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:
Dec. 05, 2006
Filed:
Aug. 09, 2002
Tomohide Oohira, Mobara, JP;
Tomohide Oohira, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A driving method of a liquid crystal display device, even when a vertical retrace interval varies, can prevent contention between a driving signal transmitted to a driving circuit within the vertical retrace interval and a driving signal transmitted to the driving circuit within the display period of the next frame after the vertical retrace interval. The device has pixels, signal lines, and a driving circuit outputting the gray scale voltage to the signal lines. In the method, letting M be a value obtained by dividing the vertical retrace interval by a regular horizontal scanning time and rounding up a fraction after the decimal point, and letting N be an integer of 1 or more, the gray scale voltage is outputted from the driving circuit to the signal lines by a number of times between twice and (M−N) times within the vertical retrace interval.