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:
Aug. 13, 2013
Filed:
Nov. 07, 2005
Hoi-sing Kwok, Kowloon, HK;
Fei-hong Yu, Kowloon, HK;
Qing-cheng LI, Kowloon, HK;
Wing-chiu Yip, Chai Wan, HK;
Hoi-Sing Kwok, Kowloon, HK;
Fei-Hong Yu, Kowloon, HK;
Qing-Cheng Li, Kowloon, HK;
Wing-Chiu Yip, Chai Wan, HK;
The Hong Kong University of Science and Technology, Hong Kong, CN;
Abstract
This invention provides a method and apparatus for driving bistable cholesteric liquid crystal displays. The method and apparatus provided a display in which all the pixels are initially driven to the P state. Selected pixels for the display are then driven to the FC state to provide the desired message. The state of the pixels is then maintained for a viewing period prior to any resetting of the display to the P state. The switching from the P state to the FC state allows fast addressing times and lower voltages to be used in driving the display.