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:
Apr. 29, 2014
Filed:
Jan. 16, 2009
Wen-chen Fang, Taipei, TW;
Chun-chin Tseng, Taipei, TW;
Wen-zhe Lin, Taipei, TW;
Pei-chi Tsai, Taipei, TW;
Wen-Chen Fang, Taipei, TW;
Chun-Chin Tseng, Taipei, TW;
Wen-Zhe Lin, Taipei, TW;
Pei-Chi Tsai, Taipei, TW;
Hannstar Display Corporation, Taipei, TW;
Abstract
The present invention discloses a liquid crystal display device and a control method thereof. In the present invention, a clock controller detects an external clock signal and outputs a switching signal according to the external clock signal. According the information carried by the switching signal, a shutoff switching circuit controls a gamma voltage generator and a common voltage circuit to output voltages making a pixel electrode and a common electrode have a zero voltage difference. Thereby, the pixel charges are completely released after system shutoff, and the shutoff retained images are instantly eliminated.