CN100403127C - Backlight module and LCD device - Google Patents
Backlight module and LCD device Download PDFInfo
- Publication number
- CN100403127C CN100403127C CNB2005101017960A CN200510101796A CN100403127C CN 100403127 C CN100403127 C CN 100403127C CN B2005101017960 A CNB2005101017960 A CN B2005101017960A CN 200510101796 A CN200510101796 A CN 200510101796A CN 100403127 C CN100403127 C CN 100403127C
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- light
- guide plate
- light guide
- incidence surface
- emitting component
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Abstract
The invention relates to a backlight module pattern assembly and a liquid crystal display device. The backlight module pattern assembly includes a light conducting plate, a framework housing the light conducting plate and at least one light-emitting component. The light conducting plate includes a light-in surface, the light-emitting component is set corresponding with the light-in surface, the framework contains at least one side wall, at least one resilient is set on the side wall, the resilient elastic contacted with the light conducting plate or the light-emitting component. The backlight module pattern assembly possesses higher light-out brightness.
Description
[technical field]
The present invention relates to the liquid crystal indicator of a kind of module backlight and this module backlight of employing.
[background technology]
Because the liquid crystal itself in the display panels is not had a characteristics of luminescence, therefore for reaching display effect, need provide a planar light source device to realize Presentation Function to display panels, as module backlight, its function be to provide the area source that brightness is abundant and be evenly distributed for display panels.
The module backlight 100 that a kind of prior art adopted as shown in Figure 1, this module 100 backlight comprises that a light guide plate 110, accommodates framework 120, a circuit board 130 of this light guide plate 110 and be arranged on a plurality of light-emitting components 140 of this circuit board 130.
This light guide plate 110 comprises an exiting surface 111, one and the incidence surface 112 that intersects of this exiting surface 111 and the two relative side 114 adjacent with this incidence surface 112, this two relative side 114 is provided with a plurality of projections 115, the thickness of this projection 115 is less than the thickness of this light guide plate 110, and a surface of this projection 115 is concordant with this exiting surface 111.This framework 120 comprise a plurality of to should projection 115 draw-in grooves that are provided with 122 and accommodate a plurality of breach 124 of light-emitting component 140.
When this framework 120 is assembled with light-emitting component 140, circuit board 130 and light guide plate 110, a plurality of projections 115 of this light guide plate 110 match with a plurality of draw-in grooves 122 of this framework 120, this light guide plate 110 is retained in this framework 120, this circuit board 130 is arranged on this framework 120, and makes that these a plurality of light-emitting components 140 lay respectively in these a plurality of breach 124.
This framework 120 is generally the glue frame, this light-emitting component 140 be generally light emitting diode (Light Emitting Diode, LED), this circuit board 130 be generally flexible circuit board (Flexible Printed Circuit Board, FPC).
Please refer to Fig. 2, it is the light emitting diode known and the distance X between the light guide plate incidence surface and the graph of a relation of the relative emitting brightness Y of light guide plate, wherein the unit of distance X is mm, the unit of emitting brightness Y is cd/m2 relatively, distance X is big more as can be seen from Figure, emitting brightness Y is more little relatively, and promptly the light utilization efficiency of light emitting diode is low more.
Because the distance between the above-mentioned light-emitting component and the incidence surface of light guide plate is to the influence of the emitting brightness of light guide plate, when adopting above-mentioned module 100 backlight, with there are the following problems, at first, because the restriction of existing manufacturing capacity, the size of the breach 124 of this framework 120 can not be held this light-emitting component 140 just, after promptly finishing assembling, there is the gap between this light-emitting component 140 and this light guide plate 110, this gap will influence the emitting brightness of this light guide plate 110, secondly, exiting surface at light-emitting component 140 is under the situation on plane, because light-emitting component 140 is arranged on the flexible circuit board 130, this flexible circuit board 130 is easy to deform, be difficult to keep the planarization of self, the generation of angle between the incidence surface 111 of the exiting surface of this light-emitting component 140 and light guide plate 110 will very easily be caused, when particularly adopting a plurality of light-emitting component 140, not only can produce angle between the incidence surface 111 of the exiting surface of this light-emitting component 140 and light guide plate 110, and this angle also may have nothing in common with each other, thereby influences the homogeneity of the emitting brightness of this module 100 backlight.
[summary of the invention]
In order to solve the problem that module emitting brightness backlight of the prior art can't meet the demands, be necessary to provide a kind of module backlight with higher emitting brightness.
Problem for the module emitting brightness backlight that solves liquid crystal indicator of the prior art can't meet the demands is necessary to provide a kind of liquid crystal indicator with higher emitting brightness.
A kind of module backlight, it comprises that a light guide plate, accommodates the framework of this light guide plate, at least one elastic component and at least one light-emitting component.This light guide plate comprises an incidence surface, this light-emitting component is the incidence surface setting of this light guide plate relatively, this framework comprises relative two side, contiguous this incidence surface of one sidewall, another sidewall is away from this incidence surface, the sidewall contiguous with this light guide plate incidence surface is provided with the groove of accommodating this light-emitting component, sidewall away from this light guide plate incidence surface is provided with at least one in order to accommodate the putting hole of this elastic component, this elastic component is placed in this putting hole, this elastic component compresses this light guide plate, and this light guide plate is contacted with this light-emitting component.
A kind of module backlight, it comprises that a light guide plate, accommodates the framework of this light guide plate, at least one elastic component and at least one light-emitting component.This light guide plate comprises an incidence surface, this light-emitting component is the incidence surface setting of this light guide plate relatively, this framework comprises relative two side, contiguous this incidence surface of one sidewall, another sidewall is away from this incidence surface, is provided with the groove of accommodating this light-emitting component and at least one in order to accommodating the putting hole of this elastic component with the contiguous sidewall of this light guide plate incidence surface, and this putting hole is to should groove, this elastic component is placed in this putting hole, and this elastic component compresses this light-emitting component and contacts with this light guide plate incidence surface.
A kind of liquid crystal indicator, it comprises the liquid crystal panel that relative this module backlight with of a module backlight is provided with, this module backlight comprises that a light guide plate, accommodates the framework of this light guide plate, at least one elastic component and at least one light-emitting component.This light guide plate comprises an incidence surface, this light-emitting component is the incidence surface setting of this light guide plate relatively, this framework comprises relative two side, contiguous this incidence surface of one sidewall, another sidewall is away from this incidence surface, the sidewall contiguous with this light guide plate incidence surface is provided with the groove of accommodating this light-emitting component, sidewall away from this light guide plate incidence surface is provided with at least one in order to accommodate the putting hole of this elastic component, this elastic component is placed in this putting hole, this elastic component compresses this light guide plate, and this light guide plate is contacted with this light-emitting component.
Compared to prior art, because of liquid crystal indicator of the present invention and module backlight comprise an elastic component, this elastic component can provide elastic acting force in assembling process and after the assembling, compress light guide plate or light-emitting component, reduce the distance between light-emitting component and the light guide plate incidence surface, and be under the situation on plane at the exiting surface of light-emitting component, can make the exiting surface of light-emitting component and the incidence surface of light guide plate paste neat by this elastic acting force, reduce the exiting surface of light-emitting component and the angle between the light guide plate incidence surface, thereby improve the emitting brightness and the uniformity coefficient of module backlight and liquid crystal indicator.
[description of drawings]
Fig. 1 is a prior art liquid crystal indicator synoptic diagram.
Fig. 2 is the graph of a relation of the distance between light-emitting component and the light guide plate incidence surface and the relative emitting brightness of light guide plate among Fig. 1.
Fig. 3 is the present invention's module first embodiment synoptic diagram backlight.
Fig. 4 is the three-dimensional assembly diagram of framework, elastic component, light guide plate, circuit board and the light-emitting component of module backlight shown in Figure 3.
Fig. 5 is the enlarged diagram of V part shown in Figure 4.
Fig. 6 is the present invention's module second embodiment synoptic diagram backlight.
Fig. 7 is the three-dimensional assembly diagram of framework, elastic component, light guide plate, circuit board and the light-emitting component of module backlight shown in Figure 6.
Fig. 8 is the enlarged diagram of VIII part shown in Figure 7.
Fig. 9 is the present invention's module the 3rd embodiment synoptic diagram backlight.
Figure 10 is a liquid crystal indicator synoptic diagram of the present invention.
[embodiment]
With reference to Fig. 3, be the present invention's module first embodiment synoptic diagram backlight, this module 200 backlight comprises brightening piece 210 on, once brightening piece 220, a diffusion sheet 230, a plurality of elastic component 240, a light guide plate 250, a circuit board 260, a plurality of light-emitting components 270, of being arranged on this circuit board 260 are accommodated the framework 280 and a reflector plate 290 of this light guide plate 250.
This light guide plate 250 comprise an incidence surface 251, an exiting surface that links to each other with this incidence surface 251 252, one with these exiting surface 252 opposed bottom surface 253 and the two relative side 254 that links to each other with this incidence surface 251, this two relative side 254 is provided with a plurality of projections 255, the thickness of this projection 255 is less than the thickness of this light guide plate 250, and a surface of this projection 255 is concordant with this exiting surface 252.This circuit board 260 comprises a conductor strip 261.
This framework 280 comprises a first side wall 281, one second sidewall 282, one the 3rd sidewall 283, the 4th sidewall 284 and can be so that the breach 285 that the conductor strip 261 of this circuit board 260 is stretched out.This first side wall 281, second sidewall 282, the 3rd sidewall 283 link to each other successively with the 4th sidewall 284 and surround a receiving space, to accommodate this light guide plate 250 in it.This first side wall 281 has a plurality of grooves 286, in order to accommodate this a plurality of light-emitting components 270,284 pairs of this second sidewall 282 and the 4th sidewalls should light guide plate 250 a plurality of projections 255 a plurality of draw-in grooves 287 are set, the size of this draw-in groove 287 is greater than the size of this projection 255, the 3rd sidewall 283 is provided with a plurality of putting holes 288, in order to accommodating this elastic component 240, the degree of depth of this putting hole 288 is in length under the free state less than this elastic component 240.
With reference to Fig. 4 and Fig. 5, Fig. 4 is the three-dimensional assembly diagram of this framework 280, light guide plate 250, a plurality of elastic component 240, a plurality of light-emitting component 270 and circuit board 260 in the lump, and Fig. 5 is the enlarged diagram of V part shown in Figure 4.During assembling, these a plurality of elastic components 240 place respectively in a plurality of putting holes 288 of this framework 280, the projection 255 of this light guide plate 250 cooperates with the draw-in groove 287 of this framework 280, make this light guide plate 250 be retained on the receiving space of this framework 280, this circuit board 260 is arranged on this framework 280, and make a plurality of light-emitting components 270 that are arranged on this circuit board 260 lay respectively in a plurality of grooves 286 of this framework 280, the conductor strip 261 of this circuit board 260 is stretched out this framework 280 by this breach 285.240 pairs of these light guide plate 250 of these a plurality of elastic components apply elastic acting force, and this light guide plate 250 is promoted towards this light-emitting component 270, make the incidence surface 251 of this light guide plate 250 closely contact with this light-emitting component 270.Because the size of this draw-in groove 287 is greater than the size of this projection 255, when these a plurality of elastic components 240 promoted this light guide plate 250, this projection 255 can move in this draw-in groove 287, and can not hinder moving of this light guide plate 250.
This module 200 backlight is in when assembling, and reflector plate 290 is arranged on bottom surface 253 1 sides of this light guide plate 250, in addition with diffusion sheet 230, brightening piece 220 and last brightening piece 210 are successively set on exiting surface 252 1 sides of this light guide plate 250 down.
Above-mentioned circuit board 260 is generally flexible circuit board, and this circuit board 260 is used for electric energy is imported this light-emitting component 270, and this light-emitting component 270 is generally light emitting diode, and this framework 280 is generally the glue frame.
Compared to prior art, this module 200 backlight has elastic component 240, the drift of this elastic component 240 is greater than the degree of depth of this putting hole 288, this elastic component 240 is squeezed this light guide plate 250 is applied elastic acting force when then assembling, this light guide plate 250 is promoted towards this light-emitting component 270, reduce the distance between the incidence surface 251 of light-emitting component 270 and light guide plate 250, and be under the situation on plane at the exiting surface of light-emitting component 270, can make the exiting surface of light-emitting component 270 and the incidence surface 251 of light guide plate 250 paste neat by this elastic acting force, reduce the angle between the incidence surface 251 of the exiting surface of light-emitting component 270 and light guide plate 250, thereby improve the emitting brightness and the uniformity coefficient of module 200 backlight.
With reference to Fig. 6, it is the present invention's module second embodiment synoptic diagram backlight, this module 300 backlight is with this first embodiment module 200 differences backlight: the 3rd sidewall 383 of this framework 380 is not provided with putting hole, putting hole 388 is arranged on this first side wall 381, and 388 pairs of this putting holes should groove 386, and the draw-in groove 387 of this framework 380 matches with the projection 355 of this light guide plate 350.
With reference to Fig. 7 and Fig. 8, Fig. 7 is the three-dimensional assembly diagram of this framework 380, light guide plate 350, a plurality of elastic component 340, a plurality of light-emitting component 370 and circuit board 360 in the lump, and Fig. 8 is the enlarged diagram of VIII part shown in Figure 7.During assembling, these a plurality of elastic components 340 place respectively in a plurality of putting holes 388 of this framework 380, the projection 355 of this light guide plate 350 cooperates with the draw-in groove 387 of this framework 380, make this light guide plate 350 be retained on the receiving space of this framework 380, because the gap of this elastic component 340 under undeformed situation still and between this light guide plate 350 is less than the size of this light-emitting component 370, when populated circuit board 360, need earlier elastic component 340 to be spurred towards the direction away from light guide plate 350, reserve enough receiving spaces, make this light-emitting component 370 between this elastic component 340 and this light guide plate 350, after the conductor strip 361 of this circuit board 360 is stretched out this framework 380 by this breach 385, cancel the pulling function power that adds to elastic component 340 again, this elastic component 340 promptly compresses this light-emitting component 370.
Compared to prior art, the module backlight 300 of this embodiment has elastic component 340, the drift of this elastic component 340 is greater than the degree of depth of this putting hole 388, this elastic component 340 is squeezed this light-emitting component 370 is applied elastic acting force when then assembling, the incidence surface 351 of this light-emitting component 370 towards this light guide plate 350 promoted, reduce the distance between the incidence surface 351 of light-emitting component 370 and light guide plate 350, and be under the situation on plane at the exiting surface of light-emitting component 370, can make the exiting surface of light-emitting component 370 and the incidence surface 351 of light guide plate 350 paste neat by this thrust, reduce the angle between the incidence surface 351 of the exiting surface of light-emitting component 370 and light guide plate 350, thereby improve the emitting brightness and the uniformity coefficient of module 300 backlight.
With reference to Fig. 9, be the present invention's module the 3rd embodiment synoptic diagram backlight.This module 400 backlight is with this first embodiment module 200 differences backlight: on this first side wall 481 and the 3rd sidewall 483 putting hole 488 is set all, to accommodate this elastic component 440.The degree of depth of this putting hole 488 is in length under the free state less than this elastic component 440, then this elastic component 440 promote these light-emitting components 470 and light guide plate 450 close to each other.
With reference to Figure 10, be liquid crystal indicator 500 synoptic diagram of the present invention.This liquid crystal indicator 500 comprises the liquid crystal panel 590 that relative this module 200 backlight with of an above-mentioned module 200 backlight is provided with.
Claims (7)
1. module backlight, it comprises a light guide plate, one accommodates the framework of this light guide plate, at least one elastic component and at least one light-emitting component, this light guide plate comprises an incidence surface, this light-emitting component is the incidence surface setting of this light guide plate relatively, this framework comprises relative two side, contiguous this incidence surface of one sidewall, another sidewall is away from this incidence surface, the sidewall contiguous with this light guide plate incidence surface is provided with the groove of accommodating this light-emitting component, it is characterized in that: the sidewall away from this light guide plate incidence surface is provided with at least one in order to accommodate the putting hole of this elastic component, this elastic component is placed in this putting hole, and this elastic component compresses this light guide plate, and this light guide plate is contacted with this light-emitting component.
2. module backlight as claimed in claim 1, it is characterized in that: this relative two side all is provided with putting hole, this elastic component is arranged in this putting hole, this elastic component compresses this light guide plate or light-emitting component, this light guide plate is contacted with this light-emitting component, and the drift of this elastic component is greater than the hole depth of this putting hole.
3. module backlight as claimed in claim 1, it is characterized in that: this light guide plate comprises the two relative side that links to each other with this incidence surface, this two relative side is provided with a plurality of projections, and this framework is provided with and the corresponding a plurality of draw-in grooves of these a plurality of projections, and this projection engages mutually with this draw-in groove.
4. module backlight as claimed in claim 3 is characterized in that: this draw-in groove size is greater than this size of lug.
5. module backlight as claimed in claim 1 is characterized in that: it further comprises a circuit board, and this light-emitting component is arranged on this circuit board, and this light-emitting component is a light emitting diode.
6. module backlight, it comprises a light guide plate, one accommodates the framework of this light guide plate, at least one elastic component and at least one light-emitting component, this light guide plate comprises an incidence surface, this light-emitting component is the incidence surface setting of this light guide plate relatively, this framework comprises relative two side, contiguous this incidence surface of one sidewall, another sidewall is away from this incidence surface, the sidewall contiguous with this light guide plate incidence surface is provided with the groove of accommodating this light-emitting component, it is characterized in that: the sidewall contiguous with incidence surface is provided with at least one in order to accommodate the putting hole of this elastic component, this putting hole is to should groove, this elastic component is placed in this putting hole, and this elastic component compresses this light-emitting component and contacts with this light guide plate incidence surface.
7. liquid crystal indicator, it comprises the liquid crystal panel that relative this module backlight with of a module backlight is provided with, this module backlight is the described module backlight of arbitrary claim in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101017960A CN100403127C (en) | 2005-11-25 | 2005-11-25 | Backlight module and LCD device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101017960A CN100403127C (en) | 2005-11-25 | 2005-11-25 | Backlight module and LCD device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1971376A CN1971376A (en) | 2007-05-30 |
| CN100403127C true CN100403127C (en) | 2008-07-16 |
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ID=38112269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101017960A Expired - Fee Related CN100403127C (en) | 2005-11-25 | 2005-11-25 | Backlight module and LCD device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100403127C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI437326B (en) * | 2010-12-30 | 2014-05-11 | Au Optronics Corp | A light guide plate locating design in backlight module |
| US9417473B2 (en) * | 2012-02-06 | 2016-08-16 | Sharp Kabushiki Kaisha | Display device with a frame holding a drive board and television device having the display device |
| CN104456193A (en) * | 2014-11-17 | 2015-03-25 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN105096844A (en) * | 2015-08-20 | 2015-11-25 | 武汉华星光电技术有限公司 | Panel and electronic device |
| CN105674145A (en) | 2016-01-05 | 2016-06-15 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN207937735U (en) | 2018-03-28 | 2018-10-02 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| CN109445152A (en) * | 2018-11-06 | 2019-03-08 | 惠州市华星光电技术有限公司 | Panel center, display panel and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164903A1 (en) * | 2002-01-24 | 2003-09-04 | Ken Saito | Liquid crystal display device |
| CN1595259A (en) * | 2003-09-11 | 2005-03-16 | 友达光电股份有限公司 | Backlight assembly |
| JP2005077755A (en) * | 2003-08-29 | 2005-03-24 | Optrex Corp | Frame case |
| TWM268609U (en) * | 2004-12-10 | 2005-06-21 | Innolux Display Corp | Back light module and liquid crystal display device |
| TWM270369U (en) * | 2004-11-26 | 2005-07-11 | Innolux Display Corp | Back light module and liquid crystal display device |
-
2005
- 2005-11-25 CN CNB2005101017960A patent/CN100403127C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164903A1 (en) * | 2002-01-24 | 2003-09-04 | Ken Saito | Liquid crystal display device |
| JP2005077755A (en) * | 2003-08-29 | 2005-03-24 | Optrex Corp | Frame case |
| CN1595259A (en) * | 2003-09-11 | 2005-03-16 | 友达光电股份有限公司 | Backlight assembly |
| TWM270369U (en) * | 2004-11-26 | 2005-07-11 | Innolux Display Corp | Back light module and liquid crystal display device |
| TWM268609U (en) * | 2004-12-10 | 2005-06-21 | Innolux Display Corp | Back light module and liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1971376A (en) | 2007-05-30 |
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