact B laminar surface, for example in the middle of A layer and the B layer still the interval other laminated also be this term institute covering scope.
Fig. 1 is the vertical view of a substrate of the display device of one embodiment of the invention.The display device of present embodiment comprises an active-matrix substrate 10, in the face of the colored filter substrate (not shown) of active-matrix substrate 10 and be positioned at a liquid crystal layer (not shown) between active-matrix substrate 10 and colored filter substrate.Please refer to Fig. 1, an optical sensing module 30 is arranged at an active-matrix substrate 10.But what this non-the present invention limited, in another embodiment, optical sensing module 30 can also be arranged at a colored filter substrate (not shown), this kind revised or is modified in those skilled in the art of the present technique and can finish according to following explanation, therefore omits the related description of these modifications and modification.Optical sensing module 30 has protection noise interference function, is separated with at interval with one first circuit of display device, and comprises a light sensing apparatus 20 and a protection distribution 31.In present embodiment, first circuit can be for being located at one first shared distribution 41 on the active-matrix substrate 10, and the first shared distribution 41 is coupled to common electrode (Vcom electrode) or end (ground) with being coupled to.The light sensing signal wire 22 that light sensing apparatus 20 is located on the active-matrix substrate 10 and is comprised an OPTICAL SENSORS 21 and couple OPTICAL SENSORS 21.Protection distribution 31 has conducting function and around light sensing apparatus 20, and in order to shielding action to be provided, isolated unnecessary undesired signal is for example from the undesired signal of the first contiguous shared distribution 41.
In other words, because light sensing apparatus 20 is responsive element, be subject to the interference of other external circuits (for example first function distribution 41 of present embodiment) beyond the light sensing apparatus 20 and influence the accuracy of its sensing result, or the swing that produces instantaneous time because of the interference of external circuit influences the degree of stability of its sensing result.Therefore in the mode of present embodiment, protection distribution 31 can reduce the degree that light sensing apparatus 20 is disturbed by the first shared distribution 41, and can record the sensing result that accuracy is higher or degree of stability is higher.Consequently, when display device is adjusted the light-source brightness of display device according to the intensity of the measured ambient lighting of light sensing apparatus 20 with correspondence, can provide than appropriate brightness and be difficult for flicker, and improve the quality that shows.The material of the protection distribution 31 in the present embodiment is not limited, and only wants the tool conducting function to get final product to produce the worn-out effect of screen, and it can be a metal level or an indium tin oxide layer.Protection distribution 31 can be held (ground) with being coupled to or be coupled to a fixing DC voltage.In addition, the layout type of the protection distribution 31 in the present embodiment does not limit as shown in Figure 1 yet and need surround around whole light sensing apparatus 20, belongs to category of the present invention even be effective around the light sensing apparatus 20 of a part yet.
Display device can also also comprise a driver 53, be located on the active-matrix substrate 10, in order to drive the image element circuit (not shown) on the active-matrix substrate 10, light sensing apparatus 20 is coupled to driver 53, so that driver 53 is adjusted the brightness of display device according to the sensing result of light sensing apparatus 20.Preferably, the two ends of protection distribution 31 also are coupled to an earth terminal 59 of driver 53.Protection distribution 31 sees through earth terminal 59 ground connection of driver 53, can reduce on active-matrix substrate 10 extra usefulness to be set so that the circuit of protection distribution 31 ground connection is simplified the circuit layout (layout) on the active-matrix substrate 10.In addition, active device substrate 10 can be divided into a viewing area Sa and a non-display area Sb, and the first shared distribution 41 is located at non-display area Sb, in present embodiment optical sensing module 20 and protection distribution 31 is located at non-display area Sb.
Fig. 2 is the vertical view of a substrate of the display device of another embodiment of the present invention.Fig. 3 is the sectional view along the AA line of Fig. 2.Fig. 2 embodiment is similar to Fig. 1 embodiment, below the different part of two embodiment only is described.In this embodiment, display device 11 comprises an active-matrix substrate 10 and faces a colored filter substrate 90 of active-matrix substrate 10.Protection distribution 31 sees through other circuit grounds, and display device 11 also comprises one first insulation course 52 and a second circuit.Second circuit can be located on the active-matrix substrate 10 for one second shared distribution 42, the second shared distributions 42, couples the first shared distribution 41 of being located at non-display area Sb, and extends to viewing area Sa.The second shared distribution 42 intersects to form an overlay region Sc across first insulation course 52 with light sensing signal wire 22.Generally speaking the thickness of first insulation course 52 is about
Present embodiment is made as the thickness of first insulation course 52 among the Sc of overlay region between about
～approximately
Between, use the degree of the signal stray light sensing apparatus 20 that reduces by the second shared distribution 42, improve the accuracy or the degree of stability of the sensing result of light sensing apparatus 20.In addition, protection distribution 31 also can dispose by layout type as shown in Figure 1, is not limited.
Fig. 4 is the vertical view of a substrate of the display device of one embodiment of the invention.Fig. 5 A is the sectional view along the BB line of Fig. 4.Fig. 5 B is the sectional view along the CC line of Fig. 4.Please refer to Fig. 4, Fig. 5 A and Fig. 5 B, display device 11 comprises the colored filter substrate 90 that an active-matrix substrate 10 reaches in the face of active-matrix substrate 10 in the present embodiment.Colored filter substrate 90 is provided with altogether with electrode 51.For light sensing apparatus 20, can be considered is the external circuit of light sensing apparatus 20 at this common electrode 51, can provide undesired signal to light sensing apparatus 20.Protection distribution 31 is located on the OPTICAL SENSORS 21 or light sensing signal wire 22 of light sensing apparatus 20, uses to make a part of protecting distribution 31 between common electrode 51 and OPTICAL SENSORS 21, shown in Fig. 5 B; And make its another part between common electrode 51 and light sensing signal wire 22, shown in Fig. 5 A.Protection distribution 31 has conducting function, and between light sensing apparatus 20 and common electrode 51, can produce the worn-out effect of screen, reduces the degree that light sensing apparatus 20 is disturbed by common electrode 51, and can record the sensing result that accuracy is higher or degree of stability is higher.In addition, can also make an end that protects distribution 31 be coupled to an earth terminal (not shown) of driver 53.
In present embodiment, protection distribution 31 can comprise that a conductive wires 55 and one second insulation course, 54, the second insulation courses 54 are between the OPTICAL SENSORS 21 of conductive wires 55 and light sensing apparatus 20, shown in Fig. 5 B; Or between the light sensing signal wire 22 of conductive wires 55 and light sensing apparatus 20, shown in Fig. 5 A.And conductive wires 55 can be a metal level or a tin indium oxide (ITO) layer.
Fig. 6 is that the display device of another embodiment of the present invention is along in the sectional view of the BB of Fig. 4 line.Fig. 6 embodiment is similar to Fig. 5 A and 5B embodiment, below the different part of two embodiment only is described.In the present embodiment, the light sensing signal wire 22 (or OPTICAL SENSORS 21) of light sensing apparatus 20 is located at a specific region of active-matrix substrate 10, make the light sensing signal wire 22 (or OPTICAL SENSORS 21) of light sensing apparatus 20 on colored filter substrate 90, form a forward projection region Sd, and this forward projection region Sd is underlapped in common electrode 51 along the normal vector of active device substrate 10.According to this design, the light sensing signal wire 22 of light sensing apparatus 20 is staggered with common electrode 51, can further reduce the degree that light sensing apparatus 20 is disturbed by common electrode 51.In addition, because light sensing signal wire 22 and common electrode 51 distance at interval, therefore second insulation course 54 also can omit with conductive wires 55, reduction is still arranged by common electrode 51 effects of jamming.
The above, it only is preferred embodiment of the present invention, when not limiting scope of the invention process with this, promptly the simple equivalent of being done according to claim of the present invention and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.Arbitrary embodiment of the present invention in addition or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not to be used for limiting interest field of the present invention.
Claims (10)
1. the optical sensing module of a tool safeguard function is arranged on one first substrate and with an external circuit and is separated with one at interval, it is characterized in that described optical sensing module comprises:
One light sensing apparatus is arranged on described first substrate, the light sensing signal wire that described light sensing apparatus comprises an OPTICAL SENSORS and couples described OPTICAL SENSORS; And
One protection distribution has conducting function and between the described light sensing apparatus of described external circuit and at least a portion.
2. the described optical sensing module of claim 1 is characterized in that, described protection distribution is between described external circuit and the described OPTICAL SENSORS or between described external circuit and described light sensing signal wire.
3. the described optical sensing module of claim 2 is characterized in that, described protection distribution is arranged on described first substrate and surrounds described OPTICAL SENSORS and described light sensing signal wire one at least.
4. the described optical sensing module of claim 1, it is characterized in that, described first real estate is to one second substrate, described external circuit is located at described second substrate, described protection distribution is located on the described part of described light sensing apparatus and is comprised a conductive wires and an insulation course, and described insulation course is between the described part of described conductive wires and described light sensing apparatus.
5. a display device is characterized in that, described display device comprises:
One active device substrate,
One colored filter substrate, described relatively active device substrate setting;
One first circuit, establish as on described first substrate with described colored filter substrate on one of them;
One light sensing apparatus is arranged on the described active device substrate and with described first circuit and is separated with one at interval;
One protection distribution has conducting function and between the part of described first circuit and described light sensing apparatus.
6. the described display device of claim 5, it is characterized in that, the light sensing signal wire that described light sensing apparatus comprises an OPTICAL SENSORS and couples described OPTICAL SENSORS, described protection distribution is between described first circuit and the described OPTICAL SENSORS or between described first circuit and described light sensing signal wire, and described light sensing apparatus and described protection distribution are positioned at a non-display area of described active device substrate.
7. the described display device of claim 5, it is characterized in that, described light sensing apparatus comprises that also a driver is located on the described active device substrate and is coupled to described first circuit and described light sensing apparatus, and described protection distribution is coupled to an earth terminal of described driver.
8. the described display device of claim 5 is characterized in that, described light sensing apparatus also comprises:
One first insulation course; And
One second circuit is arranged on the described active device substrate, and intersects to form an overlay region across described first insulation course and described light sensing signal wire, and the thickness of described first insulation course in the wherein said overlay region is between about
～approximately
Between, and described first circuit and described second circuit all are coupled to and use electrode altogether.
9. the described display device of claim 8, it is characterized in that, the described part of described light sensing apparatus forms a forward projection region along the normal vector of described active device substrate on described colored filter substrate, and described forward projection region is underlapped in described common electrode.
10. the described display device of claim 5, it is characterized in that, described first circuit is located at described colored filter substrate, described protection distribution is located on the described part of described light sensing apparatus, described protection distribution comprises a conductive wires and one second insulation course, described second insulation course is between the described part of described conductive wires and described light sensing apparatus, and described conductive wires comprises a metal level or an indium tin oxide layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128039A CN101840672A (en) | 2009-03-19 | 2009-03-19 | Light sensing module with protection function and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128039A CN101840672A (en) | 2009-03-19 | 2009-03-19 | Light sensing module with protection function and display device |
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| Publication Number | Publication Date |
|---|---|
| CN101840672A true CN101840672A (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910128039A Pending CN101840672A (en) | 2009-03-19 | 2009-03-19 | Light sensing module with protection function and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364567A (en) * | 2011-10-06 | 2012-02-29 | 友达光电股份有限公司 | Flat panel display |
| CN111223458A (en) * | 2020-01-06 | 2020-06-02 | 昆山龙腾光电股份有限公司 | Display module and electronic equipment |
| TWI722879B (en) * | 2020-04-22 | 2021-03-21 | 友達光電股份有限公司 | Display device |
-
2009
- 2009-03-19 CN CN200910128039A patent/CN101840672A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364567A (en) * | 2011-10-06 | 2012-02-29 | 友达光电股份有限公司 | Flat panel display |
| CN102364567B (en) * | 2011-10-06 | 2016-03-23 | 友达光电股份有限公司 | flat panel display |
| CN111223458A (en) * | 2020-01-06 | 2020-06-02 | 昆山龙腾光电股份有限公司 | Display module and electronic equipment |
| CN111223458B (en) * | 2020-01-06 | 2022-02-15 | 昆山龙腾光电股份有限公司 | Display module and electronic equipment |
| TWI722879B (en) * | 2020-04-22 | 2021-03-21 | 友達光電股份有限公司 | Display device |
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Application publication date: 20100922 |