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Light diffusing agent and preparation method thereof, and application of light diffusing agent

A technology of light diffusing agent and diffusing powder, which is applied in the direction of semiconductor devices, electrical components, circuits, etc. It can solve the problems of large distance between lamp beads and light crosstalk, and achieve the effects of ensuring quality, preventing light crosstalk, and reducing graininess

Active Publication Date: 2022-03-18
SHENZHEN INTELA LASER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is to provide a light diffusing agent and its preparation method, as well as the application of a light diffusing agent, aiming to solve the problems of existing LED screens with large lamp bead spacing and obvious graininess, while the existing diffusion Membranes can cause technical problems with luminescence crosstalk

Method used

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  • Light diffusing agent and preparation method thereof, and application of light diffusing agent
  • Light diffusing agent and preparation method thereof, and application of light diffusing agent
  • Light diffusing agent and preparation method thereof, and application of light diffusing agent

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preparation example Construction

[0050] The preparation method of the light diffusing agent provided by the second aspect of the present application can obtain the light diffusing agent by mixing and grinding the raw material components of the formulated amount of the light diffusing agent. The preparation process is simple, and it is suitable for large-scale industrial production and application.

[0051] In some embodiments, the step of mixing and grinding includes: mixing and grinding each raw material component in the formulation amount for 10 to 60 minutes, so that each raw material component is uniformly dispersed, and the powder is further refined and homogenized. The size of the particles is improved to improve the stability of the slurry, and then vacuumed 2 to 3 times to remove the air bubbles in the slurry, so as to avoid the occurrence of air bubbles in the film layer during subsequent coating and use, and obtain a light diffusing agent.

[0052] The third aspect of the embodiment of the present ap...

Embodiment 1

[0060] A kind of light diffusing agent, its preparation step comprises:

[0061] Mix inorganic silicone resin microspheres with an average particle size of 4 μm and a refractive index of 1.49 with silica gel glue (AB glue) with a light refractive index of 1.403-1.54 in a ratio of 1:5, and grind after mixing After 10 minutes, the first light diffusing agent was obtained.

[0062] After the preparation is completed, samples are taken for ultraviolet-visible absorption spectrum testing, and the light transmittance of the above-mentioned first light-diffusing agent is measured to be 95%-98%; a viscometer is used for testing, and the mixed viscosity of the above-mentioned first light-diffusing agent is measured At 3000-4800mpa.s.

Embodiment 2

[0064] A kind of light diffusing agent, its preparation step comprises:

[0065] Mix aluminum oxide particles with an average particle size of 6 μm and a refractive index of 1.49 with UV glue with a light refractive index of 1.403-1.54 in a ratio of 2:5, and grind for 10 minutes after mixing to obtain The second light diffuser.

[0066] After the preparation is completed, samples are taken for ultraviolet-visible absorption spectrum testing, and the light transmittance of the above-mentioned second light diffusing agent is measured to be 95%-99%. The mixed viscosity is 3000-4800mpa.s when tested with a viscometer.

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Abstract

The application belongs to the field of LED technology, and in particular relates to a light diffusing agent, a preparation method thereof, and an application of the light diffusing agent. Wherein, the light diffusing agent includes raw material components in parts by weight: 1-10 parts of diffusing powder, 5-50 parts of transparent glue, and the weight ratio of the diffusing powder to the transparent glue is 1:(2-10). The light diffusing agent of this application can homogenize the light output of LED screen lamp beads, reduce the graininess of LED screen display, prevent light crosstalk between LED lamp beads, ensure the contrast of screen pixels and the quality of displayed images, and improve the user experience. visual feeling.

Description

technical field [0001] The application belongs to the field of LED technology, and in particular relates to a light diffusing agent, a preparation method thereof, and an application of the light diffusing agent. Background technique [0002] In recent years, the use of LED semiconductors has been widely used in lighting, display screens and other fields. In the LED screen, it is difficult for the light-emitting range of the LED lamp beads to cover the complete pixel area, resulting in a grainy feeling when the LED screen displays images, and the larger the distance between the LED lamp beads, the more obvious the grainy feeling. At present, a diffusion film is generally added in front of the LED to reduce the graininess of the LED screen display. However, the diffusion film will cause luminous crosstalk between adjacent LED lamp beads, thereby reducing the contrast of the pixel and affecting the quality of the displayed image. Contents of the invention [0003] The purpo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/46H01L33/56
CPCH01L33/46H01L33/56H01L2933/0025H01L2933/005
Inventor 陈飞王新星李文峰王磊
Owner SHENZHEN INTELA LASER TECH CO LTD
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