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Negative liquid crystal composition and display device comprising the liquid crystal composition

A technology of liquid crystal composition and negative liquid crystal, which is applied in the direction of liquid crystal materials, instruments, nonlinear optics, etc., can solve the problems of excessive current of liquid crystal display, the amount of crown ether used in electrostatic discharge, and poor display, so as to reduce image afterimage, High-definition highlights, suitable optical anisotropy effect

Active Publication Date: 2018-01-26
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Generally speaking, the electrostatic discharge time depends on the amount of crown ether added. It is well known to those skilled in the art that if the amount of crown ether used in the liquid crystal composition is too large, the current of the liquid crystal display will be too large and the display will be poor.
[0012] Therefore, there is an urgent need for a negative liquid crystal composition comprising an antistatic agent to solve the problem of electrostatic discharge of VA-type liquid crystal displays and the excessive use of crown ether, resulting in excessive current and poor display of liquid crystal displays.

Method used

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  • Negative liquid crystal composition and display device comprising the liquid crystal composition
  • Negative liquid crystal composition and display device comprising the liquid crystal composition
  • Negative liquid crystal composition and display device comprising the liquid crystal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Prepare liquid crystal composition LC-1, as shown in Table 2:

[0081] Table 2LC-1 liquid crystal composition formula

[0082] Component code

[0083] The physical parameters of the liquid crystal composition LC-1 are: Δn: 0.09, Δε: -4.0, Cp: 100°C.

[0084] In the liquid crystal composition LC-1, different contents of crown ethers of formula IV-1 with the following structure are added:

[0085]

[0086] The current power consumption and static electricity disappearing time of the liquid crystal composition added with the crown ether of formula IV-1 were tested, as shown in Table 3:

[0087] Table 3 Current consumption and static electricity disappearing schedule

[0088] Crown ether content / ppm

[0089] Compounds of formula IV-1 and formula V

[0090]

[0091] Form a mixture according to the ratio of 1:1, add it to the liquid crystal composition LC-1, and test the current power consumption and static disappearance time of the liquid crystal...

Embodiment 2

[0096] Prepare liquid crystal composition LC-2, as shown in Table 5:

[0097] Table 5LC-2 liquid crystal composition formula

[0098] Component code

[0099] The physical parameters of the liquid crystal composition LC-2 are: Δn: 0.08, Δε: -8.5, Cp: 100°C.

[0100] In the liquid crystal composition LC-2, the crown ether of formula IV-3 with the following structure is added in different contents:

[0101]

[0102] The current power consumption and static electricity disappearing time of the liquid crystal composition added with the crown ether of formula IV-3 are tested, as shown in Table 6:

[0103] Table 6 Current consumption and static electricity disappearing schedule

[0104] Crown ether content / ppm

[0105] Compounds of formula IV-3 and formula V

[0106]

[0107] Form a mixture according to the ratio of 1:1, add it to the liquid crystal composition LC-2, and test the current power consumption and static disappearance time of the liquid crysta...

Embodiment 3

[0112] Prepare liquid crystal composition LC-3, as shown in Table 8:

[0113] Table 8 LC-3 liquid crystal composition formula

[0114] Component code

[0115] The physical parameters of the liquid crystal composition LC-3 are: Δn: 0.055, Δε: -3, Cp: 104°C.

[0116] In the liquid crystal composition LC-3, the crown ether of formula IV-6 with the following structure is added in different contents:

[0117]

[0118] The current power consumption and static electricity disappearing time of the liquid crystal composition added with the crown ether of formula IV-6 were tested, as shown in Table 9:

[0119]Table 9 Current Consumption and Static Disappearance Schedule

[0120] Crown ether content / ppm

[0121] Compounds of formula IV-6 and formula V

[0122]

[0123] Form a mixture according to the ratio of 1:1, add it to the liquid crystal composition LC-3, and test the current power consumption and static disappearance time of the liquid crystal compositi...

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Abstract

The invention provides a negative liquid crystal composition comprising: at least one compound of general formula I as a first component; at least one compound of general formula II as a second component, and 1- 2000ppm of antistatic agent, said antistatic agent comprising at least one crown ether compound and a compound of formula V. The negative liquid crystal composition of the present invention can effectively reduce current power consumption, reduce electrostatic discharge time, and greatly reduce the risk of image sticking, uneven image display and other poor display problems. The present invention also provides a liquid crystal display comprising the negative liquid crystal composition of the present invention.

Description

technical field [0001] The invention relates to a liquid crystal composition, in particular to a negative liquid crystal composition containing an antistatic agent and its application in liquid crystal display devices. Background technique [0002] Liquid crystal display elements can be used in various home appliances represented by clocks and electronic calculators, measuring equipment, automotive panels, word processors, computers, printers, televisions, and the like. As a night scene display method, among the representative methods, PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (supertwisted nematic, super twisted nematic), ECB (electrically controlled birefringence) can be cited. , electronically controlled birefringence), OCB (optically compensated bend, optically compensated bending), IPS (in-plane switching, coplanar transformation), VA (vertical alignment, vertical alignment), CSH (color super homeotropic, color super vertical surface) an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44C09K19/46G02F1/1333
Inventor 陈晶晶宋晓龙韩文明李薇毛良良
Owner JIANGSU HECHENG DISPLAY TECH CO LTD
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