CN204201660U - Backlight module and liquid crystal display - Google Patents
Backlight module and liquid crystal display Download PDFInfo
- Publication number
- CN204201660U CN204201660U CN201420657263.5U CN201420657263U CN204201660U CN 204201660 U CN204201660 U CN 204201660U CN 201420657263 U CN201420657263 U CN 201420657263U CN 204201660 U CN204201660 U CN 204201660U
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- China
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- backboard
- light guide
- backlight module
- guide plate
- detent
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Abstract
The utility model discloses a kind of backlight module and liquid crystal display, this backlight module comprises: light guide plate, backboard and set screw; Backboard has backboard bending wall; Backboard bending wall is provided with the screwed hole coordinated with set screw; The side of backboard bending wall faced by light guide plate has detent; Set screw extends through the detent direction of the screwed hole on backboard bending wall to light guide plate, is connected in detent.Locating by adopting set screw to coordinate with the screw on backboard, the distance of moving about 2mm outside the detent of light guide plate can be made, thus the image quality of the liquid crystal display of this backlight module of improvement use; And the width reducing front frame makes LCD TV ultra-narrow limit structure be easy to realize; In addition, the price of set screw is also much lower than the price of riveting post thus save production cost.
Description
Technical field
The utility model relates to LCD Technology field, is specifically related to backlight module and liquid crystal display.
Background technology
At present, light guide plate locate mode in LCD backlight module is generally at backboard bottom surface riveted joint riveting post, light guide plate opens detent, light guide plate is located with riveting post, Fig. 1 is light guide plate locate mode cross-sectional schematic in available liquid crystal display backlight module, Fig. 2 is the schematic top plan view of light guide plate locate mode in available liquid crystal display backlight module, and see Fig. 1 and Fig. 2, liquid crystal display comprises: liquid crystal display 1, light guide plate 2, backboard 4, riveting post 3, glue frame 5 and front frame 6; The bottom surface of backboard 4 is riveted riveting post 3, and riveting post 3 coordinates with the detent of light guide plate 2 to realize locating to be fixed.Because riveting post 3 is normally circular, and requirement of strength, that can not be done is too thin, the locating slot that such light guide plate 2 is opened must have certain degree of depth; Moreover, when backboard is riveted riveting post, for preventing rivet force by back plate edges blastic deformation herein, so riveting post marginal position and backboard bending leave about 2mm technique distance.Owing to there is the technique distance of this about 2mm, detent on light guide plate 2 will be close to the module center of LCD TV, and groove can not import light to liquid crystal display, so the position that riveting post is corresponding on liquid crystal display there will be dim spot 8, affect image quality; Simultaneously because the detent of light guide plate 2 is near module center, in the structure of liquid crystal display, fore shell width 61 needs to extend to liquid crystal display module center accordingly, and the width increase of such fore shell can not accomplish ultra-narrow limit.In addition, the price of riveting post is also higher, causes the production cost of liquid crystal display higher.
Utility model content
The utility model provides a kind of backlight module and liquid crystal display, affects image quality can not accomplish ultra-narrow limit and the high problem of production cost with what solve that existing light guide plate locate mode exists.
According to an aspect of the present utility model, provide a kind of backlight module, this backlight module comprises: light guide plate, backboard and set screw;
Backboard has backboard bending wall;
Backboard bending wall is provided with the screwed hole coordinated with set screw;
The side of backboard bending wall faced by light guide plate has detent;
Set screw extends through the detent direction of the screwed hole on backboard bending wall to light guide plate, is connected in detent.
Alternatively, set screw comprises screw terminal and lead screw;
Lead screw comprises head and afterbody, and head is not threaded away from screw terminal, partly for afterbody is threaded outside head.Alternatively, the head of lead screw coordinates with the detent of light guide plate and locates;
Screwed hole on the root of lead screw and backboard bending wall is threaded connection.
Alternatively, the surface of position arranging screwed hole of backboard bending wall has projection on the side of the detent of light guide plate, makes the extension of the screwed hole on backboard bending wall.
Alternatively, the diameter of set screw is 3 or 4 millimeters.
According to another aspect of the present utility model, provide a kind of liquid crystal display, liquid crystal display comprises: as the backlight module of the utility model aspect.
Locating by adopting set screw to coordinate with the screw on backboard, the distance of moving about 2mm outside the detent of light guide plate can be made, thus the image quality of the liquid crystal display of this backlight module of improvement use; And the width reducing front frame makes the ultra-narrow limit structure of liquid crystal display be easy to realize; In addition, the price of set screw is also much lower than the price of riveting post thus save production cost.
Accompanying drawing explanation
Fig. 1 is light guide plate locate mode cross-sectional schematic in available liquid crystal display backlight module;
Fig. 2 is the schematic top plan view of light guide plate locate mode in available liquid crystal display backlight module;
Fig. 3 is backlight module schematic diagram in a kind of liquid crystal display of providing of the utility model embodiment;
Fig. 4 is a kind of backlight module schematic top plan view that the utility model embodiment provides;
Fig. 5 is the structural representation of the set screw that the utility model embodiment provides;
A kind of backlight module schematic top plan view that Fig. 6 the utility model embodiment provides.
Detailed description of the invention
Core concept of the present utility model is: lock at backboard bending wall and pay the set screw of ad hoc structure, replaces riveting post location light guide plate with set screw.The detent of light guide plate outwards can be moved (to backboard bending wall direction) about 2mm like this, when essentially eliminating with riveting post location light guide plate, the technique distance existed between riveting post and backboard bending wall, thus the light guide effect improving light guide plate improves the image quality of liquid crystal display.In addition, owing to there is not technique distance, the detent of light guide plate does not need to extend to module center, and so the width of the fore shell of liquid crystal display also can narrow accordingly, thus can realize the ultra-narrow limit structure of liquid crystal display.
Fig. 3 is backlight module schematic diagram in a kind of liquid crystal display of providing of the utility model embodiment, Fig. 4 is a kind of backlight module schematic top plan view that the utility model embodiment provides, in Fig. 3,11 for liquid crystal display, 12 for light guide plate, 14 for backboard, 15 for glue frame, 16 are front frames; Below in conjunction with Fig. 3 and Fig. 4, this backlight module of the present utility model is schematically illustrated.Backboard has backboard bending wall 141; Backboard bending wall 141 is provided with the screwed hole (not shown in Fig. 4) coordinated with set screw 30; The side of backboard bending wall 141 faced by light guide plate 12 has detent; Set screw 30 extends through the detent direction of the screwed hole on backboard bending wall 141 to light guide plate 12, is connected in detent.
This backlight module of the present utility model, set screw is utilized to replace riveting post, the screwed hole that on backboard bending wall, setting and set screw coordinate, the screwed hole that set screw passes backboard is connected in the detent of light guide plate, make light guide plate detent can move the distance of (to backboard bending wall direction) about 2mm in addition, therefore technique distance between light guide plate and backboard can substantially be cancelled, and then improve the image quality of liquid crystal display, the ultra-narrow limit realizing LCD TV as width of frame 161 before in Fig. 3 can do very narrow, and, the price of the cost ratio riveting post of set screw is low many, also reduce the location cost of light guide plate and the production cost of backlight module.
Fig. 5 is the structural representation of the set screw that the utility model embodiment provides, and see Fig. 5, the set screw 30 that the utility model uses comprises: screw terminal 301 and lead screw 302;
The head 3021 of lead screw 302 is not threaded, and root 3022 is threaded.
In the present embodiment, the head 3021 of lead screw 302 coordinates with the detent of light guide plate 12 and locates; Concrete combination, see Fig. 4, coordinates fixing in the detent that the head 3021 of lead screw 302 stretches into light guide plate 12.
On the root 3022 of lead screw 302 and backboard bending wall, the screwed hole of 141 is threaded connection.
Fig. 6 is a kind of backlight module schematic diagram that the utility model embodiment provides, see Fig. 6, in the present embodiment, backlight module comprises: backboard, light guide plate 12 and set screw 30, the screw terminal 301 of set screw 30 is arranged on that side of backboard bending wall face away from light guide, the root of lead screw is through the screwed hole on backboard bending wall 141, because screwed hole is inner at backboard bending wall 141, therefore not shown in figure 6.The surface of position arranging screwed hole of the backboard bending wall 141 of backboard has protruding 61 on the side of the detent of light guide plate 12, makes the extension of the screwed hole on backboard bending wall 141.Because backboard is usually thinner, in order to increase the fixing stability in location, backboard bending wall arranging one section of projection 61, makes the extension of screwed hole, reaching better fixed effect.
In an embodiment of the present utility model, the diameter of set screw can be 3 or 4 millimeters, when practical application, should consider that the situation of the detent of backboard bending wall and light guide plate selects the set screw of suitable diameter to position.
In addition, the utility model additionally provides a kind of liquid crystal display comprising above-mentioned backlight module, this liquid crystal display is owing to adopting this backlight module of the present utility model, improve the display of liquid crystal display, thus there is higher image quality, and, riveting post is not adopted to position, technique distance between backboard bending wall and riveting post is cancelled, and it is very narrow that the fore shell of such liquid crystal display can do, and adapts to the development trend on liquid crystal display ultra-narrow limit.In addition, this backlight module is adopted can also to save the production cost of liquid crystal display.
To sum up, this backlight module of the present utility model by adopting the locate mode that coordinates with the screw on backboard of set screw, can make to move outside the detent of light guide plate about 2mm from, thus improve the image quality of the liquid crystal display of this backlight module of use; And the width reducing front frame makes LCD TV ultra-narrow limit structure be easy to realize; In addition, the price of set screw is also much lower than the price of riveting post thus save location cost.The liquid crystal display that the utility model provides, owing to have employed this backlight module of the utility model aspect, thus has high-quality screen, ultra-narrow limit and the low advantage of production cost.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., be all included in protection domain of the present utility model.
Claims (6)
1. a backlight module, is characterized in that, this backlight module comprises: light guide plate, backboard and set screw;
Described backboard has backboard bending wall;
Described backboard bending wall is provided with the screwed hole coordinated with described set screw;
The side of described backboard bending wall faced by described light guide plate has detent;
Described set screw extends through the detent direction of the screwed hole on described backboard bending wall to described light guide plate, is connected in described detent.
2. backlight module as claimed in claim 1, it is characterized in that, described set screw comprises screw terminal and lead screw;
Described lead screw comprises head and afterbody, and head portion is not threaded away from screw terminal, partly for afterbody is threaded outside head.
3. backlight module as claimed in claim 2, it is characterized in that, the head of described lead screw coordinates with the detent of described light guide plate locates;
Screwed hole on the root of described lead screw and described backboard bending wall is threaded connection.
4. backlight module as claimed in claim 3, it is characterized in that, the surface of position arranging screwed hole of described backboard bending wall has projection on the side of the detent of described light guide plate, makes the extension of the screwed hole on described backboard bending wall.
5. backlight module as claimed in claim 1, it is characterized in that, the diameter of described set screw is 3 or 4 millimeters.
6. a liquid crystal display, is characterized in that, described liquid crystal display comprises: the backlight module according to any one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657263.5U CN204201660U (en) | 2014-11-05 | 2014-11-05 | Backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657263.5U CN204201660U (en) | 2014-11-05 | 2014-11-05 | Backlight module and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204201660U true CN204201660U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420657263.5U Active CN204201660U (en) | 2014-11-05 | 2014-11-05 | Backlight module and liquid crystal display |
Country Status (1)
| Country | Link |
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| CN (1) | CN204201660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373868A (en) * | 2014-11-05 | 2015-02-25 | 青岛歌尔声学科技有限公司 | Backlight module, liquid crystal display and positioning method of light guide plate in backlight module |
-
2014
- 2014-11-05 CN CN201420657263.5U patent/CN204201660U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373868A (en) * | 2014-11-05 | 2015-02-25 | 青岛歌尔声学科技有限公司 | Backlight module, liquid crystal display and positioning method of light guide plate in backlight module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |