CN1987605B - Back light module and liquid crystal display device - Google Patents
Back light module and liquid crystal display device Download PDFInfo
- Publication number
- CN1987605B CN1987605B CN200510121204A CN200510121204A CN1987605B CN 1987605 B CN1987605 B CN 1987605B CN 200510121204 A CN200510121204 A CN 200510121204A CN 200510121204 A CN200510121204 A CN 200510121204A CN 1987605 B CN1987605 B CN 1987605B
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- CN
- China
- Prior art keywords
- guide plate
- light guide
- projection
- slideway
- sidewall
- 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
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- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
Abstract
The invention is related to the backlight module, and the liquid crystal display device. The backlight module includes a light guide plate and a frame. In order to house the light guide plate, the frame includes a first sidewall containing an aperture for the light guide plate to enter into the frame. The aperture is in use for the light guide plate to enter into the frame so as to prevent the frame from distortion caused by extrusion. The backlight module is easy of assembling.
Description
[technical field]
The present invention relates to a kind of module backlight and liquid crystal indicator.
[background technology]
Because the liquid crystal itself in the display panels does not possess the characteristics of luminescence, thereby, in order to reach display effect, need provide a planar light source device to display panels, as module backlight, its function is planar light abundant to display panels supply brightness and that be evenly distributed.
Fig. 1 is a kind of exploded perspective view of prior art liquid crystal indicator.This module 10 backlight comprises a light guide plate 14 and a glue frame 16.
This light guide plate 14 comprises the exiting surface 145 of an incidence surface 144, one adjacent this incidence surface 144, the bottom surface 146 of relative this exiting surface 145 and two opposite flanks 141,142 of adjacent this incidence surface 144.Comprise a projection 147 on this side 141, the thickness of this projection 147 is identical with the thickness of this light guide plate 14.This side 142 comprises two projections 148, and these two projection 148 thickness are 1/2 of these light guide plate 14 thickness, and its lower surface and this bottom surface 146 coplanars.The thickness of this projection 147,148 and the design of position are a kind of " fool proof " designs, are used for preventing wrong assembling.
This glue frame 16 comprises with this projection 147 corresponding grooves 167, with these projection 148 corresponding two grooves 168 and a light source portion 165 is set.
During assembling, this glue frame 16 is accommodated this light guide plate 14, and 144 pairs of this incidence surfaces should be provided with portion's 165 settings by light source.This groove 167 is accommodated the projection 147 of this light guide plate 14, and this groove 168 is accommodated the projection 148 of this light guide plate 14.
Yet, when the groove 167,168 of this glue frame 16 cooperates with the projection 147,148 of this light guide plate 14, mainly be to utilize the elasticity of this glue frame 16 that this projection 147,148 is expressed to 167,168 li of this grooves by force, assembling is inconvenient, and this assembling mode may cause this glue frame 16 distortion, may damage glue frame 16 when serious.
[summary of the invention]
In order to solve the inconvenient problem of prior art module assembling backlight, be necessary to provide a kind of module backlight easy to assembly.
In order to solve the inconvenient problem of prior art liquid crystal indicator assembling, be necessary to provide a kind of liquid crystal indicator easy to assembly.
A kind of module backlight, it comprises a light guide plate and a plastic frame, this framework is accommodated this light guide plate, this light guide plate comprises an incidence surface, respect to one another first side adjacent and second side and a bottom surface adjacent with this incidence surface with this incidence surface, this first side comprises one first projection, this first projection equates with this light guide plate, this second side comprises one second projection, the thickness of this second projection is 1/2nd of light guide plate, and its lower surface and this bottom surface coplanar, this framework comprises a first side wall, this the first side wall comprises that one can enter the opening of this framework for this light guide plate, this framework further comprises one second sidewall, this second sidewall links to each other with this first side wall and comprises first slideway corresponding with this first projection, first slideway is slightly larger than this light guide plate along the Z-direction height, can slide therein for this first projection, this framework also comprises three sidewall relative with this second sidewall, the 3rd sidewall links to each other with this first side wall and comprises second slideway corresponding with this second projection, second slideway is slightly larger than 1/2nd of this light guide plate along the Z-direction height, this first slideway and second slideway and this open communication can be slided therein for this second projection.
A kind of liquid crystal indicator, it comprises the module backlight of a display panels and adjacent this display panels.This module backlight comprises a light guide plate and a plastic frame, this framework is accommodated this light guide plate, this light guide plate comprises an incidence surface, respect to one another first side adjacent and second side and a bottom surface adjacent with this incidence surface with this incidence surface, this first side comprises one first projection, this first projection equates with this light guide plate, this second side comprises one second projection, the thickness of this second projection is 1/2nd of light guide plate, and its lower surface and this bottom surface coplanar, this framework comprises a first side wall, this the first side wall comprises that one can enter the opening of this framework for this light guide plate, this framework further comprises one second sidewall, this second sidewall links to each other with this first side wall and comprises first slideway corresponding with this first projection, first slideway is slightly larger than this light guide plate along the Z-direction height, can slide therein for this first projection, this framework also comprises three sidewall relative with this second sidewall, the 3rd sidewall links to each other with this first side wall and comprises second slideway corresponding with this second projection, second slideway is slightly larger than 1/2nd of this light guide plate along the Z-direction height, this first slideway and second slideway and this open communication can be slided therein for this second projection.
Because the first side wall of the framework of module backlight comprises an opening, light guide plate can enter this framework from this opening, therefore can avoid the frame deformation that causes because of extruding, makes this module backlight easy to assembly.
[description of drawings]
Fig. 1 is a kind of exploded perspective view of prior art liquid crystal indicator.
Fig. 2 is the exploded perspective view of liquid crystal indicator first embodiment of the present invention.
Fig. 3 is the exploded perspective view of liquid crystal indicator second embodiment of the present invention.
[embodiment]
Seeing also Fig. 2, is the exploded perspective view of liquid crystal indicator first embodiment of the present invention.This liquid crystal indicator 2 comprises the module backlight 20 of a display panels 22 and adjacent this display panels 22.This module 20 backlight comprises a light guide plate 24 and a framework 26.
This light guide plate 24 comprises the exiting surface 245 of an incidence surface 244, one adjacent this incidence surface 244, the bottom surface 246 of relative this exiting surface 245 and two opposite flanks 241,242 of adjacent this incidence surface 244.This side 241 comprises a projection 247, and the thickness of this projection 247 is identical with the thickness of this light guide plate 24.This side 242 comprises two projections 248, the thickness of these two projections 248 be this light guide plate 24 thickness 1/2, and its lower surface and this bottom surface 246 coplanars.
This framework 26 comprises four sidewalls 266,268,264,267, these four sidewalls 266,268,264,267 join end to end, thereby define a receiving space 260 and be used for accommodating this light guide plate 24, this sidewall 266 comprises that the light source that relative this sidewall 264 is provided with is provided with portion 265.This sidewall 264 comprises an opening 2640, and this opening 2640 all is slightly larger than the height and the width of this light guide plate 24 along the height of Z-direction, along the width of Y direction.These sidewall 267 inboards comprise a slideway 2670, and these sidewall 268 inboards also comprise a slideway 2680, and these two slideways 2670,2680 are communicated with this opening 2640.This slideway 2670 is slightly larger than the thickness of this light guide plate 24 along the height of Z-direction, promptly be substantially equal to the height of this opening along Z-direction, this slideway 2680 is slightly larger than 1/2 of these light guide plate 24 thickness along the height of Z-direction, these two slideways 2670,2680 are corresponding with these projection 247,248 positions respectively, and the projection 247,248 of this light guide plate 24 can enter and slide in this slideway 2670,2680.
During assembling, the opening 2640 of this light guide plate 24 along X-direction from this framework 26 enters this framework 26, and 244 pairs of this incidence surfaces should be provided with portion 265 by light source.This projection 247 slides along this slideway 2680 along this slideway 2670, this projection 248.This projection 247,248 correspondence respectively is contained in this slideway 2670,2680.
These light guide plate 24 materials can be polymethylmethacrylate (polymethylmethacrylate, PMMA) or polycarbonate (polycarbonate, PC).The material of this framework 26 can be plastics.
This module 20 backlight cooperates with the slideway 2670,2680 of sidewall 267,268 by the opening 2640 on the sidewall 264 of framework 26, be used to provide this light guide plate 24 and enter this framework 26 and slip therein, avoid causing its distortion, make the easy to assembly of this module 20 backlight because of extruded frame 26.
Seeing also Fig. 3, is the exploded perspective view of liquid crystal indicator second embodiment of the present invention.This liquid crystal indicator 3 comprises the module backlight 30 of a display panels 32 and adjacent this display panels 32.This module 30 backlight and module backlight 20 are roughly the same, its key distinction is: the side 341,342 of its light guide plate 34 is even surface, it is bumpless, this framework 36 is symmetrical slideway with these side 341,342 corresponding slideways 3670,3680, these two slideways 3670,3680 are communicated with this opening 3640, this opening 3640 and these two slideways, 3670,3680 height along Z-direction are slightly larger than the thickness of this light guide plate 34, and this opening 3640 is slightly larger than the width along Y direction of this light guide plate 34 along the width of Y direction.This slideway 3670,3680 and this opening 3640 enter for this light guide plate 34 and slide therein.
Claims (5)
1. module backlight, it comprises that a light guide plate and accommodates the plastic frame of this light guide plate, this light guide plate comprises an incidence surface, respect to one another first side adjacent and second side and a bottom surface adjacent with this incidence surface with this incidence surface, this first side comprises one first projection, this first projection equates with this light guide plate, this second side comprises one second projection, the thickness of this second projection is 1/2nd of light guide plate, and its lower surface and this bottom surface coplanar, this framework comprises a first side wall, it is characterized in that: this first side wall comprises that one can enter the opening of this framework for this light guide plate, this framework further comprises one second sidewall, this second sidewall links to each other with this first side wall and comprises first slideway corresponding with this first projection, first slideway is slightly larger than this light guide plate along the Z-direction height, can slide therein for this first projection, this framework also comprises three sidewall relative with this second sidewall, the 3rd sidewall links to each other with this first side wall and comprises second slideway corresponding with this second projection, second slideway is slightly larger than 1/2nd of this light guide plate along the Z-direction height, this first slideway and second slideway and this open communication can be slided therein for this second projection.
2. module backlight as claimed in claim 1 is characterized in that: this opening is communicated with this slideway.
3. module backlight as claimed in claim 2 is characterized in that: the material of this light guide plate is a polymethylmethacrylate.
4. module backlight as claimed in claim 2 is characterized in that: the material of this light guide plate is a polycarbonate.
5. liquid crystal indicator, it comprises the module backlight of a display panels and adjacent this display panels, this module backlight is a module backlight as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510121204A CN1987605B (en) | 2005-12-23 | 2005-12-23 | Back light module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510121204A CN1987605B (en) | 2005-12-23 | 2005-12-23 | Back light module and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987605A CN1987605A (en) | 2007-06-27 |
| CN1987605B true CN1987605B (en) | 2010-05-12 |
Family
ID=38184457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510121204A Expired - Fee Related CN1987605B (en) | 2005-12-23 | 2005-12-23 | Back light module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1987605B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018171052A1 (en) * | 2017-03-24 | 2018-09-27 | 华为技术有限公司 | Backlight module and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001117075A (en) * | 1999-10-13 | 2001-04-27 | Alps Electric Co Ltd | Liquid crystal display device |
| CN1349126A (en) * | 2000-10-13 | 2002-05-15 | 三星电子株式会社 | Back light component used for liquid crystal display device |
| US6445373B1 (en) * | 1998-09-10 | 2002-09-03 | Sony Corporation | Display apparatus |
-
2005
- 2005-12-23 CN CN200510121204A patent/CN1987605B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445373B1 (en) * | 1998-09-10 | 2002-09-03 | Sony Corporation | Display apparatus |
| JP2001117075A (en) * | 1999-10-13 | 2001-04-27 | Alps Electric Co Ltd | Liquid crystal display device |
| CN1349126A (en) * | 2000-10-13 | 2002-05-15 | 三星电子株式会社 | Back light component used for liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1987605A (en) | 2007-06-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20100512 Termination date: 20171223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |