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:
Jan. 15, 2008
Filed:
Aug. 14, 2003
Chang-hwe Choi, Suwon, KR;
Chang-Hwe Choi, Suwon, KR;
Samsung Electronics Co., Ltd, Gyeonggi-do, KR;
Abstract
A method and apparatus is described that may be capable of improving picture quality of a TFT-LCD device, to prevent occurrence of a stripe phenomenon caused by an offset, i.e., differences among the voltages output from a plurality of amplifiers in a TFT-LCD source driver circuit. The method and apparatus may eliminate differences among voltages output from a plurality of amplifiers in a circuit such as a TFT-LCD source driver circuit. In the method, a panel driving voltage may be applied to a given pixel of a liquid crystal panel in response to a clock signal. The polarity of the applied panel driving voltage may be changed in response to a polarity control signal, and a switch control signal may be generated based on the polarity control signal. The switch control signal may be applied to switch first and second input ports of each of the plurality of amplifiers.
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