Economical direct-type backlight assembly

A backlight assembly, direct type technology, used in optics, nonlinear optics, instruments, etc., can solve the problems of high display brightness requirements, high cost of prism sheets, and bulkiness.

Inactive Publication Date: 2018-12-14
苏州东山新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different customers have different requirements for the brightness of LCD monitors. The audio-visual distance of household LCD monitors is relatively short and there is no need for excessive brightness requirements from the perspective of protecting eyesight, reaching 180cd/m 2 That’s enough, but the brightness requirements for outdoor commercial LCD displays are relatively high, and generally need to reach 200cd/m 2 above
The function of the prism sheet is mainly to adjust the light-gathering structure of the li

Method used

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  • Economical direct-type backlight assembly
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  • Economical direct-type backlight assembly

Examples

Experimental program
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Effect test

specific Embodiment example 1

[0025] An economical direct-lit backlight assembly, comprising: a backplane 1, a reflection plate 2, a backlight source 3, and a diffusion sheet 4, the number of the diffusion sheets 4 is 2 to 4, the reflection plate 2 is installed on the inner surface of the backplane 1, and the backlight The source 3 is set above the reflector 2, through the reflector 2, the light emitted from the backlight 3 to the rear and both sides is reflected into the front diffusion sheet 4, and the surface light source processed by the diffusion sheet 4 is provided to the diffusion sheet 4 For the liquid crystal panel 5 in front, the two sides of the back plate 1 are provided with the same number of buckle grooves as the number of diffusion sheets 4. They are in contact with each other, and the distance between the diffusion sheet 4 closest to the liquid crystal panel 5 and the liquid crystal panel 5 is 1-2.5 mm.

[0026] Further, the plurality of diffusion sheets 4 in the direct type backlight assem...

specific Embodiment example 2

[0029] An economical direct-lit backlight assembly, comprising: a backplane 1, a reflection plate 2, a backlight source 3, and a diffusion sheet 4, the number of the diffusion sheets 4 is 2 to 4, the reflection plate 2 is installed on the inner surface of the backplane 1, and the backlight The source 3 is set above the reflector 2, through the reflector 2, the light emitted from the backlight 3 to the rear and both sides is reflected into the front diffusion sheet 4, and the surface light source processed by the diffusion sheet 4 is provided to the diffusion sheet 4 For the liquid crystal panel 5 in front, the two sides of the back plate 1 are provided with the same number of buckle grooves as the number of diffusion sheets 4. They are in contact with each other, and the distance between the diffusion sheet 4 closest to the liquid crystal panel 5 and the liquid crystal panel 5 is 1-2.5 mm.

[0030]Further, the plurality of diffusers 4 in the direct-lit backlight assembly are a...

specific Embodiment 3

[0034] An economical direct-type backlight assembly, comprising: a backplane 1, a reflection plate 2, a backlight source 3, and a diffusion sheet 4, the number of the diffusion sheets 4 is 3, the reflection plate 2 is installed on the inner surface of the backplane 1, and the backlight source 3 It is installed above the reflector 2, through the reflector 2, the light emitted by the backlight 3 to the rear and both sides is reflected into the front diffusion sheet 4, and the surface light source processed by the diffusion sheet 4 is provided to the front of the diffusion sheet 4 The two sides of the back plate 1 are provided with the same number of snap grooves as the number of diffusion sheets 4, and the diffusion sheets 4 are all placed in the snap grooves on both sides of the back plate 1, and between adjacent diffusion sheets 4 They are in contact with each other, and the distance between the diffusion sheet 4 closest to the liquid crystal panel 5 and the liquid crystal pane...

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Abstract

An economical direct-type backlight assembly comprises a back plate, a reflecting plate, a backlight source, and two to four diffusion sheets. The diffusion sheets are formed by diffusion-type diffusion sheets or light-collecting diffusion sheets in a single or mixed assembly mode; the two faces of the diffusion-type diffusion sheets are each of a regular polygonal groove structure and a lenticular bulge correspondingly for diffusing light rays for multiple times, and thus the light brightness and brightness uniformity are improved; the light-collecting diffusion sheets are each of an ABA structure, one of the outer layer faces on the two sides of each light-collecting diffusion sheet is a pattern face and smooth face, and the other outer layer face is a circular-arc-shaped strip bulge ora triangular strip bulge, a middle layer is composed of a transparent matrix and a light diffusion agent, thus the light ray brightness is further increased while light rays are evenly diffused by thelight-collecting diffusion sheets, and the brightness uniformity of the light source is ensured while the production cost of the direct-type backlight assembly is lowered; and by arranging the relative number of the diffusion-type diffusion sheets and the light-collecting diffusion sheets, the using requirements of the backlight assembly for different brightness are met.

Description

technical field [0001] The invention relates to the technical field of LED equipment, in particular to an economical direct-lit backlight assembly. Background technique [0002] Since the liquid crystal display itself cannot emit light, it needs to be provided with a uniform surface light source by a backlight assembly. At present, backlight components are divided into direct-type backlight components and side-type backlight components. The direct-lit backlight assembly usually includes a backplane, a reflector, a backlight, a diffuser, and a prism sheet. Because the direct-lit backlight assembly evenly arranges LED grains behind the liquid crystal panel as a light source, the backlight can be evenly transmitted to the entire screen. , the details of the picture are more delicate and realistic, so the direct-type liquid crystal display still occupies a certain sales market. Different customers have different requirements for the brightness of LCD monitors. The audio-visual...

Claims

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Application Information

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IPC IPC(8): G02F1/13357
CPCG02F1/133605G02F1/133606G02F1/133607
Inventor 张宏兴
Owner 苏州东山新材料科技有限公司
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