CN100403113C - Backlight unit set and liquid crystal display device - Google Patents
Backlight unit set and liquid crystal display device Download PDFInfo
- Publication number
- CN100403113C CN100403113C CNB2005100348612A CN200510034861A CN100403113C CN 100403113 C CN100403113 C CN 100403113C CN B2005100348612 A CNB2005100348612 A CN B2005100348612A CN 200510034861 A CN200510034861 A CN 200510034861A CN 100403113 C CN100403113 C CN 100403113C
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- China
- Prior art keywords
- guide plate
- light source
- light guide
- groove
- liquid crystal
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Abstract
The present invention discloses a backlight module set and a liquid crystal display device. The liquid crystal display device comprises the backlight module set and a liquid crystal display panel corresponding to the backlight module set, wherein the backlight module set comprises a light guide plate and a light source, wherein the light guide plate comprises a light emitting surface, a bottom surface corresponding to the light emitting surface and a plurality of side surfaces, wherein every two adjacent side surfaces form an included angle. The light source comprises a corner angle corresponding to the included angle, wherein the included angle comprises a groove. The backlight module set and the liquid crystal display device of the present invention improve the light irradiating efficiency.
Description
[technical field]
The present invention relates to a kind of module backlight and liquid crystal indicator.
[background technology]
Module backlight is widely used in display device, as LCD monitor, mobile phone etc., but many display device are non-autoluminescences to be shown, mainly by controlling passing through or the obstructed realization of coming of light that external light source sends, therefore need corresponding backlight module or preceding optical mode group, this module backlight or preceding optical mode group can realize Presentation Function with photoconduction that external light source sent to display panel.
Seeing also Fig. 1, is the synoptic diagram of a kind of prior art module backlight.This module 10 backlight comprises a light guide plate 100 and a light source 120, and this light guide plate 100 comprises an incidence surface 102, and this light source 120 relative these incidence surfaces 102 are provided with, its be cold-cathode fluorescence lamp (Cold Cathode Fluorescent Lamp, CCFL).The effective length of illumination of the fluorescent tube of this module 10 backlight is shorter, and emitting brightness can not satisfy the brightness demand of existing display device.
Seeing also Fig. 2, is the synoptic diagram of another kind of prior art module backlight.This module 20 backlight comprises a light guide plate 200 and a light source 220, this light guide plate 200 comprises that two adjacent incidence surfaces 202,204 and are clipped in the corner 205 of this two incidence surface 202,204, this light source 220 is a L type cold-cathode fluorescence lamp, comprise a corner 222, it is these two incidence surfaces, 202,204 settings relatively.The light source 220 of this module 20 backlight is compared with the vertical bar shaped light source, and the effective length of illumination of its fluorescent tube increases, thereby makes the also corresponding increase of emitting brightness of entire aphototropism mould 20.But, because this module backlight 20 need be avoided the corner 205 of light guide plate 200 when installing, so as not to be collided, when pushing, the corner 205 and the L type light source corner 222 of light guide plate 200 sustain damage; And, because need to avoid the corner 205 of light guide plate 200, need to leave big distance between light guide plate 200 and the light source 220, the distance that the feasible light that sends from light source 220 enters light guide plate 200 increases, enter light guide plate 200 though there is light source cover (figure does not show) that portions of light is reflected again, the optical efficiency of going into of module 20 backlight descends.
[summary of the invention]
Can not protect light source, the inefficient shortcoming of light inlet for overcoming prior art module backlight, be necessary to provide a kind of and can protect light source, go into the high module backlight of optical efficiency.
Can not protect light source, the inefficient shortcoming of light inlet for overcoming the prior art liquid crystal indicator, be necessary to provide a kind of and can protect light source, go into the high liquid crystal indicator of optical efficiency.
One better embodiment provides a kind of module backlight, comprise a light guide plate and a light source, this light guide plate comprises an exiting surface, the bottom surface of one relative this exiting surface and a plurality of side, this two adjacent side forms an angle, and this light source comprises a turning, and this turning this angle relatively is provided with, wherein this angle comprises a groove, and this groove is accommodated the turning of this light source.
One better embodiment provides a kind of liquid crystal indicator, the display panels that comprises a module backlight and relative this module backlight, this module backlight comprises a light guide plate and a light source, this light guide plate comprises an exiting surface, the bottom surface of relative this exiting surface and a plurality of side, and this two adjacent side forms an angle, this light source comprises a turning, this turning this angle relatively is provided with, and wherein this angle comprises a groove, and this groove is accommodated the turning of this light source.
Compared with prior art, the present invention is provided with a groove in the corner of the light guide plate of module backlight, avoids being collided, when pushing, and the corner of light guide plate and light source turning sustain damage, and the light that light source sends has improved and has gone into optical efficiency by entering light guide plate than short distance.
[description of drawings]
Fig. 1 is the synoptic diagram of a kind of prior art module backlight.
Fig. 2 is the synoptic diagram of another kind of prior art module backlight.
Fig. 3 is the synoptic diagram of the present invention's module first embodiment backlight.
Fig. 4 is the synoptic diagram of the present invention's module first embodiment light guide plate backlight.
Fig. 5 is the projection enlarged diagram of the groove of the present invention's module first embodiment backlight at the light guide plate lower surface.
Fig. 6 is the projection enlarged diagram of the groove of the present invention's module first embodiment backlight in the light guide plate side.
Fig. 7 is the projection enlarged diagram of the groove of the present invention's module second embodiment backlight at the light guide plate lower surface.
Fig. 8 is the projection enlarged diagram of the groove of the present invention's module second embodiment backlight in the light guide plate side.
Fig. 9 is the projection enlarged diagram of the groove of the present invention's module the 3rd embodiment backlight at the light guide plate lower surface.
Figure 10 is the projection enlarged diagram of the groove of the present invention's module the 4th embodiment backlight in the light guide plate side.
Figure 11 is the projection enlarged diagram of the groove of the present invention's module the 5th embodiment backlight at the light guide plate lower surface.
Figure 12 is the projection enlarged diagram of the groove of the present invention's module the 5th embodiment backlight at the light guide plate lower surface.
Figure 13 is the synoptic diagram of liquid crystal indicator first embodiment of the present invention.
[embodiment]
See also Fig. 3 and Fig. 4, module 30 backlight comprises a light guide plate 300 and a light source 320, this light guide plate 300 comprises a plurality of sides 309 and a plurality of corner 305,306,307,308 that is clipped in 302,304 on this two surface on two opposite surfaces 302,304, one adjacent two surfaces 302,304 up and down, wherein a corner 305 comprises a groove 303, and this two surface 302,304 is parallel to each other.This light source 320 is L shaped cold-cathode fluorescence lamp, and its 322 relative these corners 305, turning are provided with.This groove 303 comprises face 315,316,317, and it runs through this two sides 309, and accommodates the turning 322 of this light source 320.This groove 303 is at the triangle that is projected as of lower surface 304, and as shown in Figure 5,309 projection is as shown in Figure 6 in the side for it.
The light that the light source 320 of this module 30 backlight sends is by entering light guide plate 300 than short distance; the light source cover (figure does not show) that is arranged on behind the light source 320 also can enter light guide plate 300 with the portions of light reflection; and because do not have the turning 322 of light source 320 and corner 305 collisions, the impaired risk of extruding of light guide plate 300, thereby protected module 30 backlight.
The present invention's module second embodiment backlight and first embodiment are roughly the same, its difference is be projected as shown in Figure 7 fan-shaped of this groove 403 at light guide plate lower surface (figure do not show), and it is the projection half elliptic as shown in Figure 8 of (figure does not show) in the light guide plate side.
The present invention's module the 3rd embodiment backlight and first embodiment are roughly the same, its difference is be projected as shown in Figure 9 the inscribe arc of this groove 503 at light guide plate lower surface (figure do not show), its in the light guide plate side (figure does not show) projection as shown in figure 10.
The present invention's module the 4th embodiment backlight and first embodiment are roughly the same, and its difference is be projected as shown in figure 11 the stepped appearance of this groove 603 at light guide plate lower surface (figure do not show).
The present invention's module the 5th embodiment backlight and first embodiment are roughly the same, and its difference is be projected as shown in figure 12 the rectangle of this groove 703 at light guide plate lower surface (figure do not show).
Seeing also Figure 13, is the synoptic diagram of liquid crystal indicator of the present invention.This liquid crystal indicator 3 comprises the display panels 31 of relative this module 30 backlight with of module backlight 30 among Fig. 3.
The present invention is provided with a groove at the light guide plate edge of module backlight, avoids being collided, when pushing, and the corner of light guide plate and light source turning are impaired, and the light that light source sends has improved and gone into optical efficiency by entering light guide plate than short distance.
It is described that module backlight of the present invention and liquid crystal indicator are not limited to present embodiment, can also be U-shaped as this light source, and this groove setting can also be according to light source and corresponding adjustment.
Claims (6)
1. module backlight, comprise a light guide plate and a light source, this light guide plate comprises an exiting surface, the bottom surface of one relative this exiting surface and a plurality of side, wherein, per two adjacent sides form an angle, this light source comprises a turning, this turning relative angle is provided with, and it is characterized in that: the angle that is oppositely arranged with this turning comprises a groove, and this groove is accommodated the turning of this light source.
2. module backlight as claimed in claim 1 is characterized in that: this bottom surface is parallel to this exiting surface, and this groove is projected as triangle or stepped appearance or rectangle or inscribe arc or circumscribed arc the bottom surface.
3. module backlight as claimed in claim 1 is characterized in that: this groove runs through adjacent two sides.
4. liquid crystal indicator, the display panels that comprises a module backlight and relative this module backlight, this module backlight comprises a light guide plate and a light source, and this light guide plate comprises an exiting surface, the bottom surface of relative this exiting surface and a plurality of side, wherein, per two adjacent sides form an angle, and this light source comprises a turning, and this turning relative angle is provided with, it is characterized in that: the angle that is oppositely arranged with this turning comprises a groove, and this groove is accommodated the turning of this light source.
5. liquid crystal indicator as claimed in claim 4 is characterized in that: this bottom surface is parallel to this exiting surface, and this groove is projected as triangle or stepped appearance or rectangle or inscribe arc or circumscribed arc the bottom surface.
6. liquid crystal indicator as claimed in claim 4 is characterized in that: this groove runs through adjacent two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100348612A CN100403113C (en) | 2005-05-24 | 2005-05-24 | Backlight unit set and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100348612A CN100403113C (en) | 2005-05-24 | 2005-05-24 | Backlight unit set and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1869782A CN1869782A (en) | 2006-11-29 |
| CN100403113C true CN100403113C (en) | 2008-07-16 |
Family
ID=37443479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100348612A Expired - Fee Related CN100403113C (en) | 2005-05-24 | 2005-05-24 | Backlight unit set and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100403113C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809307A (en) * | 2012-11-08 | 2014-05-21 | 乐金显示有限公司 | Curved liquid crystal display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10333142A (en) * | 1997-05-30 | 1998-12-18 | Toshiba Lighting & Technol Corp | Backlight and liquid crystal display device using the same |
| US6108060A (en) * | 1992-07-13 | 2000-08-22 | Seiko Epson Corporation | Surface-type illumination device and liquid crystal display |
| CN1556431A (en) * | 2003-12-30 | 2004-12-22 | 友达光电股份有限公司 | Side light source type backlight assembly |
| CN1584698A (en) * | 2004-05-28 | 2005-02-23 | 友达光电股份有限公司 | Structure and method for improving brightness of dark area in backlight module |
| CN2800322Y (en) * | 2005-05-20 | 2006-07-26 | 群康科技(深圳)有限公司 | Light guide plate and back light module |
-
2005
- 2005-05-24 CN CNB2005100348612A patent/CN100403113C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6108060A (en) * | 1992-07-13 | 2000-08-22 | Seiko Epson Corporation | Surface-type illumination device and liquid crystal display |
| JPH10333142A (en) * | 1997-05-30 | 1998-12-18 | Toshiba Lighting & Technol Corp | Backlight and liquid crystal display device using the same |
| CN1556431A (en) * | 2003-12-30 | 2004-12-22 | 友达光电股份有限公司 | Side light source type backlight assembly |
| CN1584698A (en) * | 2004-05-28 | 2005-02-23 | 友达光电股份有限公司 | Structure and method for improving brightness of dark area in backlight module |
| CN2800322Y (en) * | 2005-05-20 | 2006-07-26 | 群康科技(深圳)有限公司 | Light guide plate and back light module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809307A (en) * | 2012-11-08 | 2014-05-21 | 乐金显示有限公司 | Curved liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1869782A (en) | 2006-11-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080716 Termination date: 20160524 |