CN203349083U - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN203349083U CN203349083U CN2013203853276U CN201320385327U CN203349083U CN 203349083 U CN203349083 U CN 203349083U CN 2013203853276 U CN2013203853276 U CN 2013203853276U CN 201320385327 U CN201320385327 U CN 201320385327U CN 203349083 U CN203349083 U CN 203349083U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000005282 brightening Methods 0.000 claims description 7
- 238000009792 diffusion process Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000012788 optical film Substances 0.000 abstract 4
- 230000000007 visual effect Effects 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 26
- 230000003287 optical effect Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000931705 Cicada Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
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- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model describes a backlight module and liquid crystal display device, wherein backlight module includes: a display unit for displaying an image; a light source; a light guide plate disposed at one side of the light source; an optical film disposed over the light guide plate; the frame is provided with a first groove and a second groove. The first groove is used for accommodating the light source and the light guide plate, the second groove is used for accommodating the optical film, and the length and/or the width of the optical film are respectively greater than the sum of the length and/or the width of the light source and the light guide plate; and the shading material is arranged at the gap between the second groove and the optical film. The utility model provides a backlight unit and use this backlight unit's liquid crystal display device can improve the problem of visual zone edge bright line in a poor light greatly.
Description
Technical field
The utility model relates to a kind of liquid crystal indicator, relates in particular to a kind of backlight module for liquid crystal indicator.
Background technology
Liquid crystal display is owing to using the advantages such as operating voltage is low, power consumption is little, display mode is flexible, radiation is low, liquid crystal display (Liquid Crystal Display, LCD) be widely used in various fields, as fields such as computer, mobile phone, TV and measurement demonstrations.Display panels comprises thin film transistor base plate, color film and is folded in the layer of liquid crystal molecule between two substrates.
Because the liquid crystal used in display panels is not self luminous material, but light quantity is modulated to show on screen and therefore, need to be had discrete light source, for light shining the backlight module on liquid crystal panel by the light-receiving material of image.
In prior art, the backlight module of liquid crystal indicator comprises light source (not shown), LGP 2, reflector plate 3, blooming piece 4 and glue frame 5.As shown in Figure 1, light penetrates from the light source (not shown) its concrete structure, from LGP 2 sides, inject, through dot surface 7 break up with reflector plate 3 reflections after, from the exiting surface 8 of LGP 2, penetrate, then light penetrates after multi-layer optical membrane 4.
Light through the reflection of glue frame, does not block and disperses directly and spill from the gap of glue frame and LGP, optical model sheet from LGP penetrates.Make the backlight visible area light leakage phenomena occur.Produce part partially bright, or bright line is bad, affects display effect.In prior art, attach shading rubber belt 6 by the gap at glue frame and LGP, optical model sheet and solve the light leak problem, the advantage of the method is that technique is simple, but problem is DeGrain, can't meet the demand of high standard product.Another puts important deficiency is that shading rubber belt more approaches the display floater visible area, shading rubber belt self colloid and badly more easily being found of cutting.Thereby cause bright spot, the appearance of the problems such as cull.
The utility model content
The liquid crystal indicator that the utility model provides a kind of backlight module and used this backlight module, in order to the light leak problem in the gap that solves the glue frame that exists in prior art and LGP, optical model sheet.
The backlight module that the utility model provides comprises: light source; LGP, be arranged on described light source one side; Blooming piece, be arranged on described LGP, and described blooming piece comprises diffusion sheet and brightening piece, for making the light homogeneous radiation from the LGP outgoing; Reflecting plate or a reflector plate that is arranged on the LGP below, for reflecting to the LGP exiting surface from the light of LGP incident; Framework, described framework has the first groove and the second groove.The first groove is for holding described light source and LGP, and the second groove is for holding described blooming piece, and the length of described the second groove and/or width are greater than respectively length and/or the width of described the first groove; Light screening material, described light screening material covers the gap of described the second groove madial wall and the formation of described blooming piece fully.
The utility model also provides a kind of liquid crystal indicator that uses described backlight module, comprising: one for showing the display unit of image; A described backlight module, comprise framework, has described the first groove, described the second groove, also comprises the 3rd groove.Described the first groove is for holding described light source and LGP, and described the second groove is for holding described blooming piece, and described the 3rd groove is for holding described display unit.
The backlight module that the utility model provides and the liquid crystal indicator that uses this backlight module, the size of increase optical model sheet, directly block the gap between glue frame and LGP, can greatly improve the phenomenon of visible area backlight edge bright line.In addition, advantage of the present utility model is not adopt complicated technology mode, not changing technological parameter, do not increase material cost, do not change on the basis of material and improve yield, does not increase the difficulty of assembling simultaneously.
The accompanying drawing explanation
The sectional view that Fig. 1 is backlight module in prior art;
The planar structure schematic diagram that Fig. 2 is glue frame in the utility model embodiment mono-;
The partial enlarged drawing that Fig. 3 is glue frame in Fig. 2;
The sectional view that Fig. 4 is backlight module in the utility model embodiment mono-;
The planar structure schematic diagram that Fig. 5 is glue frame in the utility model embodiment bis-;
The partial enlarged drawing that Fig. 6 is glue frame in Fig. 5;
Fig. 7 is the liquid crystal indicator sectional view in the utility model embodiment tri-.
Accompanying drawing explanation: 1, light source; 2, LGP; 3, reflector plate; 4, blooming piece; 5, glue frame; 6, shading rubber belt; 7, dot surface; 8, LGP exiting surface; 9, light; 10 first grooves; 11, the second groove; 12, the 3rd groove; 13, chamfering; 14, LGP side; 15, display unit; 16, LED light trough.
The specific embodiment
The utility model provides a kind of backlight module, and it comprises: light source; LGP, be arranged on described light source one side; Blooming piece, be arranged on described LGP, and described blooming piece comprises diffusion sheet and brightening piece, for making the light homogeneous radiation from the LGP outgoing; Reflecting plate or a sheet that is arranged on the LGP below, for reflecting to the LGP exiting surface from the light of LGP incident; Framework, described framework has the first groove and the second groove.The first groove is for holding described light source and LGP, and the second groove is for holding described blooming piece, and the length of described the second groove and width are greater than respectively length and the width of described the first groove; Light screening material, be arranged on the gap location that described the second groove and described blooming piece form.Described backlight module can solve the light leak problem in the gap of the glue frame that exists in prior art and LGP, optical model sheet, can greatly improve the problem of visible area backlight edge bright line simultaneously.
Scheme below in conjunction with Figure of description to the utility model embodiment is described in detail, but the utility model is not limited to the following examples.
Embodiment mono-
Please refer to Fig. 2 and Fig. 3, the top view that Fig. 2 is glue frame in the utility model embodiment mono-, Fig. 3 is the partial enlarged drawing in Fig. 2.From Fig. 2 and Fig. 3, can find out, the glue frame that the present embodiment provides has the first groove 10 and the second groove 11.Described the first groove 10 and described the second groove 11 be arranged at interior relative light source 1 one sides of glue frame 5 and with the zone of light source 1 adjacent both sides in, the stepped distribution of sidewall of described the first groove 10 and described the second groove 11, described the second groove 11 is positioned on described the first groove 10.The length of described the first groove 10 and width are less than respectively length and the width of described the second groove 11.
Please refer to Fig. 4, the sectional view that Fig. 4 is a kind of backlight module of the utility model embodiment.As can be seen from Figure 4, described glue frame 5 has described the first groove 10 and described the second groove 11.The first groove 10 is not shown for holding described light source 1() and LGP 2, the second groove 11 is for holding described blooming piece 4, described blooming piece 4 comprises diffusion sheet and brightening piece, for will be from the light homogeneous radiation of LGP 2 outgoing to display unit (not shown) surface, the upper end, gap contacted with blooming piece 4 at described the second groove 11 is pasted with shading rubber belt 6, the light leak zone in the gap that described the second groove 11 of shading rubber belt 6 covering contacts with blooming piece 4.In theory, it is not shown that the length of described the first groove 10 and width should equal respectively described light source 1() and described LGP 2 add and after length and width; The length of described the second groove 11 and width should equal respectively length and the width of described blooming piece 4, but due to problems such as machining accuracy, assemblings, the length of described the first groove 10 and width are not shown with described light source 1() and described LGP 2 add and after length and width can not equate fully, formed gap, at this moment the length of described blooming piece 4 and width be greater than respectively that described light source 1 and LGP 2 add and after length and width, grow respectively 0.25mm, just can reduce the light leak in described the first groove 10 and described LGP 2 gaps; Same, due to problems such as machining accuracy, assemblings, the length of described the second groove 11 and width can not equate fully with length and the width of described blooming piece 4 yet, formed gap, attach shading rubber belt 6 by the upper end, gap 4 of described the second groove 11 and blooming pieces, greatly weakened the light leak in the gap of 4 of described the second groove 11 and blooming pieces.
As can be seen from Figure 4, light source 1(is not shown) can be spot light or line source, light 9 is not shown from described light source 1() send, from the incidence surface (not shown) of described LGP 2, inject, after the scattering of described light 9 being carried out through the trickle salient point in dot surface 7 and the reflection of 3 pairs of described light 9 of reflector plate, most of described light 9 penetrates from described LGP 2 exiting surfaces 8, some is through described glue frame 5 reflections from described LGP side 14 is penetrated, from described glue frame 5, the madial wall of interior described the first groove 10 and the gap of described LGP 2 spill, through described blooming piece 4, overwhelming majority light 9 enters the display unit (not shown), also remaining small part light 9 does not enter the display unit (not shown) and is blocked by described shading rubber belt 6.
The backlight module that the present embodiment one provides has directly been broken the structural design of traditional small size backlight, do not strengthen shading rubber belt size or change shading rubber belt material, but directly on glue frame plane of the opening, cut again a face, increase the size of optical model sheet on the basis of this face, directly block the gap between glue frame and LGP, make to penetrate line from LGP and again through reflection and refraction, be used rather than directly spill.Change the direction of light source from source, greatly improved the phenomenon of visible area backlight edge bright line.
Embodiment bis-
Please refer to Fig. 5 and Fig. 6, wherein, the top view that Fig. 5 is glue frame in the utility model embodiment bis-, the partial enlarged drawing that Fig. 6 is glue frame in Fig. 5.From Fig. 5 and Fig. 6, can find out, the glue frame that the present embodiment provides has the first groove 10, the second groove 11 and LED light trough 16.Described the first groove 10 and described the second groove 11 are arranged in the zone of a side of the interior relative described LED light trough 16 of glue frame 5 and both sides adjacent with described LED light trough 16, the stepped distribution of sidewall of described the first groove 10 and described the second groove 11, described the second groove is positioned on described the first groove.The length of described the first groove 10 and width are less than respectively length and the width of described the second groove 11.Described the second groove forms chamfering 13 at sidewall and the adjacent wall of described LED light trough 16 1 sides, and the both sides angle of preferred described chamfering 13 is not less than 120 °.Described the second groove is used near described LED light trough 16 places the chamfer design that is greater than 120 °, avoids place, right angle light-ray condensing, has improved the phenomenon of the bright spot at described LED light trough 16 places.
The present embodiment also comprises the backlight module that uses above-mentioned glue frame, and its concrete structure, with reference to the described back light module unit structure of embodiment mono-, no longer repeats at this.
Embodiment tri-
On the basis of above-mentioned backlight module, the utility model also provides a kind of liquid crystal indicator that uses described backlight module.As Fig. 7 shows, described liquid crystal indicator comprises: a display unit 15 for showing image; A backlight module comprises: light source 1; LGP 2, be arranged on described light source 1(not shown) side; Blooming piece 4, be arranged on LGP 2, described blooming piece 4 comprises diffusion sheet and brightening piece, in the present embodiment, described blooming piece 4 is followed successively by diffusion sheet, the first brightening piece, the second brightening piece from down to up, the composition of described blooming piece 4 and distributing order capable of regulating, be not limited only to the present embodiment, for making from the light homogeneous radiation of LGP 2 outgoing; Framework 5, the present embodiment is preferably the glue frame, has described the first groove 10 and described the second groove 11, also comprises the 3rd groove 12.The first groove 10 is not shown for holding described light source 1() and LGP 2, the second groove 11 is for holding described blooming piece 4, the length of described the second groove and width are greater than respectively length and the width of described the first groove, it is not shown that the length of described blooming piece 4 and width are greater than respectively described light source 1() and LGP 2 add and after length and width, the 3rd groove 12 is for holding described display unit 15; Be pasted with shading rubber belt 6 at described the second groove 11 with the gap that described blooming piece 4 contacts.The stepped distribution of sidewall of described the first groove 10, described the second groove 11 and described the 3rd groove 12, be followed successively by described the first groove 10, described the second groove 11 and described the 3rd groove 12 from bottom to up.The length of described the first groove 10 and width are less than respectively length and the width of described the second groove 11; The length of described the second groove 11 and width are greater than respectively maximum length and the Breadth Maximum of described the first groove 10, are less than length and the width of described the 3rd groove 12; The length of described the 3rd groove 12 and width are greater than respectively length and the width of described the second groove 11, equal length and the width of described display unit.
Advantage of the present utility model is not adopt complicated technology mode, not changing technological parameter, do not increase material cost, do not change on the basis of material and improve yield, do not increase the difficulty of assembling simultaneously, greatly improve the phenomenon of visible area backlight edge bright line, improved the display effect of liquid crystal indicator.
Although described preferred embodiment of the present utility model, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the utility model scope.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. a backlight module comprises:
Light source;
LGP, be arranged on described light source one side;
Blooming piece, be arranged on described LGP;
Framework, described framework has the first groove, the second groove, and wherein, described the first groove is for accommodating described light source and LGP, described the second groove is for accommodating described blooming piece, and the length of described the second groove and/or width are greater than respectively length and/or the width of described the first groove;
Light screening material, be arranged on the gap location that described the second groove and described blooming piece form.
2. backlight module as claimed in claim 1, is characterized in that, also comprises reflecting plate or a reflector plate that is arranged on the LGP below, for reflecting to the LGP exiting surface from the light of LGP incident.
3. backlight module as claimed in claim 1, is characterized in that, described blooming piece comprises diffusion sheet and brightening piece, for making the light homogeneous radiation from the LGP outgoing.
4. backlight module as claimed in claim 1, is characterized in that, described the first groove and the second groove be arranged at relative light source one side in framework and/or with the zone of the adjacent both sides of light source in.
5. backlight module as claimed in claim 1, is characterized in that, the stepped distribution of sidewall of described the first groove and the second groove, and described the second groove is positioned on described the first groove.
6. backlight module as claimed in claim 5, is characterized in that, the length of described the first groove and width equal respectively that described light source and described LGP add and after length and width; The length of described the second groove and width are greater than respectively length and the width of described the first groove, equal length and the width of described blooming piece.
7. backlight module as claimed in claim 5, is characterized in that, described the second groove forms chamfering near sidewall and the adjacent wall of backlight one side.
8. backlight module as claimed in claim 1, is characterized in that, described light screening material covers the gap of described the second groove madial wall and the formation of described blooming piece fully.
9. a liquid crystal indicator comprises:
One for showing the display unit of image;
A backlight module as described as claim 1～8 any one, wherein said framework further comprises the 3rd groove, the 3rd groove is for holding described display unit.
10. liquid crystal indicator as claimed in claim 9, it is characterized in that, described the 3rd groove is positioned on described the second groove, and the length of described the 3rd groove and width are greater than respectively length and the width of described the second groove, equals length and the width of described display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203853276U CN203349083U (en) | 2013-06-28 | 2013-06-28 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203853276U CN203349083U (en) | 2013-06-28 | 2013-06-28 | Backlight module and liquid crystal display device |
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| Publication Number | Publication Date |
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| CN203349083U true CN203349083U (en) | 2013-12-18 |
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| CN2013203853276U Expired - Lifetime CN203349083U (en) | 2013-06-28 | 2013-06-28 | Backlight module and liquid crystal display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698828A (en) * | 2015-03-17 | 2015-06-10 | 深圳市华星光电技术有限公司 | Intelligent wrist watch and liquid crystal display |
| CN107102469A (en) * | 2017-06-05 | 2017-08-29 | 京东方科技集团股份有限公司 | A kind of atomization adhesive tape and display device for display device |
| CN108613095A (en) * | 2017-01-03 | 2018-10-02 | 联嘉光电股份有限公司 | Light emitting device and vehicle-mounted light emitting device |
| CN109239977A (en) * | 2018-11-12 | 2019-01-18 | 厦门天马微电子有限公司 | A kind of backlight and display panel |
| CN109426032A (en) * | 2017-08-28 | 2019-03-05 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN115826296A (en) * | 2022-12-20 | 2023-03-21 | 武汉华星光电技术有限公司 | Backlight module |
-
2013
- 2013-06-28 CN CN2013203853276U patent/CN203349083U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698828A (en) * | 2015-03-17 | 2015-06-10 | 深圳市华星光电技术有限公司 | Intelligent wrist watch and liquid crystal display |
| CN108613095A (en) * | 2017-01-03 | 2018-10-02 | 联嘉光电股份有限公司 | Light emitting device and vehicle-mounted light emitting device |
| CN107102469A (en) * | 2017-06-05 | 2017-08-29 | 京东方科技集团股份有限公司 | A kind of atomization adhesive tape and display device for display device |
| WO2018223688A1 (en) * | 2017-06-05 | 2018-12-13 | 京东方科技集团股份有限公司 | Diffusion tape for display device and display device |
| CN107102469B (en) * | 2017-06-05 | 2020-05-22 | 京东方科技集团股份有限公司 | Atomizing adhesive tape for display device and display device |
| CN109426032A (en) * | 2017-08-28 | 2019-03-05 | 京东方科技集团股份有限公司 | Backlight module and display device |
| WO2019041986A1 (en) * | 2017-08-28 | 2019-03-07 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN109426032B (en) * | 2017-08-28 | 2020-04-24 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US10908458B2 (en) | 2017-08-28 | 2021-02-02 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Backlight module and display device for achieving brightness uniformity |
| CN109239977A (en) * | 2018-11-12 | 2019-01-18 | 厦门天马微电子有限公司 | A kind of backlight and display panel |
| CN115826296A (en) * | 2022-12-20 | 2023-03-21 | 武汉华星光电技术有限公司 | Backlight module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |
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| CX01 | Expiry of patent term |