CN208861118U

CN208861118U - A kind of backlight module

Info

Publication number: CN208861118U
Application number: CN201821274712.2U
Authority: CN
Inventors: 彭大明; 胡榕建; 骆志锋
Original assignee: Shenzhen Tongxingda Technology Co Ltd
Current assignee: Shenzhen Tongxingda Technology Co Ltd
Priority date: 2018-08-08
Filing date: 2018-08-08
Publication date: 2019-05-14
Anticipated expiration: 2028-08-08

Abstract

The utility model discloses a kind of backlight module, it include: light guide plate, diaphragm unit and barricade, diaphragm slot is formed in the middle part of light guide plate, light guide plate top surface edge upwardly extends to form the barricade, platform of the light guide plate between the barricade and diaphragm slot is glass guide channel, is equipped with several light troughs that can accommodate lamp bar in diaphragm slot；Diaphragm unit includes diffusion sheet, lower brightening piece, upper brightening piece and shading glue, diffusion sheet, lower brightening piece and upper brightening piece are successively attached in the diaphragm slot, the total overall thickness of the diffusion sheet, lower brightening piece and upper brightening piece is identical as the depth of the diaphragm slot, the shading glue is in Back Word type and is attached at the glass guide channel and upper brightening piece surface, and the top surface and side of the bottom surface of the light guide plate and four sides and barricade are equipped with reflecting layer.The utility model part is less, it is whole it is frivolous is easily assembled to, be conducive to save production cost and promote assembly yields, the brightness of light is high out and light is uniform, is conducive to improve customer satisfaction.

Description

A kind of backlight module

Technical field

The utility model relates to technical field of liquid crystal display more particularly to a kind of backlight modules.

Background technique

Backlight module is one of the key part and component of panel of LCD.Function is well-off brightness and distribution Uniform light source can normally show that image, common backlight module mainly have light source, iron frame, glue frame, light guide plate, reflection The composition such as piece and optical diaphragm, and the backlight module side bright line of narrow frame is not easy to handle at present, and glue frame is tiny easily-deformable, it is whole A backlight module assembling is difficult.

Therefore, the prior art is defective, needs to improve.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of backlight module.

The technical solution of the utility model is as follows: the utility model provides a kind of backlight module, comprising: light guide plate, diaphragm Component and barricade, the light guide plate middle part are formed with diaphragm slot, and the light guide plate top surface edge upwardly extends to form the gear Wall, platform of the light guide plate between the barricade and diaphragm slot are glass guide channel, be equipped in the diaphragm slot it is several can be with Accommodate the light trough of lamp bar；The diaphragm unit includes diffusion sheet, lower brightening piece, upper brightening piece and shading glue, the diffusion sheet, under Brightening piece and upper brightening piece are successively attached in the diaphragm slot, and the diffusion sheet, lower brightening piece and upper brightening piece add up to total Thickness is identical as the depth of the diaphragm slot, and the shading glue is in Back Word type and is attached at the glass guide channel and upper brightening piece table The top surface and side of face, the bottom surface of the light guide plate and four sides and barricade are equipped with reflecting layer.

Further, the total overall thickness of the upper brightening piece, lower brightening piece and diffusion sheet is 0.2 millimeter, the diaphragm The depth of slot is 0.2 millimeter.

Further, the reflecting layer is silver layer.

Further, the silver layer with a thickness of 0.03 millimeter.

Further, the silver layer surface covers matcoveredn.

Preferably, the protective layer is PET (polyethylene terephthalate) film.

Further, the material of the light guide plate is PC (polycarbonate) or PMMA (polymethyl methacrylate).

Further, the light guide plate bottom is formed with several hemispherical protuberances of array arrangement, the hemispherical protuberances Diameter be 20 microns -30 microns.

Preferably, the hemispherical protuberances correspond to the output optical zone setting of the backlight module, the hemispherical protuberances arrangement Region be greater than the output optical zone of the light guide plate, the region of hemispherical protuberances arrangement is rectangle, and the edge of the rectangle is extremely The horizontal distance of the output optical zone corresponding edge is 0.5 millimeter -0.8 millimeter.

Using the above scheme, the utility model part is less, it is whole it is frivolous is easily assembled to, be conducive to save production cost and Assembly yields is promoted, the brightness of light is high out and light is uniform, is conducive to improve customer satisfaction.

Detailed description of the invention

Fig. 1 is the utility model light conducting plate structure schematic diagram.

Specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.

Referring to Fig. 1, the utility model provides a kind of backlight module, comprising: light guide plate 1, diaphragm unit and barricade 11, institute It states and is formed with diaphragm slot in the middle part of light guide plate 1,1 top surface edge of light guide plate upwardly extends to form the barricade 11, described to lead Platform of the tabula rasa 1 between the barricade 11 and diaphragm slot is glass guide channel 12, and lamp bar can be accommodated by being equipped in the diaphragm slot Two light troughs 3；The diaphragm unit includes diffusion sheet, lower brightening piece, upper brightening piece and shading glue, the diffusion sheet, lower increasing Mating plate and upper brightening piece are successively attached in the diaphragm slot, the total total thickness of the diffusion sheet, lower brightening piece and upper brightening piece Degree is identical as the depth of the diaphragm slot, and the total overall thickness of the upper brightening piece, lower brightening piece and diffusion sheet is 0.2 millimeter, The depth of the diaphragm slot is 0.2 millimeter, and the shading glue is in Back Word type and is attached at the glass guide channel and upper brightening piece surface, The bottom surface of the light guide plate 1 and the top surface and side of four sides and barricade 11 are equipped with reflecting layer.The reflecting layer is silver Layer.The silver layer with a thickness of 0.03 millimeter, can be conducive to promote light guide plate emitting brightness and promote the lamp bar efficiency, institute Silver layer surface covering matcoveredn is stated, the protective layer is PET film, with a thickness of 0.02 millimeter, can prevent silver layer from assembling and transporting It falls off during defeated and influences 1 working effect of light guide plate.

The light guide plate 1 is PC or PMMA through injection molding, and good in optical property, intensity is big, so that display module no longer needs to Complicated assembly is carried out, 1 bottom of light guide plate is formed with several hemispherical protuberances of array arrangement, the hemispherical protuberances Diameter is 20 microns -30 microns, and the hemispherical protuberances correspond to the output optical zone setting of the backlight module, the hemispherical protuberances The region of arrangement is rectangle, and the horizontal distance of edge to the output optical zone corresponding edge of the rectangle is 0.5 millimeter of -0.8 milli Rice, can guarantee that light is uniformly projected from output optical zone.

In conclusion the backlight module part is less, entirety is frivolous to be easily assembled to, and is conducive to save production cost and be mentioned Assembly yields is risen, the brightness of light is high out and light is uniform, is conducive to improve customer satisfaction.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.

Claims

1. a kind of backlight module characterized by comprising light guide plate, diaphragm unit and barricade, the light guide plate middle part are formed with Diaphragm slot, the light guide plate top surface edge upwardly extend to form the barricade, and the light guide plate is located at the barricade and diaphragm Platform between slot is glass guide channel, is equipped with several light troughs that can accommodate lamp bar in the diaphragm slot；The diaphragm unit includes Diffusion sheet, lower brightening piece, upper brightening piece and shading glue, the diffusion sheet, lower brightening piece and upper brightening piece are successively attached at described In diaphragm slot, the total overall thickness of the diffusion sheet, lower brightening piece and upper brightening piece is identical as the depth of the diaphragm slot, described Shading glue is in Back Word type and is attached at the glass guide channel and upper brightening piece surface, the bottom surface of the light guide plate and four sides and The top surface and side of barricade are equipped with reflecting layer.

2. backlight module according to claim 1, which is characterized in that the upper brightening piece, lower brightening piece and diffusion sheet close The overall thickness of meter is 0.2 millimeter, and the depth of the diaphragm slot is 0.2 millimeter.

3. backlight module according to claim 1, which is characterized in that the reflecting layer is silver layer.

4. backlight module according to claim 3, which is characterized in that the silver layer with a thickness of 0.03 millimeter.

5. backlight module according to claim 4, which is characterized in that the silver layer surface covers matcoveredn.

6. backlight module according to claim 5, which is characterized in that the protective layer is PET film.

7. backlight module according to claim 1, which is characterized in that the material of the light guide plate is PC or PMMA.

8. backlight module according to claim 1, which is characterized in that if the light guide plate bottom is formed with array arrangement Dry hemispherical protuberances, the diameter of the hemispherical protuberances are 20 microns -30 microns.

9. backlight module according to claim 8, which is characterized in that the hemispherical protuberances correspond to the backlight module Output optical zone setting, the region of the hemispherical protuberances arrangement are greater than the output optical zone of the light guide plate, the hemispherical protuberances arrangement Region be rectangle, the horizontal distance of edge to the output optical zone corresponding edge of the rectangle is 0.5 millimeter -0.8 millimeter.