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Liquid-crystal composition and liquid-crystal display element

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems of inability to take into account the response speed and reliability, and can not be said to be able to fully meet the requirements, etc., and achieve fast response speed and high VHR. Effect

Pending Publication Date: 2020-07-03
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, any liquid crystal composition cannot balance the response speed and reliability required especially for large liquid crystal display elements.
[0007] In addition, in Patent Document 2, it is disclosed that the response speed of the homeotropic liquid crystal cell can be improved by using a liquid crystal material having a large index (FoM) represented by the following mathematical formula, but it cannot be said that the requirement can be fully satisfied.

Method used

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  • Liquid-crystal composition and liquid-crystal display element
  • Liquid-crystal composition and liquid-crystal display element
  • Liquid-crystal composition and liquid-crystal display element

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Embodiment

[0217] The following examples are given to further describe the present invention in detail, but the present invention is not limited to these examples. In addition, "%" in the composition of a following Example and a comparative example means "mass %". The following abbreviations are used for describing compounds in Examples.

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Abstract

The problem to be solved by the present invention is to provide: a liquid-crystal composition which has a negative value of dielectric anisotropy (Delta epsilon), a high TNI, a high Delta n, and a lowgamma 1; a VA-, FFS-, or IPS-mode liquid-crystal display element which includes the liquid-crystal composition and which has a high response speed and a high VHR and has no or few display failures; and a PSA element obtained using a polymerizable compound. The liquid-crystal composition of the present invention contains a compound of general formula (i), the abovementioned problem being solved therewith.

Description

technical field [0001] The present invention relates to a liquid crystal composition and a liquid crystal display element using the same. Background technique [0002] Liquid crystal display elements have developed from being used in clocks and electronic calculators to various household electrical equipment, measuring instruments, automotive panels, word processors, electronic notebooks, printers, computers, televisions, etc. As liquid crystal display methods, the representative methods include TN (twisted nematic) type, STN (super twisted nematic) type, DS (dynamic light scattering) type, GH (guest-host) type, IPS (in-plane switching) type, OCB (Optically Compensated Birefringence) type, ECB (Voltage Controlled Birefringence) type, VA (Vertical Alignment) type, CSH (Color Super Vertical) type, or FLC (Ferroelectric Liquid Crystal) and the like. In addition, examples of the driving method include static driving, multiplex driving, simple matrix method, active matrix (AM) m...

Claims

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Application Information

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IPC IPC(8): C09K19/34C09K19/12C09K19/14C09K19/16C09K19/18C09K19/20C09K19/30C09K19/38C09K19/54G02F1/13
CPCC09K19/12C09K19/14C09K19/16C09K19/18C09K19/20C09K19/30C09K19/34C09K19/38C09K19/54G02F1/13C09K19/3405C09K2019/3009C09K2019/301C09K2019/123
Inventor 橘内崇幡野直美
Owner DIC CORP
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