US 2019/0055471 A1Published application

Liquid crystal compound and liquid crystal composition

AssigneeShijiazhuang Chengzhi Yonghua Display Material Co., Ltd.

InventorsGUOLIANG YUN, KE-LUN SHU, ZHE SHAO, XING ZHANG, JIANMING CHENG, LIMEI ZHANG

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Abstract

Provided is a liquid crystal compound represented by formula I, the compound having a positive dielectric anisotropy, a great elastic constant and a good solubility. Further provided is a liquid crystal composition comprising the liquid crystal compound represented by formula I, the liquid crystal composition having a good stability against light and heat, a lower viscosity, a wider refractive index that may be achieved by the adjustment of the monomer ratio, and a higher clearing point (a very wide service temperature range), and in particular, the liquid crystal composition has a higher light transmittance, thus allowing a display device to have a higher brightness or an energy saving effect.

Claims11

Dependent claims

A liquid crystal compound represented by formula I,

wherein R1 represents an alkyl group having a carbon atom number of 1-10, a fluoro-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluoro-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluoro-substituted alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or a fluoro-substituted alkenoxy group having a carbon atom number of 3-8, and any one or more non-connected CH2 in the groups represented by R1 may be substituted with cyclopentyl, cyclobutyl, cyclopropyl or —O—;
each
independently represents
or fluorobenzene;
n represents 1, 2, 3 or 4;
and
Z0 represents CF2O, CH2O, COO or a single bond.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/990,302Filed 25 May 2018
Priority: CN 201710704668.816 Aug 2017
Published: 21 Feb 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

C09K 19/20
Containing at least two benzene rings: linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
C07C 43/225
Having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring: containing halogen
C09K 19/3066
Cyclohexane rings: in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
C09K 2019/0444
Characterised by the chemical structure of the liquid crystal components , e.g. by a specific unit: characterized by a linking chain between rings…

Family

US 10,703,974 B2Related patent
US 2019/0055471 A1This patent

From the US filing history. Foreign family members aren’t listed.

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