Light diffusion plate of direct type backlight module and manufacturing method of light diffusion plate

A light diffusion plate and backlight module technology, which is applied in optics, optical components, instruments, etc., can solve the problems that the number of refractions cannot be exported, the astigmatism efficiency of the light diffusion plate is low, and the flexibility of the light diffusion plate is poor, so as to protect the material Avoid, enhance the light scattering efficiency, increase the effect of flexibility

Inactive Publication Date: 2021-12-21
江苏东福光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But the light diffusion plate of the current direct type backlight module and its manufacturing method, the flexibility of the light diffusion plate is poor, and the astigmatism efficiency of the light diffusion plate is low, and the number of times of light refraction is large so that the light cannot be fully exported. , mainly to control the layout of the light and its composition. The efficiency of using the light source to scatter the luminous flux is low, so that the light cannot be fully poured out to improve the light scatter efficiency, and the diffusion plate is easy to damage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A method of manufacturing a light diffusion plate of a direct-type backlight module, the specific method of manufacturing is as follows:

[0024] A. Pour 90% of optical-grade PC particles or optical-grade PMMA particles and 5.8% of titanium dioxide into the material mixing drum for stirring, and heat to 220°C-250°C during the stirring process, and keep the temperature in the material mixing drum for 30- 60 minutes until the material is completely melted;

[0025] B. When the material in the material mixing drum is completely melted, add 1% of the silicone particles and 0.3% of the binder for continuous stirring, keep the temperature heated to 250°C-320°C, and keep the temperature for 30-60 minutes;

[0026] C. When the material in the material stirring is completely melted, add 0.4% styrene copolymer and 1% ink for stirring, and at the same time reduce the temperature in the material mixing drum to 200°C-250°C, and keep stirring for 30-60 minutes;

[0027...

Embodiment 2

[0030] Embodiment 2: A method of manufacturing a light diffusion plate of a direct-type backlight module, the specific method of manufacturing is as follows:

[0031] A. Pour 90.5% of optical-grade PC particles or optical-grade PMMA particles and 3.9% of titanium dioxide into the material mixing drum for stirring, and heat to 220°C-250°C during the stirring process, and keep the temperature in the material mixing drum for 30- 60 minutes until the material is completely melted;

[0032] B. When the material in the material mixing drum is completely melted, add 1.5% of silicone particles and 0.35% of binder and continue to stir, keep the temperature heated to 250°C-320°C, and keep the temperature and keep stirring for 30-60 minutes;

[0033] C. When the material in the material stirring is completely melted, add 0.6% styrene copolymer and 1.35% ink for stirring, and at the same time reduce the temperature in the material mixing drum to 200°C-250°C, and continue stirring for 30-6...

Embodiment 3

[0037] Embodiment 3: A method of manufacturing a light diffusion plate of a direct-type backlight module, the specific method of manufacturing is as follows:

[0038] A. Pour 91% of optical grade PC particles or optical grade PMMA particles and 2% of titanium dioxide into the material mixing drum for stirring, and heat it to 220°C-250°C during the stirring process, keep the temperature in the material mixing drum and heat for 30- 60 minutes until the material is completely melted;

[0039] B. When the material in the material mixing drum is completely melted, add 2% of silicone particles and 0.3%-0.6% of binder to continue stirring, keep the temperature heated to 250°C-320°C, and keep stirring for 30-60 minutes ;

[0040] C. When the material in the material stirring is completely melted, add 0.8% styrene copolymer and 1.5% ink for stirring, and at the same time reduce the temperature in the material mixing drum to 200°C-250°C, and continue stirring for 30-60 minutes;

[004...

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PUM

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Abstract

The invention relates to the technical field of light diffusion plates, in particular to a light diffusion plate of a direct type backlight module. The light diffusion plate includes 90%-91% of optical-grade PC particles or optical-grade PMMA particles, 1%-1.5% of printing ink, 1%-2% of organic silicon particles, 0.3%-0.6% of an adhesive, 0.4%-0.8% of a styrene copolymer, 5.8%-2% of titanium dioxide, 0.5%-0.7% of an electrostatic agent, 0.5%-0.7% of a flame retardant and 0.5%-0.7% of an ultraviolet light absorber. The manufactured light diffusion plate is in a slope shape, and the adhesive is one of polyurethane, polystyrene and ethylene. The flexibility of the light diffusion plate can be improved, the light diffusion effect of the light diffusion plate is better, light refraction can be reduced to improve the diffusion brightness of the light diffusion plate, mainly, the light layout and components are controlled more efficiently, the light is scattered through a light source, light is fully poured out, the light diffusion efficiency is improved, and a diffusion plate protection material is added to avoid some chemical damages.

Description

technical field [0001] The invention relates to the technical field of light diffusion plates, in particular to a light diffusion plate of a direct-lit backlight module and a manufacturing method thereof. Background technique [0002] The light diffusion plate is a physical phenomenon of refraction, reflection and scattering that occurs when light encounters two media with different refractive indices on the way, through chemical or physical means, through PMMA, PC, PS, PP or hips, etc. Inorganic or organic light diffusing agents are added to the base of the substrate, or the light is artificially adjusted through the array arrangement of the micro-feature structure on the surface of the substrate, so that the light can be refracted, reflected, and scattered in different directions, thereby changing the traveling route of the light and realizing the incident The light is fully dispersed to produce the effect of optical diffusion. There are three types of light diffusion plat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02
CPCG02B5/0242G02B5/0268
Inventor 武玄庆杜明超
Owner 江苏东福光电科技有限公司
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