CN102352979A - Backlight module - Google Patents
Backlight module Download PDFInfo
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- CN102352979A CN102352979A CN2011102140493A CN201110214049A CN102352979A CN 102352979 A CN102352979 A CN 102352979A CN 2011102140493 A CN2011102140493 A CN 2011102140493A CN 201110214049 A CN201110214049 A CN 201110214049A CN 102352979 A CN102352979 A CN 102352979A
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- light
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- lgp
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- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 230000004308 accommodation Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 8
- 239000002390 adhesive tape Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000010408 film Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The invention discloses a backlight module, which comprises a light guide plate, a light-emitting element and a frame. The light guide plate comprises a light incident surface, a light emergent surface and a fixing part, wherein the fixing part is positioned between the light incident surface and the light emergent surface; the light-emitting element is arranged at the light incident surface; the frame comprises a bending part which is provided with a convex structure, and the convex structure is abutted against the fixed part of the light guide plate. Therefore, the light guide plate can be fixed, and light leakage from the light incident surface can be blocked by the protruding structures before leaking to the light emergent surface.
Description
Technical field
The present invention relates to a kind of backlight module, particularly relate to a kind of backlight module that prevents light leak.
Background technology
LCD belongs to TaiWan, China and gives priority to one of industry, along with price constantly descends, replaces the conventional cathode ray tube display gradually in recent years and becomes the main flow of display on the market.And even no matter be notebook computer, mobile phone, personal computer screens domestic TV etc., LCD can be said and enter into fully among the human life.And because liquid crystal molecule itself can't emitting characteristics, so LCD is except liquid crystal panel, need be dependent on backlight module provides light source, can reach the effect of demonstration.
Early stage backlight module uses cold cathode fluorescent tube (CCFL) as illuminating source, and with light source be arranged at liquid crystal panel under, i.e. the backlight module of so-called straight-down negative.But because environmental consciousness comes back and the trend of electronic product slimming in recent years; The cold cathode fluorescent tube that contains mercury is replaced by light emitting diode (LED) gradually; Simultaneously in order to make the LCD slimming; The light source of backlight module also changes from the below and is arranged at side, will and form area source and the feed flow crystal panel is used from the turn light rays of side incident through LGP again, and this is the backlight module of so-called side-light type.
Yet the light-emitting component of side light type back light module must be made good assembling coupling with the incidence surface of LGP, otherwise causes light leakage phenomena easily, and then the light uniformity of display floater is descended.
Summary of the invention
In view of this, the present invention proposes a kind of backlight module, can effectively improve the light leak defective, and it comprises LGP, light-emitting component and frame etc.Wherein LGP comprises incidence surface, exiting surface and fixed part, and fixed position is between incidence surface and exiting surface; Light-emitting component is arranged at incidence surface; Frame then comprises the kink with projective structure, the fixed part of projective structure butt LGP.
Because the fixed position of LGP is between incidence surface and exiting surface; And the fixed part of the projective structure elasticity butt LGP of frame; Therefore fail to get into the incidence surface of LGP fully and when light leakage phenomena takes place when the light that light-emitting component sent; Projective structure can leak to exiting surface at light leak and stop, makes unlikely being affected of the light uniformity of exiting surface.
Description of drawings
Figure 1A is a frame sketch map of the present invention ().
Figure 1B is a frame sketch map of the present invention (two).
Fig. 2 A is a backlight module generalized section of the present invention ().
Fig. 2 B is a backlight module generalized section of the present invention (two).
Fig. 3 is a backlight module generalized section of the present invention (three).
Fig. 4 is a backlight module generalized section of the present invention (four).
[main description of reference numerals]
1,2,3.... backlight module
11 ... LGP
111...... incidence surface
112...... exiting surface
113...... fixed part
114...... the back side
12 ... light-emitting component
121...... light-emitting area
13 ... frame
131...... kink
132...... projective structure
133...... bottom
134...... side
135...... top
136...... extension
137...... spatial accommodation
139...... accommodation space
14 ... reflector layer
15 ... adhesion coating
16...... circuit board
17...... diffuser plate
18...... blooming
19...... housing
20...... light leak
The specific embodiment
Please, be respectively frame sketch map of the present invention (), frame sketch map (two), backlight module generalized section () and backlight module generalized section (two), disclose a kind of backlight module 1 and frame 13 thereof with reference to Figure 1A to Fig. 2 B.Backlight module 1 of the present invention comprises LGP 11, light-emitting component 12 and frame 13 etc.Wherein LGP 11 comprises incidence surface 111, exiting surface 112 and fixed part 113, and fixed part 113 is between incidence surface 111 and exiting surface 112; Preferably, fixed part of the present invention 113 is positioned at exiting surface 112 and is example on the same plane, and this kind design is in being incorporated into LGP 11 in the frame 13 easily, but is not limited thereto.In other embodiments, fixed part 113 is positioned on the Different Plane with exiting surface 112.Light-emitting component 12 is arranged at incidence surface 111.Generally speaking, light-emitting component can be divided into the combination of spot light (for example: the series connection of inorganic light-emitting diode, Organic Light Emitting Diode or other suitable diode or above-mentioned diode/parallel connection is made up) or fluorescence light source (for example: cathode fluorescent tube, thermal cathode fluorescent tube, planar light source, field emission light source or other suitable light source or above-mentioned combination) or above-mentioned light source.The embodiment of the invention is to implement example with the spot light, but is not limited thereto, and fluorescence light source also can be selected for use.13 on frame comprises kink 131, and kink 131 has projective structure 132, and fixed part 113 upper surfaces of projective structure 132 butt LGPs 11.That is to say that projective structure 132 is the bottom 133 inner surface directions protrusions toward frame 13.Projective structure 132 does not limit the shape of section basically; But projective structure 132 design can be distinguished following design and all can use: (1) projective structure have semicircle curvature, (2) projective structure have near semicircle curvature, (3) projective structure have curvature, (4) part projective structure 132 and have curvature, (5) projective structure 132 does not have curvature, and a plane is for example arranged.Wherein, (1), to can be described as arcuate structure be preferred embodiment of the present invention to the design of the projective structure of (2) and (3) and be the normal description of using of the present invention; But the projective structure of (1) and (2) is designed to most preferred embodiment, because of (1) and (2) design more not can scratch LGP 11 exiting surface 112.In detail; Frame 13 is to be made up of with 131 of kinks bottom 133, side 134, top 135, extension 136; And bottom 133, side 134 is connected to form light source spatial accommodation 137 with top 135, holding light-emitting component 12, and extension 136 connection tops 135 and kinks 131; And extension 136 towards the bottom 133 inner surface direction extend, then top 135, extension 136 and part kink 131 present step structure (observing from profile).
Backlight module 1 also comprises housing 19, and it is arranged at outside the frame 13, and housing 19 and kink 131 spacing of being separated by, to constitute accommodation space 139.Therefore, accommodation space 139 just can be used as the space that can supply kink 131 bending activities, and can make kink 131 elasticity bend, and lets projective structure 132 elasticity be connected to fixed part 113 upper surfaces of LGP 11.That is to say that the part inner surface of housing 19 can contact the top 135 part outer surfaces of frame 13, and does not contact kink 131, could constitute this accommodation space 139.
When personnel combine LGP 11 with frame 13, shown in Fig. 2 A, only contact to some extent between LGP 11 and the frame 13 at projective structure 132 places, therefore can effectively avoid LGP 11 by 13 scratches of frame.
According to above-mentioned frame design, in one embodiment, frame 13 coats three faces of light-emitting component 12 at least, and shown in Fig. 2 A, light-emitting component 12 is all coated by frame 13 except that light-emitting area 121.
For the light that lets light-emitting component 12 sent can all be used or be used once more; Therefore; In other embodiments; Optionally be provided with a reflector layer 14 at the inner surface of frame 13 bottoms 133 and 114 at the back side of LGP 11, and this reflector layer 14 can be arranged on the inner surface of (promptly with respect to exiting surface 112) on the back side 114 of LGP 11 or frame 13 bottoms 133.The embodiment of the invention is to be provided with reflector layer 14 with the back side 114, and simultaneously frame 13 more extends and the back side 14 that comprehensively coats LGP 11 is example, but is not limited thereto.Wherein, reflector layer 14 can be the single or multiple lift structure, and its material can comprise white material, reflecting material or other suitable material/design, all can use.
Because light-emitting component 12 luminous needs provide power supply, and this power supply is from circuit board, and then light-emitting component 12 comprises circuit board 16.Wherein, circuit board comprises flexible circuit board, printed circuit board (PCB) or above-mentioned combination.The present invention is to be the example explanation with the flexible circuit board, but is not limited thereto.And backlight module also comprises adhesion coating 15, and then circuit board 16 is fixed on bottom 133 inner surfaces of frame 13 through adhesion coating 15; Therefore, fixed part 113 back sides of LGP 11 promptly with respect to the upper surface of fixed part 133, can be connected to adhesion coating 15.Wherein, the material of adhesion coating 15 comprises sticker, adhesive tape or other suitable material or above-mentioned combination.The adhesion coating 15 of the embodiment of the invention is to be that example is explained with the adhesive tape, and then circuit board 16 is fixed on bottom 133 inner surfaces of frame 13 through the attaching of adhesion coating 15.
Please, be backlight module generalized section of the present invention (three), disclose a kind of backlight module 2 with reference to Fig. 3.In last embodiment; When adhesion coating 15 was example with the adhesive tape, the fixed part 113 of LGP 11 was connected on the adhesive tape, yet inhomogenous phenomenon takes place the thickness of adhesive tape easily; Therefore cross when thin when adhesive tape, the light-emitting area 121 of light-emitting component 12 just can be higher than incidence surface 111 and generation light leak 20.Yet because the kink 131 of present embodiment has projective structure 132; And the fixed part 113 of projective structure 132 elasticity butt LGPs 11; Therefore light leak 20 meetings are stopped by projective structure 132 and can't leak to exiting surface 112 that also therefore the light uniformity of exiting surface 11 is able to keep.
In addition, in the assembling process,, and then produce light leak 20 also easily because the assembling careless mistake causes the light-emitting area 121 of light-emitting component 12 to be higher than the incidence surface 111 of LGP 11.But through stopping of projective structure 132, even if produce light leak 20, it also can't leak the light uniformity that influences exiting surface 112 to the exiting surface 112 of LGP 11.
Please refer again to Fig. 3, the exiting surface 112 of LGP 11 is provided with diffuser plate 17, the light that is sent from exiting surface 112 in order to even diffusion; In addition, also be provided with blooming 18 on the diffuser plate 17.Wherein blooming 18 comprise brightness enhancement film (BEF), all the light film, imitate brightness enhancement film (DBEF), light polarizing film or other suitable blooming or above-mentioned combination by force.Moreover some special bloomings can have at least two kinds of optical functions simultaneously, then only can be called combined optical film, for example: have polarisation/brightness enhancement function, diffusion/brightness enhancement function, equal light/imitate by force brightness enhancement function, polarisation/diffusion/brightness enhancement functions or the like simultaneously.
In the above embodiments, be that example is explained all, but be not limited thereto with the light-emitting component 12 and the incidence surface 111 of LGP 11 spacing of not being separated by.Please, be backlight module generalized section of the present invention (four), disclose a kind of backlight module 3 with reference to Fig. 4.Wherein, the relevant design of backlight module 3 can check that all the described backlight module 1 of the foregoing description uses with backlight module 2.Difference is: the light-emitting component of backlight module 3 12 and the incidence surface 111 of LGP 11 spacing of being separated by even therefore light-emitting area 121 is not higher than incidence surface 111, also can produce light leak 20.Likewise, through stopping of projective structure 132, light leak 20 also can't leak to exiting surface 112.
Main purpose of the present invention is to solve various light leakage phenomena, makes its light uniformity that is unlikely to influence exiting surface, and then obtains good luminescent quality.
Though the present invention discloses with aforementioned preferred embodiment, so it is not that any those of ordinary skills are not breaking away from the spirit and scope of the present invention, when doing various changes and modification in order to qualification the present invention.Like above-mentioned explanation, can do all types of corrections and variation, and can not destroy the spirit of this invention.Therefore protection scope of the present invention is as the criterion when looking appended the scope that claim defined.
Claims (12)
1. backlight module comprises:
One LGP comprises an incidence surface, an exiting surface and a fixed part, and this fixed position is between this incidence surface and this exiting surface;
One light-emitting component is arranged at this incidence surface; And
One frame comprises a kink, and this kink has a projective structure, and the fixed part of this this LGP of projective structure butt.
2. backlight module as claimed in claim 1, wherein this frame coats at least three faces of this light-emitting component.
3. backlight module as claimed in claim 2, wherein this LGP also comprises the back side with respect to this exiting surface, and this back side is provided with a reflector layer.
4. backlight module as claimed in claim 3, wherein this frame more extends and coats comprehensively this back side of this LGP.
5. backlight module as claimed in claim 4 also comprises an adhesion coating, and this light-emitting component comprises a circuit board, and this flexible circuit board is fixed on this frame with this adhesion coating.
6. backlight module as claimed in claim 5, wherein this fixed part of this LGP is connected on this adhesion coating.
7. backlight module as claimed in claim 1 also comprises a diffuser plate, is arranged on this exiting surface.
8. backlight module as claimed in claim 1 also comprises a blooming, is arranged on this diffuser plate.
9. backlight module as claimed in claim 1 also comprises a housing, is arranged at outside this frame, and this housing and this kink spacing of being separated by, to constitute an accommodation space.
10. backlight module as claimed in claim 1, wherein this light-emitting component comprises a light-emitting area, and this light-emitting component is all coated by this frame except this light-emitting area.
11. backlight module as claimed in claim 1, wherein this light-emitting component comprises a light-emitting area, and the part of this light-emitting area is higher than the incidence surface of this LGP.
12. backlight module as claimed in claim 1, wherein this light-emitting component comprises a light-emitting area, and the incidence surface of this light-emitting area and this LGP spacing of being separated by.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099147013 | 2010-12-30 | ||
| TW99147013A TW201227084A (en) | 2010-12-30 | 2010-12-30 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102352979A true CN102352979A (en) | 2012-02-15 |
Family
ID=45576603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102140493A Pending CN102352979A (en) | 2010-12-30 | 2011-07-22 | Backlight module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102352979A (en) |
| TW (1) | TW201227084A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383085A (en) * | 2012-05-04 | 2013-11-06 | 苏州璨宇光学有限公司 | Backlight module and display device |
| CN103645583A (en) * | 2013-08-13 | 2014-03-19 | 友达光电股份有限公司 | Backlight module |
| WO2014040303A1 (en) * | 2012-09-12 | 2014-03-20 | 深圳市华星光电技术有限公司 | Backlight unit and liquid crystal display device |
| WO2014190663A1 (en) * | 2013-05-30 | 2014-12-04 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| WO2016078126A1 (en) * | 2014-11-17 | 2016-05-26 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN105807487A (en) * | 2016-04-06 | 2016-07-27 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN105972514A (en) * | 2016-06-21 | 2016-09-28 | 深圳天珑无线科技有限公司 | Mobile terminal, backlight module of mobile terminal and complete machine drop test method of mobile terminal |
| CN105974665A (en) * | 2016-06-17 | 2016-09-28 | 开思茂电子科技(苏州)有限公司 | Backlight |
| CN106439567A (en) * | 2016-08-30 | 2017-02-22 | 中山市美耐特光电有限公司 | Light strip type LED flexible lamp strip |
| WO2020215935A1 (en) * | 2019-04-25 | 2020-10-29 | Oppo广东移动通信有限公司 | Mobile terminal |
| CN113625387A (en) * | 2021-08-20 | 2021-11-09 | 业成科技（成都）有限公司 | Backlight module |
| CN114660699A (en) * | 2022-03-25 | 2022-06-24 | 江苏毅昌科技有限公司 | Assembly structure of ELED side-entry module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI506338B (en) * | 2011-12-15 | 2015-11-01 | Au Optronics Corp | Display device and elastic frame |
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| CN101858514A (en) * | 2010-05-12 | 2010-10-13 | 友达光电股份有限公司 | Light source fixing frame, light source module, backlight module and liquid crystal display |
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2010
- 2010-12-30 TW TW99147013A patent/TW201227084A/en unknown
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2011
- 2011-07-22 CN CN2011102140493A patent/CN102352979A/en active Pending
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| CN1396485A (en) * | 2001-07-06 | 2003-02-12 | 阿尔卑斯电气株式会社 | Surface luminous device and liquid crystal display |
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| CN101858514A (en) * | 2010-05-12 | 2010-10-13 | 友达光电股份有限公司 | Light source fixing frame, light source module, backlight module and liquid crystal display |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383085A (en) * | 2012-05-04 | 2013-11-06 | 苏州璨宇光学有限公司 | Backlight module and display device |
| WO2014040303A1 (en) * | 2012-09-12 | 2014-03-20 | 深圳市华星光电技术有限公司 | Backlight unit and liquid crystal display device |
| US9983350B2 (en) | 2013-05-30 | 2018-05-29 | Boe Technology Group Co., Ltd. | Backlight module and liquid crystal display device |
| WO2014190663A1 (en) * | 2013-05-30 | 2014-12-04 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| CN104214590A (en) * | 2013-05-30 | 2014-12-17 | 北京京东方光电科技有限公司 | Backlight module and liquid crystal display device |
| CN103645583A (en) * | 2013-08-13 | 2014-03-19 | 友达光电股份有限公司 | Backlight module |
| CN103645583B (en) * | 2013-08-13 | 2016-04-06 | 友达光电股份有限公司 | Backlight module |
| WO2016078126A1 (en) * | 2014-11-17 | 2016-05-26 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN105807487A (en) * | 2016-04-06 | 2016-07-27 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN105974665A (en) * | 2016-06-17 | 2016-09-28 | 开思茂电子科技(苏州)有限公司 | Backlight |
| CN105972514A (en) * | 2016-06-21 | 2016-09-28 | 深圳天珑无线科技有限公司 | Mobile terminal, backlight module of mobile terminal and complete machine drop test method of mobile terminal |
| CN106439567A (en) * | 2016-08-30 | 2017-02-22 | 中山市美耐特光电有限公司 | Light strip type LED flexible lamp strip |
| WO2020215935A1 (en) * | 2019-04-25 | 2020-10-29 | Oppo广东移动通信有限公司 | Mobile terminal |
| US11750728B2 (en) | 2019-04-25 | 2023-09-05 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Mobile terminal and electronic device |
| CN113625387A (en) * | 2021-08-20 | 2021-11-09 | 业成科技（成都）有限公司 | Backlight module |
| CN113625387B (en) * | 2021-08-20 | 2023-06-02 | 业成科技（成都）有限公司 | Backlight module |
| CN114660699A (en) * | 2022-03-25 | 2022-06-24 | 江苏毅昌科技有限公司 | Assembly structure of ELED side-entry module |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201227084A (en) | 2012-07-01 |
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Application publication date: 20120215 |