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Preparation method for intelligent display film with switchable visual angle

A technology of intelligent display and viewing angle, applied in instruments, optics, nonlinear optics, etc., can solve the problems of extremely high requirements for light guide plates, inability to take into account privacy, difficulty in meeting design requirements, etc.

Active Publication Date: 2017-05-10
河南瑞泰节能新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a wide viewing angle is very important for liquid crystal display, in some applications, such as withdrawing money, password input, viewing private information, etc., the wide viewing angle cannot take into account privacy, so there is an urgent need for a Liquid crystal display module with wide and narrow viewing angle to realize anti-peeping function
[0003] Currently in liquid crystal display technology, director backlight technology can switch between wide and narrow viewing angles, but this technology has extremely high requirements for the production of light guide plates and LED lighting bars, and it is difficult for general backlight manufacturers to meet the design requirements
[0004] Existing CN 205405002 U, CN 103605237 B, CN 204790254 U and other patented technologies all disclose the application of the diffuser with switchable viewing angle in liquid crystal display, but the preparation method of the diffuser with switchable viewing angle for liquid crystal display has not yet been disclosed

Method used

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  • Preparation method for intelligent display film with switchable visual angle
  • Preparation method for intelligent display film with switchable visual angle
  • Preparation method for intelligent display film with switchable visual angle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The liquid crystal and the photopolymerizable monomer are mixed according to the percentage content, the refractive index of the transparent ITO conductive film is 1.47, and the refractive index of the nematic liquid crystal SLC1717 (Shijiazhuang Yongsheng Huaqing Liquid Crystal Co., Ltd.) is 1.512, wherein the content of the liquid crystal is the total 30% by mass, photopolymerizable monomers select polyethylene glycol diacrylate with a refractive index of 1.47, 1,6-hexanediol diacrylate with a refractive index of 1.456, hydroxypropyl methacrylate with a refractive index of 1.447 A mixture of esters, the mass ratio is 3:4:3, the content of photopolymerizable monomer is 69.5%, the content of photoinitiator is 0.4%, and the glass beads with a particle size of 10 μm are selected as spacers, and the content is 0.1 %; Stir the liquid crystal, photopolymerizable monomer, photoinitiator and glass microspheres evenly at room temperature, and use the rolling process to extrude t...

Embodiment 2

[0032] The liquid crystal and the photopolymerizable monomer are mixed according to the percentage content, the refractive index of the transparent ITO conductive film is 1.47, the thickness is 50 microns, and the nematic liquid crystal SLC1717 (Shijiazhuang Yongsheng Huaqing Liquid Crystal Co., Ltd.) has a refractive index of 1.512, wherein The content of liquid crystal is 45% of the total mass, and the photopolymerizable monomers select polyethylene glycol diacrylate with a refractive index of 1.47, isobornyl methacrylate with a refractive index of 1.477, and hydroxyl methacrylate with a refractive index of 1.447. The mixture of propyl ester, the mass ratio is 3:6:1, the content of photopolymerizable monomer is 46.5%, the content of photoinitiator is 3.5%, the spacer whose particle diameter is 5 μm is selected, and its content is 5%; Liquid crystal, photopolymerizable monomer, photoinitiator and glass microspheres are stirred evenly at room temperature, and the mixed material...

Embodiment 3

[0036]The liquid crystal and the photopolymerizable monomer are mixed according to the percentage content, the refractive index of the transparent ITO conductive film is 1.47, the thickness is 50 microns, and the nematic liquid crystal SLC1717 (Shijiazhuang Yongsheng Huaqing Liquid Crystal Co., Ltd.) has a refractive index of 1.512, wherein The content of liquid crystal is 60% of the total mass, and the photopolymerizable monomers select polyethylene glycol diacrylate with a refractive index of 1.47, 1,6-hexanediol diacrylate with a refractive index of 1.456, and polyethylene glycol diacrylate with a refractive index of 1.458. A mixture of hexyl methacrylate, the mass ratio is 3:1:1, the content of photopolymerizable monomer is 38.5%, the content of photoinitiator is 1.0%, the spacer with a particle size of 2 μm is selected, and its content is 0.5 %; Stir the liquid crystal, photopolymerizable monomer, photoinitiator and glass microspheres evenly at room temperature, and use th...

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Abstract

The invention discloses a preparation method for an intelligent display film with a switchable visual angle. The preparation method comprises the following steps: mixing liquid crystal with photo-polymerizing monomer by weight percent; selecting the raw material ratio according to the index matching attribute of conductive films and a polymer dispersion liquid crystal layer and the material component characteristics, wherein the weight percentage of the liquid crystal is 30-60%, the weight percentage of the photo-polymerizing monomer is 38-70%, the weight percentage of the photo-initiator is 0.1-3.5% and the weight percentage of the spacer is 0.1-5%; uniformly stirring the liquid crystal, the photo-polymerizing monomer, the photo-initiator and the spacer at room temperature; utilizing a rolling process to extrude a mixed material into two conductive films plated with indium tin oxide, thereby forming a film; and adopting ultraviolet ray for irradiating for 5-10 minutes, thereby acquiring the intelligent display film with the switchable visual angle. Under an external electric field, a wide visual angle state and a narrow visual angle state can be switched.

Description

technical field [0001] The invention relates to a preparation method of an intelligent display film with a switchable viewing angle, which is applied to optical display fields such as smart phones and flat panel displays. Background technique [0002] Liquid crystal display technology is currently a dominant flat panel display technology. After years of development, liquid crystal display technology has continued to improve, and key indicators such as resolution, brightness, and viewing angle of liquid crystal display have been greatly improved. In particular, wide viewing angle technology has basically been popularized in liquid crystal displays. Although a wide viewing angle is very important for liquid crystal display, in some applications, such as withdrawing money, password input, viewing private information, etc., the wide viewing angle cannot take into account the privacy, so there is an urgent need for a A liquid crystal display module with a wide and narrow viewin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F222/14C08F220/28C08F220/18C08F2/48G02F1/1334
CPCG02F1/1334C08F2/48C08F283/065C08F220/1806C08F222/102C08F220/18
Inventor 贺泽民余国策宋维伟
Owner 河南瑞泰节能新技术有限公司
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