Nematic liquid crystal composition and liquid crystal display element using the same

A technology of liquid crystal composition and compound, which is applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., which can solve the problems that the voltage retention rate cannot be used for active matrix applications, slowness, etc., and achieve the effect of realizing high-speed response
CN101072847AActive Publication Date: 2007-11-14DIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DIC CORP
Publication Date
2007-11-14

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Abstract

A liquid crystal composition that is negative in dielectric constant anisotropy, being large in the absolute value thereof and has a low viscosity; and a liquid crystal display of VA mode, etc. utilizing the same. There is provided a liquid crystal composition comprising a compound of the general formula (I) and an alkenyl compound of the general formula (II). This combination of liquid crystal compounds produces a liquid crystal composition that while substantially maintaining physical properties such as refractive index anisotropy, is low in viscosity and is negative in dielectric constant anisotropy. The use of this composition produces a liquid crystal display that is capable of maintaining a high voltage retentivity up to high-temperature region and excels in reliability. This display is highly practicable as a liquid crystal display of VA mode, ECB mode, IPS mode, etc. and is especially effective in the realization of high-speed response without the need of cell gap narrowing.
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Description

technical field

[0001] The present invention relates to a nematic liquid crystal composition with a negative dielectric constant anisotropy Δε that can be used as an electro-optic liquid crystal display material and a liquid crystal display element using the composition. Background technique

[0002] Liquid crystal display devices are used in various home appliances represented by watches and desktop computers, measuring instruments, car dashboards, word processors, electronic notebooks, printers, computers, televisions, etc. Examples of liquid crystal display 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 (optical Typical methods include Compensated Birefringence) type, ECB (Voltage Controlled Birefringence) type, VA (Vertical Alignment) type, CSH (Color Super Vertical) type, or FLC (Ferroelectric Liquid Crystal). In addition, the driving method has ge...

Claims

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