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A light-diffusing film for display and its preparation method

A technology of light diffusion film and diffusion film, which is applied in chemical instruments and methods, optics, luminescent materials, etc., can solve the problems that quantum dots have not been reported, and achieve stable fluorescence of photoluminescence phenomenon, obvious shielding effect, preparation method simple effect

Active Publication Date: 2017-04-26
NANJING BREADY ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the research at home and abroad focuses on the preparation of organic-inorganic hybrid materials, but there has been no report on the study of quantum dots immobilized on the surface of microspheres as light diffusing agents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 0.04 mol of zinc acetate and 0.04 mol of vinyltrimethoxysilane together into the reaction kettle and stir for 1 h for later use. Then add 0.04mol vinyltrimethoxysilane and 1.5mol distilled water into another reaction kettle and stir, adjust the pH to 5.5 with 0.01M dilute hydrochloric acid, react at room temperature for 4 hours, and then adjust the pH of the above reaction solution with 0.01M ammonia water 8.0, continue to react at room temperature for 4 hours, then add the spare mixed solution, and add 0.06mol hexamethylenetetramine to the above reaction solution, raise the temperature to 75°C, continue to stir and react for 4 hours, stand and filter, and use anhydrous Wash with ethanol until neutral, and then bake in an oven at 60°C for 6 hours to obtain micron-sized ZnO-Qds@polysiloxane core-shell light-diffusing microspheres.

[0020] Take 5 g of the prepared hybrid microspheres, 45 g of urethane acrylate, 25 g of triethylene glycol diacrylate, and 0.3 g of 1-hy...

Embodiment 2

[0022] Add 0.04 mol of zinc acetate and 0.12 mol of γ-methacryloxypropyltrimethoxysilane into the reaction kettle and stir for 1 hour for later use. Then add 0.04mol γ-methacryloxypropyltrimethoxysilane and 1.5mol distilled water into another reaction kettle and stir, adjust the pH to 5.5 with 0.01M dilute hydrochloric acid, react at room temperature for 4 hours, and then use 0.01 M ammonia water to adjust the pH of the above reaction solution to 8.0, continue the reaction at room temperature for 4 hours, then add the spare mixed solution, and add 0.06mol hexamethylenetetramine to the above reaction solution, raise the temperature to 75 ° C, and continue to stir the reaction for 4 hours, Stand and filter, wash with absolute ethanol until neutral, and then bake in an oven at 60°C for 6 hours to obtain micron-sized ZnO-Qds@polysiloxane core-shell light-diffusing microspheres.

[0023]Take the prepared hybrid microsphere 5g, polyurethane acrylate 45g, triethylene glycol diacrylat...

Embodiment 3

[0025] Add 0.06 mol of zinc acetate and 0.04 mol of vinyl tris(β-methoxyethoxy)silane together into the reaction kettle and stir for 1 h for later use. Then add 0.04mol vinyl tris(β-methoxyethoxy)silane and 1.5mol distilled water into another reaction kettle and stir, adjust the pH to 5.5 with 0.01M dilute hydrochloric acid, react at room temperature for 4h, and then use Adjust the pH of the above reaction solution to 8.0 with 0.01M ammonia water, continue to react at room temperature for 4 hours, then add the spare mixed solution, and add 0.06mol hexamethylenetetramine to the above reaction solution, raise the temperature to 80°C, and continue to stir and react for 4 hours , stand and filter, wash with absolute ethanol until neutral, and then bake in an oven at 60°C for 6 hours to obtain micron-sized ZnO-Qds@polysiloxane core-shell light-diffusing microspheres.

[0026] Take 5g of the prepared hybrid microspheres, 45g of polyacrylate, 25g of triethylene glycol diacrylate and ...

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Abstract

The invention relates to a light diffusion membrane for display and a preparation method thereof. The light diffusion membrane is obtained by scattering a light diffusant of a core-shell structure in acrylate resin and carrying out ultraviolet light polymerization. Cores of the light diffusant are polysiloxane microballoons, shells of the light diffusant are made of quantum dot hybrid materials of organopolysiloxane zinc oxide, and the micromorphology of the light diffusant is of the inner layer and outer layer core-shell microballoon structure. The partical size of the microballoons ranges form 5mum to 8mum, the thickness of shell layers ranges from 100nm to 400nm, the light diffusant has the obvious photoluminescence phenomenon and presents yellow green fluorescence under an 365nm ultraviolet lamp, and a wave band near the microballoons has adjustability. The light diffusion membrane prepared through the method has an excellent light diffusion effect, the photoluminescence character is also presented in the membrane, and the light diffusion membrane can be used as a novel light diffusion membrane in a liquid crystal display backlight module. The light diffusion membrane is good in mechanical property and ageing-resistant performance and low in cost; the preparation method of the light diffusion membrane is simple, production is easy to expand, and the preparation process is friendly to the environment.

Description

technical field [0001] The invention relates to a light diffusion film for display and a preparation method thereof, which belongs to the technical field of functional materials and can be widely used in the preparation of multifunctional optical display devices. Background technique [0002] Liquid crystal displays (LCDs) are widely used in various display devices, such as LCD TVs, monitors, mobile phones, computers, and the like. With the development of people's living needs, the requirements for LCD are becoming more and more targeted. At present, the research and development of LCDs at home and abroad are developing in the direction of thinness, large display interface, and stable display screen. In the LCD structure, the functional design of the light diffusion film in the backlight module is particularly important. The position where the diffusion film is located is usually above the light guide plate. After the light source passes through the light guide plate, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02B1/04C09K11/54C08J7/04C09D175/14C09D7/12C09D4/02C09D4/06C09D163/10
CPCC08J7/04C09D4/00C09D4/06C09D7/69C09D163/10C09D175/14C09K11/54G02B1/04G02B5/0242G02B5/0268
Inventor 周钰明胡金刚何曼卜小海张牧阳
Owner NANJING BREADY ELECTRONICS CO LTD
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