CN203757522U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN203757522U CN203757522U CN201420151622.XU CN201420151622U CN203757522U CN 203757522 U CN203757522 U CN 203757522U CN 201420151622 U CN201420151622 U CN 201420151622U CN 203757522 U CN203757522 U CN 203757522U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- diffusion sheet
- backlight module
- lgp
- prismatic lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 64
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims description 17
- 238000005516 engineering process Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012536 packaging technology Methods 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
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- Planar Illumination Modules (AREA)
Abstract
The utility model relates to the display technical field and particularly relates to a backlight module and a display device to solve the problem of light leakage of backlight modules. The backlight module comprises a back plate, a rubber frame and a light guide plate which are arranged in the back plate, a diffusion sheet arranged on the light guide plate and at least one light bar arranged between the light guide plate and the rubber frame. The light bars are disposed on the periphery of the diffusion sheet, and each light bar comprises a circuit board in lap joint onto the light guide plate and the rubber frame respectively. The sides of the diffusion sheet, which are opposite to the circuit boards, are in lap joint with the respective corresponding circuit boards; projections of the sides of the diffusion sheet on the light guide plate, which are in lap joint with the circuit boards, coincide with projections of the lap joint areas of the circuit boards and the diffusion sheet on the light guide plate. The utility model further discloses a display device comprising the backlight module.
Description
Technical field
The utility model relates to Display Technique field, particularly a kind of backlight module and display unit.
Background technology
Backlight module is requisite device in liquid crystal indicator, is used to liquid crystal panel that light source is provided.As shown in Figure 1, be the structural representation of a kind of backlight module in prior art; This backlight module comprises: backboard 10, be arranged at glue frame 20 and end reflector plate 30 in backboard 10, be arranged at the LGP 40 on end reflector plate 30, be arranged at the lamp bar 50 between LGP 40 and glue frame 20, be arranged at the diffusion sheet 60 on the upper surface of LGP 40, be arranged at the first prismatic lens 70 on the upper surface of diffusion sheet 60, be arranged at the second prismatic lens 80 on the upper surface of the first prismatic lens 70, and be attached to the shading rubber belt 90 on lamp bar 50, and the two ends of shading rubber belt 90 are attached to respectively on the second prismatic lens 80 and glue frame 20; Wherein, lamp bar 50 comprises: the circuit board 51 that two ends are connected with LGP 40 and glue frame respectively, be arranged at the multiple light sources 52 on circuit board 51, the light that each light source 52 sends penetrates through LGP 40, diffusion sheet 60, the first prismatic lens 70 and the second prismatic lens upper surface from the second prismatic lens 80 after 80s, forming surface light.
Because the optical film materials such as diffusion sheet 60, the first prismatic lens 70 and the second prismatic lens 80 all can have certain expansion under the higher condition of temperature, for fear of because offseting and cause diffusion sheet 60, the first prismatic lens 70 and the second prismatic lens 80 to occur fold phenomenon with circuit board 51 after expanding, between diffusion sheet 60 and circuit board 51, between the first prismatic lens 70 and circuit board 51 and all can leave certain gap between the second prismatic lens 80 and circuit board 51; But the existence in above-mentioned gap, causes having part light to penetrate from this gap, makes backlight module occur light leak problem.
Utility model content
The purpose of this utility model is to provide a kind of backlight module and display unit, for solving the problem of backlight module light leak.
To achieve these goals, the utility model provides following technical scheme:
A kind of backlight module, comprise: backboard, be arranged at glue frame and LGP in described backboard, be arranged at the diffusion sheet on described LGP, at least one lamp bar between described LGP and described glue frame, and each described lamp bar is positioned at the surrounding of described diffusion sheet, each described lamp bar comprises the circuit board being overlapped on respectively on described LGP and described glue frame, wherein, the described diffusion sheet respectively side relative with each described circuit board is overlapped on respectively on each self-corresponding circuit board, and the described diffusion sheet projection on described LGP with the side of each described circuit board overlap joint respectively, projection on described LGP overlaps with the overlap joint region of described diffusion sheet respectively with each described circuit board.
Preferably, each described circuit board has respectively step surface towards pointing to a lateral edges of described diffusion sheet, and the described diffusion sheet respectively side relative with each described circuit board is overlapped on respectively on the step surface of each self-corresponding circuit board.
Preferably, described circuit board is flexible PCB.
Preferably, above-mentioned lamp bar also comprises: be arranged at the multiple light emitting diodes on described circuit board.
Further, above-mentioned backlight module also comprises: be arranged at the end reflector plate between described LGP and described backboard, be arranged at the first prismatic lens on described diffusion sheet, be arranged at the second prismatic lens on described the first prismatic lens, and be attached to the shading rubber belt on described circuit board, and the both sides of the edge of described shading rubber belt are connected with described the second prismatic lens and described glue frame respectively.
The utility model also provides a kind of display unit simultaneously, comprises any backlight module that technique scheme is carried.
In the backlight module providing at the utility model, the diffusion sheet respectively side relative with each circuit board is overlapped on respectively on each self-corresponding circuit board, and the diffusion sheet projection on LGP with the side of each circuit board overlap joint respectively, the projection on described LGP overlaps with the overlap joint region of diffusion sheet respectively with each circuit board; So design, can stop light from diffusion sheet and and each circuit board between gap penetrate, and diffusion sheet can not offset with circuit board and cause diffusion sheet to occur fold after expansion, thereby can effectively solve backlight module light leak problem.
Brief description of the drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a part of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of backlight module in prior art;
The structural representation of the backlight module that Fig. 2 provides for the utility model embodiment;
Fig. 3 a is the front view of circuit board in Fig. 2;
Fig. 3 b is the side view of circuit board in Fig. 2.
Reference numeral:
10-backboard, 20-glue frame,
Reflector plate at the bottom of 30-, 40-LGP,
50-lamp bar, 51-circuit board,
52-light source, 60-diffusion sheet,
70-the first prismatic lens, 80-the second prismatic lens,
90-shading rubber belt.
Detailed description of the invention
For solving the light leak problem of existing backlight module, the utility model provides a kind of improved technical scheme, the circuit board of the diffusion sheet in backlight module and lamp bar is overlapped, to stop that light penetrates from the gap between diffusion sheet and circuit board, thereby can effectively solve backlight module light leak problem.
In order to make those skilled in the art better understand the technical solution of the utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technical solution of the utility model is clearly and completely described.
Refer to Fig. 2, the structural representation of the backlight module providing for the utility model embodiment, this backlight module comprises: backboard 10, be arranged at glue frame 20 and LGP 40 in backboard 10, be arranged at the diffusion sheet 60 on LGP 40, at least one lamp bar 50 between LGP 40 and glue frame 20, and each lamp bar 50 is positioned at the surrounding of diffusion sheet 60, each lamp bar 50 comprises the circuit board 51 that is overlapped on respectively LGP 40 and glue frame 20, the diffusion sheet 60 respectively edge relative with each circuit board 51 is overlapped on respectively on each self-corresponding circuit board 51, and the projection of the side that diffusion sheet 60 overlaps with each circuit board 51 respectively on LGP 40, projection on LGP 40 overlaps with the overlap joint region of diffusion sheet 60 respectively with each circuit board 51.
In above-mentioned backlight module, by diffusion sheet 60 respectively the side relative with each circuit board 51 be overlapped on respectively on each self-corresponding circuit board 51, after expanding, diffusion sheet 60 can not cause diffusion sheet 60 to occur under the prerequisite of fold phenomenon, stop light from diffusion sheet 60 and and each circuit board 51 between gap penetrate, thereby effectively solve backlight module light leak problem.
When concrete enforcement, in above-mentioned backlight module, can by diffusion sheet 60 respectively the side relative with each circuit board 51 be overlapped on respectively on each self-corresponding circuit board 51, one lateral edges that also each circuit board 51 can be pointed to diffusion sheet 60 is overlapped on expanding sheet 60, specifically can determine according to the packaging technology of backlight module, because the general lamp bar 50 of existing backlight module packaging technology is arranged in backboard 10, therefore prior to diffusion sheet 60, preferably, diffusion sheet 60 is overlapped on each circuit board 51.
Refer to Fig. 3 a and Fig. 3 b, wherein, Fig. 3 a is the front view of circuit board in Fig. 2; Fig. 3 b is the side view of circuit board in Fig. 2.In a kind of preferred embodiment, there is respectively step surface at each circuit board 51 towards pointing to a lateral edges of diffusion sheet 60, the diffusion sheet 60 respectively side relative with each circuit board 51 is overlapped on respectively on the step surface of each self-corresponding circuit board 51, particularly, point to and on diffusion sheet 60 1 lateral edges, offer the L shaped bit architecture of keeping away at each circuit board 51, the side that points to circuit board 51 at diffusion sheet 60 has with L shaped keeps away the flanging that bit architecture matches, keep away on bit architecture the flanging of diffusion sheet 60 being overlapped on to the L shaped of circuit board 51, can stop light from diffusion sheet 60 and and each circuit board 51 between gap penetrate, simultaneously, diffusion sheet 60 can not offset with circuit board 51 and cause diffusion sheet 60 to occur fold after expansion, so design, both can effectively solve backlight module light leak problem, can also avoid increasing the thickness of backlight module.
In the above-described embodiments, the circuit board 51 of lamp bar 50 can be hard circuit board, as aluminum base circuit board or bakelite circuit board etc., also it can be flexible PCB (Flexible Printed Circuit is called for short FPC), for the ease of installing, preferably, circuit board 51 is flexible PCB.
Above-mentioned lamp bar 50 is except comprising foregoing circuit plate 51, also comprise the multiple light sources 52 that are arranged on circuit board 51; Particularly, light source 52 can be cathode fluorescent tube (Cold Cathode FluorescentLamp, be called for short CCFL) or light emitting diode (Light Emitting Diode, be called for short LED), because of advantages such as LED have that brightness is high, the life-span is long and low in energy consumption, therefore, preferably, the multiple light sources that are arranged on circuit board 51 are respectively light emitting diode.
Continue to consult Fig. 2, above-mentioned backlight module also comprises: be arranged at the end reflector plate 30 between LGP 40 and backboard 10, be arranged at the first prismatic lens 70 on diffusion sheet 60, be arranged at the second prismatic lens 80 on the first prismatic lens 70, and be attached to the shading rubber belt 90 on circuit board 51, and the both sides of the edge of shading rubber belt 90 are connected with the second prismatic lens 80 and glue frame 20 respectively; So design, the light utilization efficiency sending further to improve lamp bar 50, reduces the appearance of light leak problem, and then improves the picture quality of backlight module.
The utility model embodiment also provides a kind of display unit simultaneously, comprises the backlight module that technique scheme is carried.Because the backlight module that adopts said structure can solve light leak problem effectively, therefore, adopt compared with the display unit of above-mentioned backlight module and the display unit of the backlight module that adopts background technology to carry, obviously improve the display quality of display unit.
It should be noted that, above-mentioned display unit can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.
In sum, in the backlight module providing at the utility model, the diffusion sheet respectively side relative with each circuit board is overlapped on respectively on each self-corresponding circuit board, and the diffusion sheet projection on LGP with the side of each circuit board overlap joint respectively, the projection on described LGP overlaps with the overlap joint region of diffusion sheet respectively with each circuit board; So design, can stop light from diffusion sheet and and each circuit board between gap penetrate, and diffusion sheet can not offset with circuit board and cause diffusion sheet to occur fold after expansion, thereby can effectively solve backlight module light leak problem.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (6)
1. a backlight module, comprise: backboard, be arranged at glue frame and LGP in described backboard, be arranged at the diffusion sheet on described LGP, at least one lamp bar between described LGP and described glue frame, and each described lamp bar is positioned at the surrounding of described diffusion sheet, each described lamp bar comprises the circuit board being overlapped on respectively on described LGP and described glue frame, it is characterized in that, the described diffusion sheet respectively side relative with each described circuit board is overlapped on respectively on each self-corresponding circuit board, and the described diffusion sheet projection on described LGP with the side of each described circuit board overlap joint respectively, projection on described LGP overlaps with the overlap joint region of described diffusion sheet respectively with each described circuit board.
2. backlight module as claimed in claim 1, it is characterized in that, each described circuit board has respectively step surface towards pointing to a lateral edges of described diffusion sheet, and the described diffusion sheet respectively side relative with each described circuit board is overlapped on respectively on the step surface of each self-corresponding circuit board.
3. backlight module as claimed in claim 1, is characterized in that, described circuit board is flexible PCB.
4. backlight module as claimed in claim 1, is characterized in that, described lamp bar also comprises: be arranged at the multiple light emitting diodes on described circuit board.
5. the backlight module as described in as arbitrary in claim 1-4, it is characterized in that, also comprise: be arranged at the end reflector plate between described LGP and described backboard, be arranged at the first prismatic lens on described diffusion sheet, be arranged at the second prismatic lens on described the first prismatic lens, and be attached to the shading rubber belt on described circuit board, and the both sides of the edge of described shading rubber belt are connected with described the second prismatic lens and described glue frame respectively.
6. a display unit, is characterized in that, comprises the backlight module as described in as arbitrary in claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151622.XU CN203757522U (en) | 2014-03-31 | 2014-03-31 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151622.XU CN203757522U (en) | 2014-03-31 | 2014-03-31 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203757522U true CN203757522U (en) | 2014-08-06 |
Family
ID=51252790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420151622.XU Expired - Fee Related CN203757522U (en) | 2014-03-31 | 2014-03-31 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203757522U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456302A (en) * | 2014-11-17 | 2015-03-25 | 深圳市华星光电技术有限公司 | Backlight module and display |
| CN104482423A (en) * | 2014-11-17 | 2015-04-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN104566023A (en) * | 2014-12-24 | 2015-04-29 | 深圳市华星光电技术有限公司 | Backlight module and display |
| CN105511163A (en) * | 2016-01-28 | 2016-04-20 | 武汉华星光电技术有限公司 | Backlight module and display screen |
| CN105508936A (en) * | 2016-01-26 | 2016-04-20 | 武汉华星光电技术有限公司 | Backlight module and display device |
| WO2016123915A1 (en) * | 2015-02-03 | 2016-08-11 | 京东方科技集团股份有限公司 | Display device |
| WO2017063381A1 (en) * | 2015-10-12 | 2017-04-20 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, and display device |
| CN108458280A (en) * | 2018-02-23 | 2018-08-28 | 重庆京东方光电科技有限公司 | Backlight assembly and its assemble method, display device |
| CN108540603A (en) * | 2018-04-20 | 2018-09-14 | 深圳市隆利科技股份有限公司 | A kind of screen light leakage mobile phone comprehensively |
| CN110873923A (en) * | 2019-11-29 | 2020-03-10 | 维沃移动通信有限公司 | Light guide plate, backlight source, electronic equipment, light guide plate hole number identification method and device |
-
2014
- 2014-03-31 CN CN201420151622.XU patent/CN203757522U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482423A (en) * | 2014-11-17 | 2015-04-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN104456302A (en) * | 2014-11-17 | 2015-03-25 | 深圳市华星光电技术有限公司 | Backlight module and display |
| CN104456302B (en) * | 2014-11-17 | 2017-03-08 | 深圳市华星光电技术有限公司 | Backlight module and display |
| CN104566023A (en) * | 2014-12-24 | 2015-04-29 | 深圳市华星光电技术有限公司 | Backlight module and display |
| US9971186B2 (en) | 2015-02-03 | 2018-05-15 | Boe Technology Group Co., Ltd. | Display device |
| WO2016123915A1 (en) * | 2015-02-03 | 2016-08-11 | 京东方科技集团股份有限公司 | Display device |
| US10132982B2 (en) | 2015-10-12 | 2018-11-20 | Boe Technology Group Co., Ltd. | Light guide plate, backlight module and display apparatus |
| WO2017063381A1 (en) * | 2015-10-12 | 2017-04-20 | 京东方科技集团股份有限公司 | Light guide plate, backlight module, and display device |
| US10012786B2 (en) | 2016-01-26 | 2018-07-03 | Wuhan China Star Optoelectronics Technology Co., Ltd | Backlight modules and display devices |
| CN105508936A (en) * | 2016-01-26 | 2016-04-20 | 武汉华星光电技术有限公司 | Backlight module and display device |
| US10082620B2 (en) | 2016-01-28 | 2018-09-25 | Wuhan China Star Optoelectronics Technology Co., Ltd | Backlight module and display screen |
| CN105511163A (en) * | 2016-01-28 | 2016-04-20 | 武汉华星光电技术有限公司 | Backlight module and display screen |
| CN108458280A (en) * | 2018-02-23 | 2018-08-28 | 重庆京东方光电科技有限公司 | Backlight assembly and its assemble method, display device |
| CN108540603A (en) * | 2018-04-20 | 2018-09-14 | 深圳市隆利科技股份有限公司 | A kind of screen light leakage mobile phone comprehensively |
| CN110873923A (en) * | 2019-11-29 | 2020-03-10 | 维沃移动通信有限公司 | Light guide plate, backlight source, electronic equipment, light guide plate hole number identification method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |
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| CF01 | Termination of patent right due to non-payment of annual fee |