CN201779541U - Back light module structure - Google Patents
Back light module structure Download PDFInfo
- Publication number
- CN201779541U CN201779541U CN201020169533XU CN201020169533U CN201779541U CN 201779541 U CN201779541 U CN 201779541U CN 201020169533X U CN201020169533X U CN 201020169533XU CN 201020169533 U CN201020169533 U CN 201020169533U CN 201779541 U CN201779541 U CN 201779541U
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- wedge shape
- lgp
- framework
- reflector plate
- light emitting
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Abstract
The utility model provides a back light module structure, which comprises a framework, a wedge-shaped light guide plate and a light emitting assembly. The framework is a hollow frame body. The frontal face of a lower beam of the framework is provided with a groove. The wedge-shaped light guide plate is provided with a light intake face and a light outgoing face. One end of the light intake face of the wedge-shaped light guide plate is a wedge-shaped end with preset gradient and length. The wedge-shaped light guide plate is embedded in the framework. The light emitting assembly comprises a flexible circuit board. One face of the flexible circuit board, which is provided with a light emitting diode, is fixed on the frontal face of the lower beam of the framework and the light emitting diode is arranged in the groove of the frontal face. The light emitting face of the light emitting diode faces the light intake face of the wedge-shaped light guide plate. The back light module structure further comprises a two-sided white reflective sheet which is arranged at the back side of the preset gradient of the wedge-shaped light guide plate and is parallel to the light intake face of the wedge-shaped light guide plate. The utility model can effectively solve the technical problem that the whole front end of a lamp holder is very bright, which leads to bad display effect.
Description
Technical field
The utility model belongs to field of backlights, relates in particular to the supplementary structure design of LGP in a kind of module backlight.
Background technology
LCD (Liquid Crystal Display, be called for short LCD) as a kind of passive luminous display unit, its show mainly by the control external light source whether pass through realize, therefore need external light source and corresponding guiding device (as module backlight), this module backlight can be with the beam direction display panels that external light source sent.
Along with LCD constantly develops towards ultra-thinization direction, for the requirement of module backlight also attenuate thereupon, the center thickness of module backlight requires more and more thin typeization.For example, develop at present among the LCD more than 2.4 inches, the center thickness of its module backlight just has 0.7mm, and when design, the thickness requirement of LGP is below 0.35mm, and is and for the requirement of brightness also very high.Certainly, list can be accomplished from existing LGP technological layer, is a challenge but select for use for the light emitting diode (Light-emitting Diode is called for short LED) of the use that matches.For this type of project,,, no problem basically for effect before the lamp of handling module backlight if select the LED of 0.4mm thickness for use.But often the situation of Chu Xianing is, because the LED brightness of 0.4mm thickness is lower than the LED brightness of 0.6mm thickness, the brightness of module finished product backlight can't reach requirement of client; Moreover, the LED manufacturing process relative complex that the LED that 0.4mm is thick is thicker than 0.6mm, cost is relatively costly, and quantum of output is little, can't satisfy order demand in enormous quantities.Therefore do not have advantage on technology and the cost with the thick LED of 0.4mm, but on the thick LGP of 0.35mm, use the thick LED of 0.6mm, this will make just the difference in height of 0.25mm between LGP and the LED, and this tin point that produces when also not comprising welding LED highly.Thus, this difference in height can be given a series of problems such as hot spot, shadow, skew ray bundle of bringing backlight.
How does this problem solve so? please refer to Fig. 1, in the prior art, generally can adopt LGP 1 adjacent light emitting source place is designed to taper structure solves, an end parts that is about to LGP is designed to tapered end.But find that in the solution of reality when the end thickness that adjacent light emitting source place is designed to taper structure was thickeied about 0.25mm by 0.35mm, socket front end integral body was very bright, display effect is relatively poor, finally influences the uniformity of whole LCD display effect.
The utility model content
The utility model is very bright at LGP socket front end integral body in the prior art, causes the relatively poor technical problem of display effect, and a kind of supplementary structure design of LGP is provided, and effectively solves the problem of the preceding effect of die set light source backlight.
Problem of the present utility model solves by the following technical programs:
A kind of back light module unit structure comprises framework, wedge shape LGP and luminescence component, and described framework is the framework of a hollow, and the front of described framework sill is provided with groove; Described wedge shape LGP has an incidence surface and an exiting surface, and an end of wedge shape LGP incidence surface is the tapered end with the default gradient and length, and described wedge shape LGP is embedded in the described framework; Described luminescence component includes FPC, the one side that described FPC is provided with light emitting diode is fixed in the front of described framework sill, and described light emitting diode is contained in the groove in described front, and the light-emitting area of described light emitting diode is towards the incidence surface of described wedge shape LGP; Wherein, also comprise the two-sided white reflector plate that is arranged at the default gradient phase back side of wedge shape LGP, described two-sided white reflector plate is concordant with the incidence surface of wedge shape LGP.
In the back light module unit structure that the utility model provides, described two-sided white reflector plate is located at the back side of the default gradient of wedge shape LGP, paste with the wedge shape LGP then and be fixed on the framework, thereby bed hedgehopping the thickness of wedge shape LGP incidence surface, light is penetrated from the gap of LGP and light emitting diode difference in height to be gone, both solved hot spot, problems such as skew ray bundle, it is very bright to have solved LGP socket front end integral body again, display effect is relatively poor, uneven problem, simultaneously the incident ray of light emitting diode is fully utilized, the overall brightness of back light module unit structure has very big lifting.
Description of drawings
Fig. 1 is the LGP schematic diagram of the wedge structure that provides of prior art;
Fig. 2 is the supplementary structure principle schematic of the wedge shape LGP that provides of the utility model;
Fig. 3 is the schematic perspective view of the supplementary structure of the wedge shape LGP that provides of the utility model;
Fig. 4 is the perspective exploded view of the supplementary structure of the wedge shape LGP that provides of the utility model;
Fig. 5 be the utility model provide module reverse side backlight assembling the time schematic diagram;
Fig. 6 is the three-dimensional decomposition texture schematic diagram of the module backlight that provides of the utility model.
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Please refer to shown in Figure 1: the inventor finds by scrutinizing the back, because the thickness of wedge shape LGP tapered end and the tail end relative with tapered end differs bigger, produce great slope, the light that causes light emitting diode to send, mainly concentrate on 11 zone and 12 zones, so just can cause socket front end integral body very bright, the phenomenon that display effect is relatively poor.Simultaneously the gradient of tapered end is bigger, and the double faced adhesive tape adhered area reduced when FPC contacted with the gradient, also can the viscosity of the double faced adhesive tape of sticking flexible wiring board be exerted an influence.By aforementioned analysis, the utility model has well solved this technical problem from the supplementary structure design of LGP.
Please refer to shown in Fig. 2-6: a kind of back light module unit structure, comprise framework 2, wedge shape LGP 1 and luminescence component 8, described framework is the framework of a hollow, the front of described framework sill is provided with groove 21; Described wedge shape LGP has an incidence surface and an exiting surface, and an end of wedge shape LGP incidence surface is the tapered end with the default gradient 102 and length, and described wedge shape LGP is embedded in the described framework; Described luminescence component includes FPC, the one side that described FPC is provided with light emitting diode is fixed in the front of described framework sill, and described light emitting diode is contained in the groove in described front, and the light-emitting area of described light emitting diode is towards the incidence surface of described wedge shape LGP; Wherein, also comprise the two-sided white reflector plate 100 that is arranged at the default gradient phase back side of wedge shape LGP, described two-sided white reflector plate is concordant with the incidence surface of wedge shape LGP.Two-sided white reflector plate is when mounting, and the cross section of two-sided white reflector plate is answered the sawtooth of concordant LGP, and the left justify of promptly two-sided white reflector plate and LGP please refer to shown in Figure 2; Otherwise the function that two-sided white reflector plate rose will lose efficacy.
Described two-sided white reflector plate is pasted fixing by the opposing plane of the default gradient of double faced adhesive tape 101 and wedge shape LGP, to realize mounting of two-sided white reflector plate.
The structure external form of described two-sided white reflector plate is decided according to the frame structure in the module backlight, and its width is 1.2-1.5mm.Please refer to shown in Fig. 3 and 4, in general, only need to paste double faced adhesive tape 101, fix getting final product then by double faced adhesive tape and wedge shape LGP at the two ends of described two-sided white reflector plate 100.And require relatively stricter client for drop test, can increase the paste position of double faced adhesive tape, such as also increasing double faced adhesive tape, so that two-sided white reflector plate and wedge shape LGP is fixing more firm in the centre of two-sided white reflector plate 100 (being the position between the adjacent light emitting diode).Selecting for use of two-sided white reflector plate can be selected SW83G series at present general on the module industry market backlight, E20 series reflector plate.
For effect before the light source that can improve module backlight better, the thickness of described two-sided white reflector plate is 0.05-0.1mm.If the thickness of two-sided white reflector plate less than 0.05mm, then has no idea to reduce the difference in height of light emitting diode and LGP source ends, effect improved before the light source can be too unobvious; If the thickness of two-sided white reflector plate can be too high LGP source ends jack-up greater than 0.1mm, cause the groove depth of follow-up assembling blooming piece too shallow, blooming piece is not easy to assembly.
Further in order to solve the technical problem that exists in the prior art, when design wedge shape LGP, the tapered end of LGP differs with the tail end thickness relative with tapered end can not be too big, generally be controlled at 0.08-0.12mm, and then the aforesaid two-sided white reflector plate 100 of supporting use, come the thickness of bed hedgehopping wedge shape LGP incidence surface, light is penetrated from the gap of LGP and light emitting diode difference in height, so both solved hot spot, problems such as skew ray bundle, it is very bright simultaneously also to have solved socket front end integral body, the relatively poor uneven phenomenon of display effect also makes the light of light emitting diode incident be fully used simultaneously, and brightness has very big lifting.
Please refer to shown in Figure 5, assembling sequence is as follows in actual production: after this two-sided white reflector plate 100 and wedge shape LGP 1 are bonding, be fixed in the framework 2, the exiting surface of wedge shape LGP is towards following, slope position is pasted with the two-sided tape of fixing flexible wiring board, is fixed with light emitting diode on the described FPC; Then at the serial blooming piece and the black and white shading rubber belt of some diffusion light of the exiting surface sequential cascade of LGP and collected light, such as can be fitted with down in proper order diffusion barrier, down brightness enhancement film, go up brightness enhancement film, black and white shading two-sided tape; Simultaneously, in a side relative with the LGP exiting surface, promptly the back of two-sided white reflector plate is provided with the reflector plate of reflection ray.
Like this, because this two-sided white reflector plate has carried out certain bed hedgehopping with the wedge shape position, transition bang path distance for light from zone 11 to zone 12 prolongs to some extent, make the incident ray of light emitting diode be reflected by the wedge shape LGP as much as possible and absorb the viewing area, whole visual effect is evenly shown, can not produce very strong bright spot and light beam because of light compiles in 12 zones, give people's visual impact decreased sensation, make that the illumination effect of entire aphototropism mould is even, absorbed simultaneously the emitting brightness of light emitting diode to greatest extent, greatly reduce the optical energy loss of LED source, thereby make module backlight particularly the quality of ultra-thin module backlight substantial improvement and lifting are arranged, saved the application cost of light emitting diode.Simultaneously, two-sided white reflector plate and wedge shape LGP form as a whole, in the operation process of module backlight, also are easy to assembling, and production efficiency also is improved.
Please refer to shown in Figure 6, the three-dimensional decomposition texture schematic diagram of the module backlight that provides for the utility model.This module backlight comprises framework 2, wedge shape LGP 1, luminescence component 8, double faced adhesive tape 9, reflector plate 3, following diffusion barrier 4, following brightness enhancement film 5, goes up brightness enhancement film 6, black and white shading rubber belt 7 and two-sided white reflector plate 100.Described reflector plate 3 is fixed in the back side of framework 2, the site face of wedge shape LGP 1 towards reflector plate 3 and with its applying, as the face of incidence surface towards groove 21, exiting surface with wedge shape LGP 1 is that front (sightingpiston when normally using) is embedded in the framework 2, described two-sided white reflector plate 100 is pasted on and the wedge shape LGP 2 default opposing planes of the gradient by double faced adhesive tape, also fits with reflector plate 3; The front of framework 2 sills is fixed at the back side of the FPC in the luminescence component 8 by double faced adhesive tape 9, correspondingly, be welded in light emitting diode on the FPC be contained in the groove 21 in this sill front respectively and the light-emitting area of light emitting diode towards the incidence surface of wedge shape LGP; Described down diffusion barrier 4, down brightness enhancement film 5, go up brightness enhancement film 6, black and white shading rubber belt 7 successively in the front of framework 2 is embedded in framework 2, described diffusion barrier 4 is down also fitted with the exiting surface of wedge shape LGP 1.
When described module backlight is worked, light sends through the incidence surface of wedge shape LGP 1 from light emitting diode and injects, through the site face break up with reflector plate 3 reflection after, penetrate in wedge shape LGP 1 from exiting surface, light is handled the back ejaculation through which floor stacked blooming piece then, for display panels provides light source.
In the back light module unit structure that the utility model provides, described two-sided white reflector plate is located at the back side of the default gradient of wedge shape LGP, paste with the wedge shape LGP then and be fixed on the framework, thereby bed hedgehopping the thickness of wedge shape LGP incidence surface, light is penetrated from the gap of LGP and light emitting diode difference in height to be gone, both solved hot spot, problems such as skew ray bundle, it is very bright to have solved LGP socket front end integral body again, display effect is relatively poor, uneven problem, simultaneously the incident ray of light emitting diode is fully utilized, the overall brightness of back light module unit structure has very big lifting.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a back light module unit structure comprises framework, wedge shape LGP and luminescence component, wherein,
Described framework is the framework of a hollow, and the front of described framework sill is provided with groove;
Described wedge shape LGP has an incidence surface and an exiting surface, and an end of wedge shape LGP incidence surface is the tapered end with the default gradient and length, and described wedge shape LGP is embedded in the described framework;
Described luminescence component includes FPC, the one side that described FPC is provided with light emitting diode is fixed in the front of described framework sill, and described light emitting diode is contained in the groove in described front, and the light-emitting area of described light emitting diode is towards the incidence surface of described wedge shape LGP;
It is characterized in that also comprise the two-sided white reflector plate that is arranged at the default gradient phase back side of wedge shape LGP, described two-sided white reflector plate is concordant with the incidence surface of wedge shape LGP.
2. back light module unit structure according to claim 1 is characterized in that, described two-sided white reflector plate is preset the opposing plane of the gradient by double faced adhesive tape and wedge shape LGP and pasted fixing.
3. back light module unit structure according to claim 2 is characterized in that, described double faced adhesive tape is located at the two ends and the wedge shape LGP of two-sided white reflector plate and is fixed.
4. back light module unit structure according to claim 3 is characterized in that, the centre of described two-sided white reflector plate also is provided with double faced adhesive tape and the wedge shape LGP is fixed.
5. according to each described back light module unit structure in the claim 1 to 4, it is characterized in that the thickness of described two-sided white reflector plate is 0.05-0.1mm.
6. according to each described back light module unit structure in the claim 1 to 4, it is characterized in that the thickness difference of the tapered end of described wedge shape LGP and the tail end relative with tapered end is 0.08-0.12mm.
7. back light module unit structure according to claim 1 is characterized in that, the exiting surface sequential cascade of described wedge shape LGP has some blooming pieces and black and white shading rubber belt, and a side relative with exiting surface is provided with reflector plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020169533XU CN201779541U (en) | 2010-04-14 | 2010-04-14 | Back light module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020169533XU CN201779541U (en) | 2010-04-14 | 2010-04-14 | Back light module structure |
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|---|---|
| CN201779541U true CN201779541U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020169533XU Expired - Fee Related CN201779541U (en) | 2010-04-14 | 2010-04-14 | Back light module structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352984A (en) * | 2011-05-26 | 2012-02-15 | 友达光电股份有限公司 | Backlight module |
| CN102620218A (en) * | 2012-04-18 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102818188A (en) * | 2012-05-08 | 2012-12-12 | 友达光电股份有限公司 | Backlight module |
| CN102900995A (en) * | 2011-07-28 | 2013-01-30 | 冠捷投资有限公司 | Backlight module |
| CN103032819A (en) * | 2011-10-10 | 2013-04-10 | 苏州佳值电子工业有限公司 | Ultra-thin fully-reflective Mylar sheet for keyboard |
| CN103869407A (en) * | 2014-03-07 | 2014-06-18 | 合肥铨励光电科技有限公司 | Cold/hot rolling thin film type highlighting light guide plate and roll-to-roll preparation method thereof |
| CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
| WO2016086475A1 (en) * | 2014-12-02 | 2016-06-09 | 深圳市华星光电技术有限公司 | Liquid crystal display module and manufacturing method thereof |
| CN106439704A (en) * | 2016-11-30 | 2017-02-22 | 南京妙策传媒有限公司 | Suspension type transparent indicator lamp |
| CN109581578A (en) * | 2019-01-15 | 2019-04-05 | 惠州市华星光电技术有限公司 | A kind of backlight module and liquid crystal display device |
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2010
- 2010-04-14 CN CN201020169533XU patent/CN201779541U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352984A (en) * | 2011-05-26 | 2012-02-15 | 友达光电股份有限公司 | Backlight module |
| CN102900995A (en) * | 2011-07-28 | 2013-01-30 | 冠捷投资有限公司 | Backlight module |
| CN103032819A (en) * | 2011-10-10 | 2013-04-10 | 苏州佳值电子工业有限公司 | Ultra-thin fully-reflective Mylar sheet for keyboard |
| CN102620218A (en) * | 2012-04-18 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN102818188B (en) * | 2012-05-08 | 2015-02-25 | 友达光电股份有限公司 | Backlight module |
| CN102818188A (en) * | 2012-05-08 | 2012-12-12 | 友达光电股份有限公司 | Backlight module |
| CN103869407A (en) * | 2014-03-07 | 2014-06-18 | 合肥铨励光电科技有限公司 | Cold/hot rolling thin film type highlighting light guide plate and roll-to-roll preparation method thereof |
| CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
| WO2016078124A1 (en) * | 2014-11-17 | 2016-05-26 | 深圳市华星光电技术有限公司 | Backlight module and display having same |
| WO2016086475A1 (en) * | 2014-12-02 | 2016-06-09 | 深圳市华星光电技术有限公司 | Liquid crystal display module and manufacturing method thereof |
| US10073213B2 (en) | 2014-12-02 | 2018-09-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display module and method for manufacturing the same |
| CN106439704A (en) * | 2016-11-30 | 2017-02-22 | 南京妙策传媒有限公司 | Suspension type transparent indicator lamp |
| CN109581578A (en) * | 2019-01-15 | 2019-04-05 | 惠州市华星光电技术有限公司 | A kind of backlight module and liquid crystal display device |
| CN109581578B (en) * | 2019-01-15 | 2020-09-01 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN BYD ELECTRONIC COMPONENT CO., LTD. Free format text: FORMER OWNER: BIYADI CO., LTD. Effective date: 20150902 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150902 Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen BYD Electronic Component Co., Ltd. Address before: 518118 Pingshan Road, Pingshan Town, Shenzhen, Guangdong, No. 3001, No. Patentee before: Biyadi Co., Ltd. |
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| 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: 20110330 Termination date: 20190414 |