Liquid crystal composition containing dibenzo derivative and liquid crystal display device

A technology of liquid crystal compositions and derivatives, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of limited improvement in transmittance and response speed, and achieve short response time, good transmittance, and fast response. effect of speed

Pending Publication Date: 2021-12-28
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, the above-mentioned liquid crystal compositions have limited improvement in transmittance and response speed, and it is expected to develop a liquid crystal composition with better transmittance, faster response speed and better contrast.

Method used

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  • Liquid crystal composition containing dibenzo derivative and liquid crystal display device
  • Liquid crystal composition containing dibenzo derivative and liquid crystal display device
  • Liquid crystal composition containing dibenzo derivative and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0207] The liquid crystal composition of Example 1 was formulated according to the compounds listed in Table 3 and their weight percentages, and filled between the two substrates of the liquid crystal display for performance testing.

[0208] Formulation and performance parameter test result of table 3 liquid crystal composition

[0209]

[0210]

Embodiment 2

[0212] The liquid crystal composition of Example 2 was prepared according to the compounds listed in Table 4 and their weight percentages, and filled between the two substrates of the liquid crystal display for performance testing.

[0213] Formulation and performance parameter test results of the liquid crystal composition of table 4

[0214]

Embodiment 3

[0216] The liquid crystal composition of Example 3 was prepared according to the compounds listed in Table 5 and their weight percentages, and filled between the two substrates of the liquid crystal display for performance testing.

[0217] Formulation and performance parameter test result of table 5 liquid crystal composition

[0218]

[0219]

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Abstract

The invention provides a liquid crystal composition containing a dibenzo derivative and a liquid crystal display device. The liquid crystal composition comprises at least one compound as shown in a general formula I and at least one compound as shown in a general formula A-1. Compared with the prior art, the liquid crystal composition disclosed by the invention has the advantages that under the conditions of maintaining proper optical anisotropy, proper clearing point, proper dielectric anisotropy and proper low-temperature storage time, the liquid crystal composition has larger vertical dielectric, larger ratio of the vertical dielectric to the dielectric, larger elastic constant, better penetration rate and shorter response time, so that under a proper temperature application range and proper low-temperature storage stability, the liquid crystal display device containing the liquid crystal composition has better transmittance, better contrast ratio and higher response speed, and has higher application value in liquid crystal displays in TN, IPS or FFS display modes.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition containing dibenzo derivatives and a liquid crystal display device containing the liquid crystal composition. Background technique [0002] Liquid crystal material is a mixture of organic rod-shaped small molecular compounds that have both fluidity of liquid and anisotropy of crystal at a certain temperature. Liquid crystal display devices use the optical anisotropy and dielectric anisotropy of liquid crystal materials to work, and have been widely used at present. Liquid crystal display elements are divided into: PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (super twisted nematic, super twisted nematic), DS (dynamic scattering, dynamic scattering) based on the operation mode of liquid crystal molecules ), FLC (ferroelectric liquid crystal, FLC), GH (guest-host, guest-host), ECB (electrically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C09K19/46
CPCC09K19/44C09K19/46
Inventor 潘帝可贺笛赵飞丁文全徐海彬姚利芳
Owner JIANGSU HECHENG DISPLAY TECHCO
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