CN101598297B - Light guide plate, backlight module and liquid crystal display device - Google Patents
Light guide plate, backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN101598297B CN101598297B CN2009101395888A CN200910139588A CN101598297B CN 101598297 B CN101598297 B CN 101598297B CN 2009101395888 A CN2009101395888 A CN 2009101395888A CN 200910139588 A CN200910139588 A CN 200910139588A CN 101598297 B CN101598297 B CN 101598297B
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- light source
- lgp
- liquid crystal
- incidence surface
- guide plate
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Abstract
The invention relates to a light guide plate, a backlight module and a liquid crystal display device. The backlight module comprises the light guide plate, a light source and a light source cover, wherein the light guide plate is provided with an incidence surface, the light source is correspondingly arranged on the incidence surface and covered under the light source cover, and one side of the incidence surface of the light guide plate is provided with a positioning groove; and the light source cover is fixed on the light guide plate through the positioning groove. The invention can effectively prevent the light source cover from deforming and the backlight module from leaking light.
Description
Technical field
The present invention particularly is out of shape the LGP of light leak relevant for a kind of light source cover that can prevent about a kind of LGP, module backlight and liquid crystal indicator, and module backlight and the liquid crystal indicator of using this LGP.
Background technology
At present, liquid crystal indicator has been widely used in various electronic products such as computer monitor, television set, notebook computer, mobile phone, digital camera by means of advantages such as frivolous, power saving, low radiation.Because liquid crystal itself is not luminous, therefore need module backlight to provide area source for liquid crystal indicator.And LGP is the critical elements in the module backlight, sends the direction of transfer of light beam in order to the guiding light source, and converts spot light or line source to behind area source outgoing.
See also Fig. 1, Fig. 1 is the schematic diagram of module 10 backlight in the prior art.The light source reflecting housing 11 of traditional side-light type module 10 backlight is to arrange in pairs or groups with LGP 12 clamp-close types, because light source reflecting housing 11 upper surfaces are (shown in the dot-dash coils) that need firmly could to block LGP 12, thus in the process that engages the easy deformation light leak.
Summary of the invention
At above-mentioned technical problem, the present invention opens a groove at LGP near on the direction of light source cover, and the upper surface of light source cover only need be filled in this groove in the assembling light source cover, does not stress in whole assembling process like this, therefore can not be out of shape and light leak.
LGP provided by the invention comprises incidence surface, and this incidence surface one side of this LGP has locating slot.
According to LGP of the present invention, LGP also comprises exiting surface, and this exiting surface is adjacent to incidence surface.
Module backlight provided by the invention comprises LGP, light source and light source cover, this LGP has incidence surface, and this light source correspondence is arranged at this incidence surface, and is enclosed in this light source cover, this incidence surface one side of this LGP has locating slot, and this light source cover is fixed on this LGP by this locating slot.
According to module backlight of the present invention, light source cover has first fixed edge and second fixed edge, and this first fixed edge is inserted in the locating slot.Further, LGP also comprises and the incidence surface bottom surface adjacent, and this second fixed edge and this bottom surface portions are superimposed.
According to module backlight of the present invention, light source is cathode fluorescent tube or light emitting diode.
Liquid crystal indicator provided by the invention comprises liquid crystal cells and above-mentioned module backlight, and this liquid crystal cells is arranged on this module backlight.
By the present invention, can effectively prevent the light leakage phenomena of light source cover distortion and module backlight.
Description of drawings
Fig. 1 is the schematic diagram of module backlight in the prior art;
Fig. 2 is the schematic diagram of module backlight of the present invention;
Fig. 3 is the schematic diagram of liquid crystal indicator of the present invention.
The specific embodiment
For making purpose of the present invention, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows now.
See also Fig. 2, Fig. 2 is the schematic diagram of module backlight 20 of the present invention.Module 20 backlight comprises LGP 22, light source 23 and light source cover 21, LGP 22 has incidence surface 221, and light source 23 correspondences are arranged at incidence surface 221, and is enclosed in light source cover 21, incidence surface one side of LGP 22 has locating slot 220, and light source cover 21 is fixed on the LGP 22 by locating slot 220.
In one embodiment, light source cover 21 has first fixed edge 211 and second fixed edge, 212, the first fixed edges 211 are inserted in the locating slot 220.In actual applications, LGP 22 also comprises with incidence surface 221 bottom surface adjacent 222, the second fixed edges 212 superimposed with bottom surface 222 parts.Light source 23 can be cathode fluorescent tube (CCFL), perhaps is one or two above light emitting diodes (LED).
LGP 22 also comprises exiting surface 223, and exiting surface 223 is adjacent to incidence surface 221.The light that light source 21 sends directly is mapped to or is mapped to incidence surface 221 after light source cover 21 reflection, finally from exiting surface 223 outgoing.
See also Fig. 3, Fig. 3 is the schematic diagram of liquid crystal indicator 30 of the present invention.Liquid crystal indicator 30 comprises liquid crystal cells 31 and above-mentioned module backlight 20, and liquid crystal cells 31 is arranged on the module 20 backlight.Module 20 backlight provides liquid crystal cells 31 needed area sources.
By the present invention, can effectively prevent the light leakage phenomena of light source cover distortion and module backlight.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, change of being done and retouching without departing from the spirit and scope of the present invention all belongs to scope of patent protection of the present invention.
Claims (5)
1. module backlight, comprise LGP, light source and light source cover, this LGP has incidence surface, this light source correspondence is arranged at this incidence surface, and is enclosed in this light source cover, it is characterized in that this incidence surface one side of this LGP has locating slot, this light source cover is fixed on this LGP by this locating slot, wherein, this light source cover has first fixed edge and second fixed edge, and this first fixed edge is inserted in this locating slot.
2. module backlight as claimed in claim 1 is characterized in that: this LGP also comprises and this incidence surface bottom surface adjacent, and this second fixed edge and this bottom surface portions are superimposed.
3. module backlight as claimed in claim 1 is characterized in that: this light source is cathode fluorescent tube or light emitting diode.
4. module backlight as claimed in claim 1 is characterized in that: this LGP also comprises exiting surface, and this exiting surface is adjacent to this incidence surface.
5. liquid crystal indicator is characterized in that comprising:
Liquid crystal cells; And
As each described module backlight among the claim 1-4, this liquid crystal cells is arranged on this module backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101395888A CN101598297B (en) | 2009-06-26 | 2009-06-26 | Light guide plate, backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101395888A CN101598297B (en) | 2009-06-26 | 2009-06-26 | Light guide plate, backlight module and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101598297A CN101598297A (en) | 2009-12-09 |
| CN101598297B true CN101598297B (en) | 2011-08-10 |
Family
ID=41419839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101395888A Expired - Fee Related CN101598297B (en) | 2009-06-26 | 2009-06-26 | Light guide plate, backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101598297B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202708988U (en) * | 2012-07-03 | 2013-01-30 | 深圳安嵘光电产品有限公司 | Light guide plate (LGP) and lighting lamp |
| CN114779524A (en) * | 2022-04-02 | 2022-07-22 | Tcl华星光电技术有限公司 | Reflective display panel and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339179A (en) * | 1992-10-01 | 1994-08-16 | International Business Machines Corp. | Edge-lit transflective non-emissive display with angled interface means on both sides of light conducting panel |
| CN1549020A (en) * | 2003-05-23 | 2004-11-24 | 鸿富锦精密工业（深圳）有限公司 | Back light system |
| CN2831180Y (en) * | 2005-09-09 | 2006-10-25 | 群康科技(深圳)有限公司 | Backlight modular |
-
2009
- 2009-06-26 CN CN2009101395888A patent/CN101598297B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339179A (en) * | 1992-10-01 | 1994-08-16 | International Business Machines Corp. | Edge-lit transflective non-emissive display with angled interface means on both sides of light conducting panel |
| CN1549020A (en) * | 2003-05-23 | 2004-11-24 | 鸿富锦精密工业（深圳）有限公司 | Back light system |
| CN2831180Y (en) * | 2005-09-09 | 2006-10-25 | 群康科技(深圳)有限公司 | Backlight modular |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-145935A 1997.06.06 |
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| Publication number | Publication date |
|---|---|
| CN101598297A (en) | 2009-12-09 |
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Granted publication date: 20110810 Termination date: 20140626 |
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| EXPY | Termination of patent right or utility model |