CN201203734Y - Liquid crystal display and backlight module thereof - Google Patents
Liquid crystal display and backlight module thereof Download PDFInfo
- Publication number
- CN201203734Y CN201203734Y CNU2007201939351U CN200720193935U CN201203734Y CN 201203734 Y CN201203734 Y CN 201203734Y CN U2007201939351 U CNU2007201939351 U CN U2007201939351U CN 200720193935 U CN200720193935 U CN 200720193935U CN 201203734 Y CN201203734 Y CN 201203734Y
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- Prior art keywords
- circuit board
- guide plate
- light guide
- light
- engaging portion
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 16
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000012788 optical film Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000003287 optical effect Effects 0.000 description 6
- 238000005282 brightening Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007769 metal material Substances 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
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model relates to a liquid crystal display device and backlight unit thereof. The backlight module comprises a light guide plate, a frame, a circuit board and a plurality of light emitting diode chips. The light guide plate is provided with a light incident surface. In addition, the frame is arranged beside the light guide plate and is provided with at least one first clamping part. In addition, the circuit board is provided with at least one second clamping part, and the frame and the circuit board are suitable for being jointed by the first clamping part and the second clamping part. The light emitting diode chip is arranged on the circuit board and is positioned between the frame and the light incident surface of the light guide plate. Because the first clamping part is jointed with the second clamping part, the light emitted by the light emitting diode chip on the circuit board can be reflected to the light guide plate by the frame without a lampshade, thereby effectively reducing the manufacturing cost and having the advantage of easy assembly.
Description
Technical field
The utility model relates to a kind of LCD and module backlight thereof, and the LCD and the module backlight thereof that particularly close relevant for a kind of glue frame and the direct tenon of circuit board.
Background technology
In general LCD, because display panels (Liquid crystal display panel) does not have the function of active illuminating, so below display panels, must dispose a module backlight so that an area source to be provided, so that display panels can reach the purpose of demonstration.
Fig. 1 is the diagrammatic cross-section of existing module backlight.Please refer to Fig. 1, (lightguide plate, LGP) 130, one reflector plate 140 and a lampshade 150 constitute existing module 100 backlight by a plurality of light emitting diodes 110 (Fig. 1 only illustrates), a circuit board 120, a light guide plate at least.Wherein, light emitting diode 110 is disposed on the circuit board 120, and light emitting diode 110 is positioned at by the incidence surface 130a of light guide plate 130.Generally speaking, light emitting diode 110 comprises a light-emitting diode chip for backlight unit 112 and an encapsulating structure 114.This encapsulating structure 114 covers light-emitting diode chip for backlight unit 112.In addition, reflector plate 140 is disposed at light guide plate 130 belows, and lampshade 150 can be fixing with light guide plate 130 with circuit board 120.
Particularly, the part light L that light emitting diode 110 is launched can see through the reflection of lampshade 150, and is entered in the light guide plate 130 by incidence surface 130a.On the practice, the material of lampshade 150 is generally metal material, manufacturing cost height not only, and weight is heavier.It should be noted that when large-sized module backlight 100 need be assembled or do over again (rework) that lampshade 150 can make the time lengthening of whole assembling or dismounting, and then overall throughput (Throughput) is impacted.
The utility model content
A problem to be solved in the utility model is providing a kind of module backlight exactly, and it has assembling advantage easy and with low cost.
Another problem to be solved in the utility model provides a kind of LCD, and it has advantage with low cost.
The utility model proposes a kind of module backlight, it comprises a light guide plate, a framework, a circuit board and a plurality of light-emitting diode chip for backlight unit.Wherein, light guide plate has an incidence surface.In addition, chassis configuration is by light guide plate, and framework has at least one first holding section.In addition, circuit board has at least one second holding section, and framework is suitable for engaging with second holding section by first holding section with circuit board.Above-mentioned light-emitting diode chip for backlight unit is disposed on the circuit board, and between the incidence surface of framework and light guide plate.
In module backlight of the present utility model, above-mentioned module backlight also comprises a reflector plate, and it is disposed on the circuit board.
In module backlight of the present utility model, above-mentioned reflector plate extends to the light guide plate below.
In module backlight of the present utility model, above-mentioned circuit board has a reflecting surface, and light-emitting diode chip for backlight unit is disposed on the reflecting surface.
In module backlight of the present utility model, above-mentioned framework comprises the glue frame.
In module backlight of the present utility model, the first above-mentioned holding section is a trip.
In module backlight of the present utility model, the second above-mentioned holding section is a connecting hole.
In module backlight of the present utility model, the first above-mentioned holding section is a connecting hole.
In module backlight of the present utility model, the second above-mentioned holding section is a trip.
In module backlight of the present utility model, above-mentioned module backlight also comprises an optical diaphragm group, and it is disposed at the light guide plate top.
In module backlight of the present utility model, above-mentioned optical diaphragm group comprise diffusion sheet (Diffuserfilm), brightening piece (Brightness enhanced film, BEF) with prismatic lens (Prism sheet) at least one of them.
The utility model proposes a kind of LCD, it comprises an above-mentioned module backlight and a display panels.Wherein, display panels is disposed at the light guide plate top.
Module backlight of the present utility model engages framework by first holding section with circuit board with second holding section, and the light that light-emitting diode chip for backlight unit sent on the circuit board can be reflexed in the light guide plate by framework, does not need lampshade.Because module backlight of the present utility model need not lampshade, thereby can effectively reduce manufacturing cost and have assembling and be easy to advantage.Liquid crystal display applications of the present utility model module backlight of the present utility model, thereby can effectively reduce manufacturing cost.
Description of drawings
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, wherein:
Fig. 1 is the diagrammatic cross-section of existing module backlight.
Fig. 2 A is the LCD schematic perspective view of an embodiment of the present utility model.
Fig. 2 B is the module partial schematic diagram backlight of an embodiment of the present utility model.
Fig. 2 C is the module partial cutaway schematic backlight of an embodiment of the present utility model.
Fig. 3 is another module partial cutaway schematic backlight of an embodiment of the present utility model.
The main element symbol description:
100,300: module backlight
110: light emitting diode
112,340: light-emitting diode chip for backlight unit
114: encapsulating structure
120,330: circuit board
130,310: light guide plate
130a, 310a: incidence surface
140,312,334: reflector plate
150: lampshade
200: LCD
310b: exiting surface
320: framework
322: the first holding sections
332: the second holding sections
336: flexible circuit board
350: optical diaphragm group
400: display panels
402: thin-film transistor array base-plate
404: colored filter
L, L ': light
Embodiment
Fig. 2 A is the LCD schematic perspective view of an embodiment of the present utility model.Please refer to Fig. 2 A, LCD of the present utility model (liquid crystal display) 200 comprises a module 300 backlight and a display panels 400.Wherein, display panels 400 is disposed at the top of module 300 backlight.Module 300 backlight can provide display panels 400 display frames required light source.Generally speaking, display panels 400 mainly comprises a thin-film transistor array base-plate (thin film transistor array substrate) 402, one colored filter 404 and is sandwiched between the two liquid crystal layer (not illustrating).
Fig. 2 B is the module sectional perspective synoptic diagram backlight of an embodiment of the present utility model, and Fig. 2 C is the module partial cutaway schematic backlight of an embodiment of the present utility model.Please also refer to Fig. 2 B and Fig. 2 C, module backlight 300 of the present utility model comprises a light guide plate (light guide plate, LGP) 310, one framework (frame) 320, a circuit board 330 and a plurality of light-emitting diode chip for backlight unit (light-emitting diode chip) 340.Wherein, light guide plate 310 comprises an incidence surface 310a and an exiting surface 310b at least.Certainly, have in the affiliated technical field and know that usually the knowledgeable should know that light guide plate 310 can select plate light guide plate, wedge type light guide plate or the light guide plate of other type for use, only for illustrating, does not painstakingly limit to the kind of light guide plate 310 at this.
In addition, it is other that framework 320 is disposed at light guide plate 310, and framework 320 has at least one first holding section 322 (it is two that Fig. 2 B illustrates).On the practice, this framework 320 for example is glue frame (resin frame), and first holding section 322 can be a trip.Specifically, the material of framework 320 can adopt high reflecting material to make.On the other hand, circuit board 330 has at least one second holding section 332.Here be noted that then second holding section 332 is a connecting hole when first holding section 322 is trip.So, framework 320 can engage with second holding section 332 by first holding section 322 mutually with circuit board 330.In one embodiment, first holding section 322 can be connecting hole, and second holding section 332 is a trip then, is not limited at this.
In addition, module 300 backlight of the present utility model also comprises a flexible circuit board (flexible printedcircuit board, FPC Board) 336.This flexible circuit board 336 is electrically connected between circuit board 330 and the display panels 400.Particularly, this flexible circuit board 336 for example is COF (chip onfilm) structure.Certainly, flexible circuit board 336 can engage automatically by coil type (Tape AutomaticBonding, TAB) technology or routing (Wire Bonding, W/B) joining technique is made, at this only in order to illustrate painstakingly limitation.
Light-emitting diode chip for backlight unit 340 of the present utility model is disposed on the circuit board 330, and between the incidence surface 310a of framework 320 and light guide plate 310.Particularly, the part light L ' that light-emitting diode chip for backlight unit 340 is sent can be by the reflection of framework 320, and is entered in the light guide plate 310 by incidence surface 310a.In other words, module backlight 300 of the present utility model need not additionally be provided with existing lampshade 150 (as shown in Figure 1).Because module 300 the number of components backlight of the present utility model are less, therefore can effectively reduce the weight and the manufacturing cost of whole module backlight 300.Thus, no matter module backlight 300 of the present utility model is when assembling or doing over again (rework), manufacturing or maintenance personal can both effectively shorten man-hour, to promote production capacity (throughput).
It should be noted that light-emitting diode chip for backlight unit 340 of the present utility model can adopt the light-emitting diode chip for backlight unit 340 of un-encapsulated in order further to reduce manufacturing cost.In addition, module backlight 300 of the present utility model also can comprise a reflector plate 312,334.This reflector plate 334 is configurable on circuit board 330, to reflect the part light that light-emitting diode chip for backlight unit 340 is sent, to promote the utilization ratio of light.On the other hand, reflector plate 312 is configurable in light guide plate 310 belows, with the utilization ratio of further lifting light.In one embodiment, circuit board 330 as shown in Figure 3 has a reflecting surface 330a, and light-emitting diode chip for backlight unit 340 can directly be disposed on the reflecting surface 330a of circuit board 330, and need not adopt reflector plate 334.
In addition, module backlight 300 of the present utility model also comprises an optical diaphragm group 350.This optical diaphragm group 350 is disposed at light guide plate 310 tops.Optical diaphragm group 350 of the present utility model can comprise diffusion sheet (Diffuser film), brightening piece, and (Brightness enhanced film is BEF) with prismatic lens (Prism sheet) one of them or its combination at least.Particularly, the light scattering more equably that diffusion sheet can make light-emitting diode chip for backlight unit 340 be sent, and brightening piece can promote the brightness that module 300 backlight is presented.In addition, prismatic lens can promote the correctness of light light direction.
In sum, framework of the present utility model engages with second holding section by first holding section with circuit board, and the light that light-emitting diode chip for backlight unit sent on the circuit board can be reflexed in the light guide plate by framework.Therefore, module backlight of the present utility model need not additionally be provided with lampshade.Because the number of components of the utility model module backlight is less, therefore the weight and the manufacturing cost of module backlight can both effectively reduce.In addition, because the number of components of the utility model module backlight is less, no matter therefore module backlight is to assemble or do over again, assembling or maintenance personal can both effectively save man-hour and promote production capacity.Liquid crystal display applications of the present utility model module backlight of the present utility model, thereby cheap manufacturing cost can be arranged.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (17)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201939351U CN201203734Y (en) | 2007-10-25 | 2007-10-25 | Liquid crystal display and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201939351U CN201203734Y (en) | 2007-10-25 | 2007-10-25 | Liquid crystal display and backlight module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203734Y true CN201203734Y (en) | 2009-03-04 |
Family
ID=40426046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201939351U Expired - Fee Related CN201203734Y (en) | 2007-10-25 | 2007-10-25 | Liquid crystal display and backlight module thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201203734Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556007B (en) * | 2009-04-30 | 2010-10-13 | 达运精密工业（苏州）有限公司 | Backlight module and display device |
| CN102032511A (en) * | 2010-10-13 | 2011-04-27 | 友达光电股份有限公司 | Backlight module and liquid crystal display module |
| CN101630076B (en) * | 2009-08-18 | 2011-08-03 | 友达光电股份有限公司 | Flat display module |
| CN102621744A (en) * | 2012-04-16 | 2012-08-01 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| US8345179B2 (en) | 2009-07-24 | 2013-01-01 | Au Optronics Corp. | Flat panel display module |
| WO2013131298A1 (en) * | 2012-03-06 | 2013-09-12 | 深圳市华星光电技术有限公司 | Reflection-type light-incident backlight module and liquid crystal display device |
| WO2013143225A1 (en) * | 2012-03-27 | 2013-10-03 | 深圳市华星光电技术有限公司 | Edge-lighting type backlight module and liquid crystal display thereof |
| CN101964160B (en) * | 2009-07-23 | 2014-03-12 | 群创光电股份有限公司 | Display device |
| CN104992625A (en) * | 2010-04-20 | 2015-10-21 | 三星电子株式会社 | Display apparatus |
-
2007
- 2007-10-25 CN CNU2007201939351U patent/CN201203734Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556007B (en) * | 2009-04-30 | 2010-10-13 | 达运精密工业（苏州）有限公司 | Backlight module and display device |
| CN101964160B (en) * | 2009-07-23 | 2014-03-12 | 群创光电股份有限公司 | Display device |
| US8345179B2 (en) | 2009-07-24 | 2013-01-01 | Au Optronics Corp. | Flat panel display module |
| CN101630076B (en) * | 2009-08-18 | 2011-08-03 | 友达光电股份有限公司 | Flat display module |
| CN104992625A (en) * | 2010-04-20 | 2015-10-21 | 三星电子株式会社 | Display apparatus |
| CN104992625B (en) * | 2010-04-20 | 2018-06-05 | 三星电子株式会社 | Display device |
| CN102032511A (en) * | 2010-10-13 | 2011-04-27 | 友达光电股份有限公司 | Backlight module and liquid crystal display module |
| CN102032511B (en) * | 2010-10-13 | 2012-07-04 | 友达光电股份有限公司 | Backlight module and liquid crystal display module |
| WO2013131298A1 (en) * | 2012-03-06 | 2013-09-12 | 深圳市华星光电技术有限公司 | Reflection-type light-incident backlight module and liquid crystal display device |
| WO2013143225A1 (en) * | 2012-03-27 | 2013-10-03 | 深圳市华星光电技术有限公司 | Edge-lighting type backlight module and liquid crystal display thereof |
| CN102621744A (en) * | 2012-04-16 | 2012-08-01 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| WO2013155676A1 (en) * | 2012-04-16 | 2013-10-24 | 深圳市华星光电技术有限公司 | Liquid crystal display 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20161025 |