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:
Oct. 28, 2008
Filed:
Jul. 29, 2004
Satoshi Takahashi, Isumi, JP;
Yasuhiko Yamagishi, Mobara, JP;
Nobuyuki Koganezawa, Chiba, JP;
Hitachi Displays, Ltd., Mobara-Shi, JP;
Hitachi Display Devices, Ltd., Mobara-Shi, JP;
Abstract
A liquid crystal display device which favorably displays an image by eliminating irregularities of the γ characteristic for every manufactured liquid crystal panel. In the liquid crystal display device, when a power source is supplied thereto, a display control circuit installed therein reads out gradation voltage data corresponding to the liquid crystal panel stored in a ROM connected to the display control circuit and sets gradation voltages in a gradation voltage setting circuit installed therein. Further, upon receiving external control signals, the display control circuit sets gradation voltages in the gradation voltage setting circuit. When the set gradation voltages are inputted to a source driver section of the liquid crystal display device, the liquid crystal panel is driven and images are displayed thereby.