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Preparation method of optical diffusion film with middle hole

A technology of optical diffusion and holes, applied in the direction of diffusion elements, coatings, etc., can solve the problems of environmental practitioners' injuries, power consumption, etc., and achieve the effects of strong chemical bonds, not easy to drop powder and particles, and high light transmittance

Active Publication Date: 2012-10-17
NINGBO DXC NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solvent coating method is more cost-effective, but organic solvents still have a certain degree of harm to the environment and employees
Furthermore, the ultraviolet light cross-linking process consumes a lot of power, and the hidden dangers that ultraviolet light may cause to practitioners, such as free radicals and cancer caused by ultraviolet light, are issues worth noting

Method used

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  • Preparation method of optical diffusion film with middle hole

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] A method for preparing an optical diffusion film with mesopores. The optical diffusion film with mesopores uses high molecular polyethylene terephthalate (PET, Polyethylene-terephthalate) as the base layer 1, and adds neutral The surfactant and TEOS as an organic template, in an acidic environment, synthesized a highly regular hexagonal mesopore 2 by the sol-gel method, and put the diffusion particles 3 of the same nature, such as silicon dioxide ( SiO 2 ), and its particle size is about 15nm. After the solvent volatilization induces the self-assembly phenomenon, the diffusion particles 3 will be uniformly and regularly bound in the hexagonal holes 2, so as to achieve a high-functional diffusion film with good light transmission and high haze. Its preparation method comprises the following steps:

[0017] A. Hydroxylation of...

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Abstract

The invention discloses a preparation method of an optical diffusion film with a middle hole. The method comprises the following steps of: A, performing hydroxylation on PET (Polyethylene Terephthalate); and B, preparing a diffusion layer coating, namely preparing a water bath with the constant temperature of 40 DEG C, blending measurements of reactants such as TEOS (Tetraethyl Orthosilicate), THF (Tetrahydrofuran), H2O, HCl and diffusion particles according to the equivalent proportion of 1:30:5:0.1:3, adding the diffusion particles into 200 millimeters of THF, adding the HCl which is pre-blended by deionized water and has the equivalent concentration of 2, and dripping the TEOS, stirring for 2-5 hours, and ending the reaction to obtain a reaction product; and coating the reaction product onto hydroxylated PET in a roller coating way, and putting into a drying box of which the temperature is between 65 DEG C and 75 DEG C for standing until a solvent is fully volatilized. In the entire formation process of a middle hole material, a more environmentally-friendly polar solvent (such as THF, water and the like) can be taken as the solvent, so that material operating personnel and the entire environment are protected.

Description

(1) Technical field [0001] The invention relates to a preparation method of an optical diffusion film. (2) Background technology [0002] Liquid Crystal Display (LCD) is the most common display technology today, and will also be the mainstream display technology in the next 20-30 years. Liquid crystal is a substance between solid and liquid. It cannot emit light by itself. It must use a backlight to achieve the display function. The performance of the backlight source will directly affect the image quality of the LCD, especially the brightness of the backlight source will directly affect the brightness of the LCD surface. [0003] The LCD backlight system is mainly composed of a light source, a light guide plate, and various optical films. A good LCD backlight system must have the characteristics of high brightness, long life, and uniform light emission. At present, there are mainly three types of backlight sources: EL, CCFL, and LED. According to the location of the light...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08J7/04C08L67/02G02B5/02
Inventor 杨衷核罗培栋
Owner NINGBO DXC NEW MATERIAL TECH