Liquid crystal medium and application

A liquid crystal medium and dielectric technology, applied in liquid crystal materials, optics, instruments, etc., can solve the problems of narrow viewing angle, small wavelength dependence of birefringence liquid crystal layer, low contrast, etc., to increase mutual solubility, large dielectric Effects of electrical anisotropy, HD highlights
CN104263383AInactive Publication Date: 2015-01-07SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
Publication Date
2015-01-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a negative-dielectric anisotropic liquid crystal medium. The liquid crystal medium comprises one or several 1-50wt% of dielectric neutral compounds shown as a general formula I1 or / and a general formula I2, one or several 1-60wt% of dielectric negative compounds shown as a general formula II and one or several 1-80wt% of dielectric negative compounds shown as a general formula III. The optical anisotropy of the liquid crystal medium is in a range of 0.080-0.150. The liquid crystal medium also has relatively lower rotating viscosity, proper negative-dielectric anisotropy and larger K value and can be used for active matrix display elements comprising the liquid crystal medium, such as active matrix displays with ECB (Event Control Block), FFS (Fringe Field Switching) or IPS (Intrusion Prevention System), MVA (Multi-domain Vertical Alignment), PVA (Patterned Vertical Alignment) or HVA effects.
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Description

technical field

[0001] The present invention relates to the field of liquid crystal materials, and specifically relates to a liquid crystal medium, which is a liquid crystal medium with negative dielectric anisotropy. The present invention also relates to the use of the liquid crystal medium in active matrix display elements, such as using ECB, FFS or Applications in active matrix displays with IPS, MVA, PVA or HVA effects. Background technique

[0002] At present, TFT-LCD has been widely used in industrial fields and household consumption fields, almost completely replacing the traditional CRT display market. According to different liquid crystal display methods, liquid crystal display elements can be divided into twisted nematic (TN) mode, super twisted nematic (STN) mode, in-plane (IPS) mode, vertical alignment (VA) mode and other modes.

[0003] Most of the current liquid crystal display elements are twisted nematic (TN) mode, but it has the disadvantages of low contras...

Claims

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