Multi-layer variable combined diffusion plate

A diffuser plate, combined technology, applied in the direction of layered products, synthetic resin layered products, chemical instruments and methods, etc., can solve the problem that the light emitting efficiency and light emitting uniformity have not achieved good results, there are not many research results, and the light emitting Efficiency reduction and other problems, to achieve the effect of strong anti-ultraviolet absorption ability

Inactive Publication Date: 2013-03-13
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the addition of diffusion particles, the diffusion plate has the ability to diffuse light, but the absorption of light by the diffusion particles is inevitable, resulting in a decrease in light extraction efficiency
The diffusion plate not only requires uniformity, but also the light transmittance of the diffusion plate is crucial to the brightness of the liquid crystal display; secondly, the diffusion plate completely depends on the microstructure of its own surface, and there is no light absorption by traditional diffusion particles. However, the light output efficiency and light output uniformity have not achieved good results; the three-diffusion plate is a hot research topic at present, but there are not many research results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like figure 2 Shown is a schematic diagram of a preferred embodiment 1 of a diffuser plate of the present invention. Wherein the ultraviolet absorber 7 and the light diffusing particles 31 in the four-layer composite diffuser plate of the present invention are respectively doped in the first diffusing particle layer 9a and the second diffusing particle layer 9b. The weight percentages of the diffusion particle weight and the ultraviolet absorber doping weight in the diffusion particle layer 9a and the diffusion particle layer 9b in the current diffusion particle layer are 0.01% and 0.004% respectively. The first diffusion particle layer 9a is located on the transparent resin substrate layer 8a, the transparent resin substrate layer 8b is located on the first diffusion particle layer 9a, and the second diffusion particle layer 9b is located on the transparent resin substrate layer 8b. The thicknesses of the first diffusion particle layer 9 a and the second diffusion pa...

Embodiment 2

[0052] like image 3 As shown, it is a schematic diagram of a preferred implementation 2 of the diffuser plate of the present invention. Wherein the ultraviolet absorber 7 and the light diffusing particles 31 in the four-layer composite diffuser plate of the present invention are respectively doped in the first diffusing particle layer 9a and the second diffusing particle layer 9b. The weight percentages of the diffusion particle weight and the ultraviolet absorber doping weight in the diffusion particle layer 9a and the diffusion particle layer 9b in the current diffusion particle layer are 0.01% and 0.004% respectively. The transparent resin substrate layer 8a is located on the first diffusion particle layer 9a, the transparent resin substrate layer 8b is located on the first diffusion particle layer 9a, and the second diffusion particle layer 9b is located on the transparent resin substrate layer 8b. The thicknesses of the first diffusion particle layer 9 a and the second ...

Embodiment 3

[0055] like Figure 4 Shown is a schematic diagram of a preferred embodiment 3 of a diffuser plate of the present invention. Wherein the ultraviolet absorber 7 and the light diffusing particles 31 in the five-layer composite diffuser plate of the present invention are respectively doped in the first diffusing particle layer 9a, the second diffusing particle layer 9b and the third diffusing particle layer 9c. Wherein the diffusion particle weight of the diffusion particle layer 9a and the doping weight of the ultraviolet absorber account for the weight percentage of the diffusion particle layer of the current layer and are respectively 1% and 0.004%; the diffusion particle weight and the doping weight of the ultraviolet absorber of the diffusion particle layer 9b account for The weight percentages of the diffusion particle layer are 0.1% and 0.004% respectively; the weight percentages of the diffusion particle layer 9c and the doping weight of ultraviolet absorber in the diffus...

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Abstract

The invention discloses a multi-layer variable combined diffusion plate, belonging to the field of diffusion plates and having a multi-layer structure in which particle diffusion layers and transparent resin substrate layers are disposed alternately. The diffusion plate is mainly characterized in that: at least two particle diffusion layers are disposed in the multi-layer variable combined diffusion plate; and the two diffusion particle layers comprise substrates which are made from transparent materials, diffusion particles and ultraviolet absorbents uniformly. At least one outer surface of the diffusion plate disclosed by the invention is provided with a micro-structure, so that the luminous efficiency and the diffusion efficiency are improved.

Description

technical field [0001] The multi-layer variable combination diffuser plate of the present invention is a multi-layer structure in which diffusion particle layers and transparent resin substrate layers are alternately combined, and is a diffuser plate applied to a direct-lit backlight module. The diffusion plate of the present invention presents a multi-layer structure in which the diffusion particle layer and the transparent resin substrate layer are alternately combined. The layer uniformly comprises a substrate made of transparent material with diffusing particles and UV absorbers. At least one outer surface of the diffusion plate of the present invention has a microstructure to improve light efficiency and diffusion efficiency. Background technique [0002] In a liquid crystal display, the liquid crystal panel itself does not have a light-emitting function, and a backlight module needs to be arranged under the liquid crystal panel to provide a light source to realize the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02B32B27/14
Inventor 庄俭吴大鸣张亚军何晓祥郑秀婷
Owner BEIJING UNIV OF CHEM TECH
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