Liquid crystal compound having perfluoroalkyl chain, liquid crystal composition and liquid crystal display device
申请人:JNC Corporation
公开号:EP2562234A2
公开(公告)日:2013-02-27
The invention is to provide a new liquid crystal compound having a high clearing point, a good compatibility with other compounds, a small viscosity, and a high stability to heat, light and so forth; compound (1) is provided:
wherein, for example, R1 is alkyl having 4 to 10 carbons or - (CH2)2-CH=CH2, R2 is alkyl having 2 to 10 carbons, n is 8, and R1 and R2 are not allowed to be straight-chain alkyl having an identical number of carbons.
The present invention relates to an LC medium comprising and a liquid-crystalline host consisting of an LC component H) comprising one or more mesogenic or liquid-crystalline compounds and an optically active component D) and optionally a polymerisable component P) comprising one or more polymerisable compounds; and to the use of the polymerisable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment type.
The present invention relates to a liquid crystal (LC) medium comprising a compound of formula I
and
one or more compounds selected from the group of compounds of the formulae IIA, IIB, IIC and IID,
as defined in claim 1, and to the use of the LC medium for optical, electro-optical and electronic purposes, in particular in LC displays, especially in IPS, FFS, VA or PS-VA displays.