The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2018
Filed:
Mar. 27, 2014
Dic Corporation, Tokyo, JP;
Shinichi Hirata, Kita-adachi-gun, JP;
Hyobok Cha, Kita-adachi-gun, JP;
Naomi Hatano, Kita-adachi-gun, JP;
Tomoaki Hara, Kita-adachi-gun, JP;
Yasuo Umezu, Kita-adachi-gun, JP;
DIC CORPORATION, Tokyo, JP;
Abstract
There is provided a liquid crystal composition having the following properties without reductions in refractive index anisotropy (Δn) and nematic phase-isotropic liquid phase transition temperature (T): sufficiently small viscosity (η), sufficiently small rotational viscosity (γ1), a large elastic constant (K), and negative dielectric anisotropy (Δε) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type in which such a liquid crystal composition is used and which has a high response speed and excellent display quality with defective display being eliminated or reduced. The liquid crystal display device using the liquid crystal composition of the present invention is useful as an active-matrix liquid crystal display device and can be used in liquid crystal display devices of, for instance, a VA mode and PSVA mode.