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

Liquid crystal composition and liquid crystal display device

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, chemical instruments and methods, etc., can solve problems such as pretilt angle shift

Active Publication Date: 2019-04-05
JIANGSU HECHENG DISPLAY TECHCO
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pretilt angle stability test of the existing liquid crystal composition was found that the pretilt angle would be significantly shifted under long-term voltage driving, so a new type of liquid crystal medium with improved properties is currently needed

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
  • Liquid crystal composition and liquid crystal display device
  • Liquid crystal composition and liquid crystal display device
  • Liquid crystal composition and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0137] The compounds and weight percentages listed in Table 5 were formulated with the polymerizable components of Comparative Example 1 to prepare the liquid crystal composition of Example 1, which was filled between the two substrates of the liquid crystal display for performance testing.

[0138] Table 5 liquid crystal composition formula

[0139]

[0140]

[0141] The content and components of the polymerizable component are the same as in Comparative Example 1.

[0142] The performance parameter test result of gained composition is as follows table 6:

[0143] Table 6 Performance parameter test

[0144] T S→N

Embodiment 2

[0146] The liquid crystal composition of Example 2 was formulated according to the compounds and weight percentages listed in Table 7 and Table 8, which was filled between the two substrates of the liquid crystal display for performance testing.

[0147] Table 7 Liquid crystal composition formula

[0148]

[0149]

[0150] Add the polymerizable components in Table 8 to 100 parts by weight of the liquid crystal composition:

[0151] Table 8 Polymerizable Components

[0152]

[0153] The performance parameter test result of gained composition is as follows table 9:

[0154] Table 9 performance parameter test

[0155] T S→N

Embodiment 3

[0157] The liquid crystal composition of Example 3 was formulated according to the compounds and weight percentages listed in Table 10 and Table 11, which was filled between the two substrates of the liquid crystal display for performance testing.

[0158] Table 10 liquid crystal composition formula

[0159]

[0160]

[0161] Add the polymerizable components in Table 11 to 100 parts by weight of the above-mentioned liquid crystal composition:

[0162] Table 11 Polymerizable Components

[0163]

[0164] The performance parameter test result of gained composition is as follows table 12:

[0165] Table 12 Performance parameter test

[0166] T S→N

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 liquid crystal composition. The liquid crystal composition contains at least one compound of a formula I, and at least one polymerizable compound of a formula II. The liquidcrystal composition provided by the invention has suitable optical anisotropy, suitable dielectric anisotropy, low flow viscosity, appropriate rotary viscosity, and also has good pretilt angle stability while maintaining a relatively high clearing point, wherein the pretilt angle does not basically shift under long-time voltage driving. The invention also discloses a liquid crystal display devicecontaining the liquid crystal composition. When the liquid crystal composition is applied to a PSA type liquid crystal display, the display effect is excellent. The invention also provides the liquidcrystal display device containing the liquid crystal composition.

Description

technical field [0001] The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition and a liquid crystal display device thereof. Background technique [0002] Liquid Crystal Display (LCD) has been developed rapidly due to its small size, light weight, low power consumption and excellent display quality, and is especially widely used in portable electronic information products. According to the type of display mode, it is divided into PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (supertwisted nematic, super twisted nematic), ECB (electrically controlled birefringence, electrically controlled birefringence), OCB (optically compensated bend), IPS (in-plane switching, coplanar transformation), FFS (fringe field switching, edge field switching), VA (vertical alignment, vertical alignment) and PSA (polymer stable alignment, polymer Stable alignment) and other types. [0003] Among them, the PSA mode is...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/54
CPCC09K19/542
Inventor 王立威徐海彬马文阳张文琦
Owner JIANGSU HECHENG DISPLAY TECHCO
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