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. 29, 2003
Filed:
Nov. 06, 2000
Kazuhiro Nukiyama, Kawasaki, JP;
Koichi Katagawa, Kawasaki, JP;
Fujitsu Display Technologies Corporation, Kawasaki, JP;
Abstract
An object of the invention is to provide a method of driving a liquid crystal display in which optimum pre-writing can be performed on a first line during a vertical blanking line based on a data enable signal from a system. In a method of driving a liquid crystal display for controlling timing for outputting grayscale data to a predetermined pixel based on a data enable signal Enab, a period of the data enable signal is measured as a horizontal period (steps S through S ); a virtual enable signal is generated during a vertical blanking period based on the horizontal period (steps S through S ); the sum of the data enable signal and virtual enable signal is held as a vertical period (step S ); and pre-writing of a predetermined grayscale data is performed at least in a pixel at a display starting line at a point in time that precedes the vertical period by an amount which is an integral multiple of the horizontal period (steps S through S ).