Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Photodiffusion agent, photodiffusion film and preparation method of photodiffusion film

A technology of light diffusing agent and light diffusing film, used in optics, nonlinear optics, coatings, etc., can solve the problems of poor scratch resistance, poor adhesion, and poor leveling, and achieve good The effect of scratch resistance, good leveling, and stable light diffusion performance

Active Publication Date: 2011-06-22
BYD CO LTD
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patent application, although a scratch-resistant layer is formed on the second surface of the base material of the scratch-resistant optical film, thereby having good scratch resistance performance, however, the base material of the scratch-resistant optical film The scratch resistance of the diffusion layer formed on the second surface of the diffusion layer is still not good; acrylate monomer, at least one polyfunctional acrylate monomer and polyacrylate resin particles) have poor leveling; in addition, the organic particles in the light diffusing agent forming the diffusion layer are in the Adhesion in the diffusion layer is not good, easy to fall off during processing after forming the diffusion layer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The present invention also provides a method for preparing a light-diffusing film, wherein the method includes coating a light-diffusing agent on one surface of a substrate, and then performing UV curing, and the light-diffusing agent is the above-mentioned light diffuser.

[0025] In the method provided by the present invention, the method for coating the light diffusing agent on the substrate can adopt a method conventionally used in the art, for example, it can be roller coating, blade coating or silk screen printing. Specifically, the roller coating The methods of squeegee coating and silk screen printing are well known to those skilled in the art and will not be repeated here. The method of UV curing can also be implemented by methods known to those skilled in the art, for example, the conditions of UV curing can include: UV light intensity is 40-2000W / cm 2 , preferably 60-180W / cm 2 , the curing time is 2-200 seconds, preferably 20-150 seconds.

Embodiment 1

[0028] This embodiment is used to illustrate the light-diffusing agent, the light-diffusing film and the preparation method of the light-diffusing film provided by the present invention.

[0029] At normal temperature, the number average molecular weight of 9 parts by weight is the aliphatic urethane acrylate (produced by Sartomer Company, model is CN968), the THEICTA of 18.2 parts by weight, the HDDA of 17 parts by weight, the HDDA of 12.1 parts by weight of 1000-5000 PETA, 3 parts by weight of BAPO (produced by Ciba Specialty Chemicals) and 1.2 parts by weight of acrylic polyester modified polysiloxane (produced by BYK Chemical Company, model BYK371) are fully mixed, and 100 The average particle diameter of weight part is the polyacrylic acid particle (produced by Soken Chemical Co., Ltd., model is MTR-16H, wherein the particle diameter of the largest particle is 12 microns larger than the smallest particle) of 16 microns, stirring and dispersing evenly to obtain light diffus...

Embodiment 2

[0032] This embodiment is used to illustrate the light-diffusing agent, the light-diffusing film and the preparation method of the light-diffusing film provided by the present invention.

[0033] At normal temperature, the number average molecular weight of 10 parts by weight is 4000-10000 aliphatic urethane acrylate (produced by Ubixi Company, model is EB245), THEICTA of 13 parts by weight, HDDA of 13 parts by weight, 4 parts by weight PETA, 3.5 parts by weight of TPO (produced by Ciba Specialty Chemicals) and 1.8 parts by weight of acrylic polyester modified polysiloxane (produced by BYK Chemical Company, model BYK306) are fully mixed, and 100 The average particle diameter of weight part is the polyacrylic acid particle (produced by Soken Chemical Co., Ltd., model is MTR-26H, wherein the particle diameter of the largest particle is 10 microns larger than the smallest particle) of 26 microns, stirring and dispersing to obtain light diffusing agent .

[0034] Above-mentioned ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a photodiffusion agent which contains polyurethane-acrylate, polymerizable monomers and organic particles, wherein the number-average molecular weight of the polyurethane-acrylate is 1000-10000, the polymerizable monomers are acrylate monomers of at least two multifunctional groups, and the average particle diameter of the organic particles is 1.8-30 micrometers. The invention also provides a photodiffusion film and a preparation method thereof. The photodiffusion film comprises a substrate and a photodiffusion layer attached to one surface of the substrate, wherein thephotodiffusion agent provided by the invention cures under the action of UV (ultraviolet) to form the photodiffusion layer. The photodiffusion layer in the photodiffusion film, which is prepared fromthe photodiffusion agent provided by the invention, has favorable mar resistance, and the photodiffusion film has favorable light transmittance and photodiffusion performance.

Description

technical field [0001] The invention relates to a light-diffusing agent, a light-diffusing film formed from the light-diffusing agent, and a preparation method of the light-diffusing film. Background technique [0002] In the backlight unit of a liquid crystal display, a light-diffusing film is used to increase the brightness in the front direction without the light-diffusing pattern of the light-guiding film appearing. As such a light-diffusion film, the light-diffusion layer which consists of a light-diffusion agent is generally provided in one surface of a base material. Usually, the light diffusing agent that forms the light diffusing layer is a thermosetting coating, and is coated on the substrate by screen printing, roller coating, blade coating, etc., and is cured to obtain a light diffusing film. [0003] CN 101067665A discloses a scratch-resistant optical film, comprising: (a) a transparent substrate, the substrate has a first surface and a second surface; (b) a di...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D175/14C09D5/00G02B5/02G02F1/13357
Inventor 金启明吴波
Owner BYD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com