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

TN type liquid crystal material mixture

A technology of liquid crystal materials and mixtures, which is applied in the direction of liquid crystal materials, chemical instruments and methods, etc., can solve the problems of high cost, achieve the effects of short preparation cycle, simple operation, and reduced production costs

Inactive Publication Date: 2009-01-07
SHIJIAZHUANG GUODA INDAL
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although biphenylcyanide liquid crystals have high Δε and good electro-optical properties, studies have shown that this series of compounds are easy to introduce ionic impurities, and the cost is high

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
  • TN type liquid crystal material mixture
  • TN type liquid crystal material mixture
  • TN type liquid crystal material mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further described below in conjunction with the research and development process of the present invention.

[0036] In order to reduce the production cost of this TN type liquid crystal material, the present invention no longer uses two biphenylene cyanide monomers with higher cost,

[0037] with

[0038] Because the optical birefringence Δn of the biphenyl cyanide monomer compound is larger (about 0.180 or so), so the consumption of two ester compounds with smaller optical birefringence Δn is reduced simultaneously in the mixture of the present invention, they are

[0039]

[0040] At the same time, adding or adjusting the dosage of two ester compounds with low cost and moderate optical birefringence Δn, they are

[0041]

[0042]

[0043] After taking the above measures, the stability of the optical birefringence Δn in the liquid crystal mixture is finally maintained.

[0044] Due to the removal of the two biphenylcyanide c...

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 discloses a TN type liquid crystal material mixture which belongs to the chemical field. The mixture comprises 16 percent of propylbenzoic acid para-pentyl phenolic ester, 5 percent of pentylbiphenyl nitrile, 19 percent of para-methoxybenzoic acid para-pentyl phenolic ester, 4 percent of p-toluic acid para-pentyl phenolic ester, 10 percent of para-pentyl benzoic acid para-pentyl phenolic ester, 4 percent of para-pentyl benzoic acid para-cyano diphenol ester, 17 percent of trans-ethyl cyclohexyl acid para-cyano diphenol ester, 10 percent of p-ethylbenzoic acid para-cyano diphenol ester and 15 percent of para-pentyl benzoic acid para-cyano diphenol ester. Through the improvement of the formula of TN type liquid crystal mixed material, the biphenyl nitriles liquid crystal with higher cost in present formula is removed and is substituted by ester liquid crystal with relative low price. Under the premise that the parameters of mixed crystal all satisfy the display requirement, the production cost is lowered effectively. And the requirements of liquid crystal display manufacturers are satisfied.

Description

technical field [0001] The invention relates to a liquid crystal material for display, in particular to a mixture of TN type liquid crystal materials. Background technique [0002] Liquid crystal (Liquid Crystal) has both the fluidity of liquid and the birefringence of crystal, so it is called liquid crystal, and it is one of the basic materials of liquid crystal display (Liquid Crystal Display). In the field of display applications, the invention of the twisted liquid crystal device TN (Twisted NematicCell) makes the use of liquid crystals epoch-making. The TN mode is widely used, and can be used to make liquid crystal displays with low voltage, low power consumption, and long life. The TN liquid crystal material can be prepared by using liquid crystal monomers such as alkyl biphenylcyanide and alkyl cyanophenol ester of benzoate. For example, the formula currently used is generally cyanobiphenyl liquid crystal, and its formula is generally as follows (the number behind t...

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): C09K19/42
Inventor 马维宏
Owner SHIJIAZHUANG GUODA INDAL
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