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. 20, 2008
Filed:
Sep. 05, 2000
Sang Tae Lee, Kumi-shi, KR;
Sang Tae Lee, Kumi-shi, KR;
LG.Philips LCD Co., Ltd., Seoul, KR;
Abstract
A gamma voltage compensating apparatus and method for a liquid crystal display wherein a gamma voltage is compensated to improve a charge characteristic of a pixel. In the apparatus, a pre-charge voltage generator generates a pre-charge voltage allowing a gamma voltage to be higher than a target voltage in a certain time interval every one horizontal period. A gamma voltage generator adds the pre-charge voltage from the pre-charge voltage generating means to a predetermined reference voltage in such a manner to have a different level in accordance with a voltage level of an image signal, thereby generating a gamma voltage. Accordingly, a gamma voltage including a pre-charge voltage higher than the target gamma voltage is applied to improve a charge characteristic of the pixel, thereby preventing a charged voltage difference from being generated between the horizontal and vertical pixels.