US 9,994,770 B2 · Liquid crystal compound having tercyclohexyl, liquid crystal composition and liquid crystal display device

Abstract

Provided is a liquid crystal compound satisfying at least one of physical properties such as high stability to heat and light, a high clearing point (or high maximum temperature), low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound, represented by formula (1): wherein, in formula (1), R1 is alkoxy having 1 to 9 carbons or the like; R2 is alkenyl having 2 to 10 carbons; Z1 and Z2 are independently a single bond, —CH2CH2—, —CH═CH— or the like; and a and b are independently 0 or 1.

Claims14

Dependent claims

A compound, represented by formula (1):

wherein, in formula (1),
R1 is a group in which at least one —CH2— of alkyl having 1 to 10 carbons is replaced by —O—, and in the group, at least one —CH2CH2— may be replaced by —CH═CH—, and at least one hydrogen may be replaced by fluorine;
R2 is alkenyl having 2 to 10 carbons, and in the group, at least one hydrogen bonding with carbon forming a double bond may be replaced by fluorine or chlorine;
Z1 and Z2 are independently a single bond, —CH2CH2—, —CH═CH—, —OCH2—, —CH2O—, —C≡C—, —COO—, —OCO—, —CF2O—, —OCF2—, —CF2CF2—, —CF═CF—, —(CH2)4—, —CH═CH—(CH2)2— or —(CH2)2—CH═CH—;
and
a and b are independently 0 or 1.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/453,627Filed 8 Mar 2017

Priority

JP 2016-04683210 Mar 2016

Published

US 2017/0260453 A114 Sep 2017

Granted

12 Jun 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

C09K 19/3402
Containing at least one heterocyclic ring: having oxygen as hetero atom
C09K 19/3001
Containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings: cyclohexane rings
C09K 19/3003
Cyclohexane rings: compounds containing at least two rings in which the different rings are directly linked
C09K 19/3048
Cyclohexane rings: in which at least two rings are linked by a carbon chain containing carbon to carbon double bonds

Liquid crystal compound having tercyclohexyl, liquid crystal composition and liquid crystal display device

Life of this patent

Liquid crystal compound having tercyclohexyl, liquid crystal composition and liquid crystal display device

Life of this patent

Abstract

Claims14