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:
Jul. 19, 2005
Filed:
Feb. 08, 2002
Fumitake Yoshikawa, Tokyo, JP;
Fumitake Yoshikawa, Tokyo, JP;
NEC LCD Technologies, Ltd., , JP;
Abstract
A control circuit receives the digital input data of n-bit and controls horizontal drivers so as to provide a liquid crystal panel with voltage corresponding to the input data during a 1H cycle based on standard voltage. In addition, the control circuit creates gradation data by inverting each bit of the input data and controls the horizontal drivers so as to provide the liquid crystal panel with voltage in response to the output gradation data during the subsequent 1H cycle. In this case, gradation-γ correction voltage relation is symmetrical with respect to a point in the center between the top gradation step and the bottom gradation step.