Check patentability & draft patents in minutes with Patsnap Eureka AI!

Multi-layer polymer dispersed liquid crystal film prepared by adopting prism method and preparation method of multilayer polymer dispersed liquid crystal film

A technology for dispersing liquid crystals and polymers, which is applied in optics, instruments, nonlinear optics, etc. It can solve the problems of high driving voltage, slow response time, low contrast, etc., and achieve good absorption, fast response speed, and improved service life.

Inactive Publication Date: 2021-06-01
XIJING UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PDLC film products still have defects such as slow response time, high driving voltage, and relatively low contrast, and their application in display is limited to a certain extent. Therefore, it is necessary to further develop polymer dispersed liquid crystal films to adapt to the market. need

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-layer polymer dispersed liquid crystal film prepared by adopting prism method and preparation method of multilayer polymer dispersed liquid crystal film
  • Multi-layer polymer dispersed liquid crystal film prepared by adopting prism method and preparation method of multilayer polymer dispersed liquid crystal film
  • Multi-layer polymer dispersed liquid crystal film prepared by adopting prism method and preparation method of multilayer polymer dispersed liquid crystal film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] This embodiment provides a multi-layered polymer-dispersed liquid crystal film prepared by a prism method and a preparation method thereof. The film includes a colorless polyimide that contains nano-copper wires on one side and a composite nano-silver wire on the lower side from top to bottom. A transparent film, a liquid crystal layer containing an ultraviolet absorber and a polymer network, and a colorless polyimide transparent film containing nano-copper wire composite nano-silver wires on one side on the upper side, the preparation method thereof specifically includes the following steps:

[0036] First, preparation of colorless polyimide transparent film

[0037] Mix 20-40g of biphenyltetracarboxylic dianhydride and 2-16g of p-phenylenediamine, then add 300-600mL of dry p-chlorophenol solvent, stir at a speed of 300-1200r / min for 20-60min, and then heat up To 150-300 ℃, reflux reaction for 3-5 hours to obtain a polyimide solution; perform salivation film formation ...

Embodiment 1

[0052] This embodiment provides a multi-layered polymer-dispersed liquid crystal film prepared by a prism method and a preparation method thereof. The film includes a colorless polyimide transparent film containing nano-copper wires composite nano-silver wires on the lower side, A liquid crystal layer containing an ultraviolet absorber and a polymer network and a colorless polyimide transparent film containing nano-copper wire composite nano-silver wires on the upper side, the preparation method specifically includes the following steps:

[0053] First, preparation of colorless polyimide transparent film

[0054] Mix 20g of biphenyltetracarboxylic dianhydride and 2g of p-phenylenediamine, then add 300mL of dry p-chlorophenol solvent, stir at a speed of 300r / min for 20min, then raise the temperature to 150°C, and reflux for 3h to obtain polyamide Imine solution; perform salivation film formation on the substrate, the process controls the volatilization temperature at 10°C, remo...

Embodiment 2

[0069] This embodiment provides a multi-layered polymer-dispersed liquid crystal film prepared by a prism method and a preparation method thereof. The film includes a colorless polyimide transparent film containing nano-copper wires composite nano-silver wires on the lower side, A liquid crystal layer containing an ultraviolet absorber and a polymer network, and a colorless polyimide transparent film containing a nano-copper wire composite nano-silver wire on the upper side, the preparation method specifically includes the following steps:

[0070] First, preparation of colorless polyimide transparent film

[0071] Mix 25g of biphenyltetracarboxylic dianhydride and 4g of p-phenylenediamine, then add 350mL of dry p-chlorophenol solvent, stir at a speed of 500r / min for 30min, then raise the temperature to 180°C, and reflux for 4h to obtain polyamide Imine solution; perform salivation film formation on the substrate, the process controls the volatilization temperature at 20°C, re...

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

PropertyMeasurementUnit
Clear pointaaaaaaaaaa
Sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a multi-layer polymer dispersed liquid crystal film prepared by a prism method, which comprises a first layer of colorless polyimide transparent film, a second layer of liquid crystal layer and a third layer of colorless polyimide transparent film which are orderly arranged from top to bottom, the first layer of colorless polyimide transparent film has a nano copper wire composite nano silver wire at a lower single side, the second layer comprises an ultraviolet absorbent and a polymer network; and the third layer comprises a copper nano-wire composite silver nano-wire at an upper single side. the preparation method of the liquid crystal film comprises the following steps: oppositely placing the first layer of colorless polyimide transparent film containing the nano copper wire composite nano silver wire and the third layer of colorless polyimide transparent film containing the nano copper wire composite nano silver wire, injecting a liquid crystal mixture into the colorless polyimide transparent film, and rolling the films into a whole; and placing the film prepared in the first step under ultraviolet light, placing a prism between the ultraviolet light and the film, and obtaining the multi-layer polymer dispersed liquid crystal film through irradiation; and the liquid crystal film has excellent photoelectric properties and oxidation resistance, and is low in price, green, environment-friendly and high in transmittance.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a multilayer polymer dispersed liquid crystal film prepared by a prism method and a preparation method thereof. Background technique [0002] PDLC (polymer dispersed liquid crystal), also known as polymer dispersed liquid crystal, is a liquid crystal dispersed in an organic solid polymer matrix with micron-scale small droplets. In the microdroplets, due to the parallel orientation, the rod-like liquid crystals mix to form a bipolar structure. In the absence of an electric field, the bipolar axes are randomly distributed, that is, the optical axes of the liquid crystal micro-droplets are randomly distributed. At this time, the refractive index of the liquid crystal micro-droplet does not match that of the polymer matrix, which has a strong scattering effect on the transmitted light, and the PDLC film presents an opaque scattering state. When an electri...

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): G02F1/1334
CPCG02F1/1334
Inventor 赵玉真时祖辉王冬苗宗成贺泽民赵阳李青
Owner XIJING UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com