Method for producing choles phase liquid crystal high-molecular optical reinforced film

A technology of cholesteric liquid crystals and liquid crystal polymers, which is applied in the field of preparation of cholesteric liquid crystal polymer light-enhancing films, and can solve the problems of cumbersome processes for cholesteric liquid crystal polymer light-enhancing films

Inactive Publication Date: 2007-08-22
UNIV OF SCI & TECH BEIJING
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a method for preparing a cholesteric liquid crystal polymer light-enhanc

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
  • Method for producing choles phase liquid crystal high-molecular optical reinforced film
  • Method for producing choles phase liquid crystal high-molecular optical reinforced film
  • Method for producing choles phase liquid crystal high-molecular optical reinforced film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The cholesteric liquid crystal polymer used is shown in FIG. 1 .

[0024] Fig. 2 is the transmission spectrum curves of the cholesteric liquid crystal polymer used in the present invention at different temperatures. It can be seen from the figure that the minimum transmittance wavelength (reflection wavelength) of the cholesteric liquid crystal polymer increases with the increase of temperature, so the pitch of the liquid crystal phase of the cholesteric liquid crystal polymer increases with the increase of temperature.

[0025] Fig. 3 is a simulation diagram of the principle of preparing a light enhancement film. The cholesteric liquid crystal polymer used is mixed with glass microspheres with a diameter of 20 microns, and then sandwiched between two layers of transparent plastic films whose inner surfaces have not been oriented. Prepared into a thin film, as shown in Figure 3(a). Then take 5Kmin -1The film is heated to 396.2K at a heating rate of 396.2K. Since the ...

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 is a cholesteric liquid crystal high molecular light intensifying film preparing method, belonging to the field of LCD light intensifying film technique. And the process: liquid crystal high molecules placed in between two transparent plastic films and shows in cholesteric phase between glass transition temperature and 280 deg.C, are made into thin film in the liquid crystal-phase temperature range in the rolling mode, heating the liquid crystal high molecular film to temperature T so that cholesteric liquid crystal molecules form plane structured molecular arrangement mode, then placing the thin film on a temperature control table with temperature T1, keeping the spatial temperature of the outer surface of the upper transparent plastic film be equal to T2, cooling so that the cholesteric liquid crystal high molecular film forms pitch gradient in the direction vertical to the surfaces of the two transparent plastic films; and the pitch gradient is frozen in the glass state of the cholesteric liquid crystal high molecules. And its advantages: the selected material system and the making process are simple and convenient, and the optical performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of light-enhancing films for liquid crystal displays, and relates to a preparation method of a cholesteric liquid crystal polymer light-enhancing film. The preparation process is simple and the optical properties are excellent. Background technique [0002] Backlight technology is one of the core technologies of TFT-LCD, accounting for 25% to 35% of the total cost of TFT-LCD (notebook computer display: about 25%; LCD TV display: 30% to 35%). The light enhancement film accounts for 30% to 40% of the cost of the backlight system. At present, people put forward higher requirements for low power consumption and long-time standby of liquid crystal displays. As we all know, the liquid crystal itself does not emit light, and needs a backlight source to support the light emission. The brightness of the liquid crystal display affects the quality of the image to a certain extent. However, the backlight system accoun...

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): G02B5/30G02F1/1335C09K19/02C09K19/00
Inventor 杨槐肖久梅赵冬宇何万里曹晖
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap