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:
May. 28, 2019
Filed:
Oct. 20, 2016
Dic Corporation, Tokyo, JP;
Tsuyoshi Sasaki, Kita-adachi-gun, JP;
Hidenari Akiyama, Kita-adachi-gun, JP;
Yasuo Umezu, Kita-adachi-gun, JP;
Kazunori Maruyama, Kita-adachi-gun, JP;
Haruki Ohishi, Kita-adachi-gun, JP;
Shinji Ogawa, Kita-adachi-gun, JP;
Yoshinori Iwashita, Kita-adachi-gun, JP;
DIC CORPORATION, Tokyo, JP;
Abstract
The liquid crystal display element uses a liquid crystal composition which has a negative value of dielectric anisotropy (Δε) and is designed to improve light transmittance adjusting an elastic constant, and a liquid crystal display including the liquid crystal display element. The liquid crystal display element uses a liquid crystal composition having a dielectric anisotropy (Δε) of less than −1.5, in which a value of Γ of the liquid crystal composition is 0.3 or less, and the value of Γ is obtained from Equation (2) using measured values of a splay elastic constant (K) and a bend elastic constant (K) of the liquid crystal composition and a twist elastic constant (K) value obtained from Equation (1) using measured values of a threshold voltage (Vth), a bend elastic constant (K), vacuum permittivity (ε), a cell gap (d), and a helical pitch (P).