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:
Dec. 15, 2015
Filed:
Nov. 08, 2013
Shyh-yueh Wang, Taichung, TW;
Xin-jiu Wang, Taichung, TW;
Chia-hui Chen, Taichung, TW;
Chiu-yuan Huang, Taichung, TW;
Yen-liang Chen, Taichung, TW;
Shyh-Yueh Wang, Taichung, TW;
Xin-Jiu Wang, Taichung, TW;
Chia-Hui Chen, Taichung, TW;
Chiu-Yuan Huang, Taichung, TW;
Yen-Liang Chen, Taichung, TW;
POWERTIP TECHNOLOGY CORPORATION, Taichung, TW;
Abstract
A dual-frequency bistable liquid crystal display and the liquid crystal mixture thereof includes liquid crystal cell filled with a liquid crystal mixture which contains dual-frequency liquid crystal, chiral compound, and nematic liquid crystal mixture. The liquid crystal mixture has the characteristics of both the dual-frequency liquid crystal and cholesteric liquid crystal. The dual-frequency bistable liquid crystal display is driven in a frequency modulation mode and can be switched between two optical states by taking advantage of the dielectric anisotropy of the liquid crystal, which results in a short switching time and sharp contrast between two optical states. Furthermore, the maintaining of the two optical states requires no voltage, which does not require the use of a high voltage to destabilize the helical structure of the cholesteric liquid crystal, and does not have to go through a metastable stage. Hence, power consumption and switching time are reduced.