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:
Nov. 10, 2009
Filed:
Jun. 30, 2004
Yasuyuki Kudo, Fujisawa, JP;
Akihito Akai, Yokohama, JP;
Takuya Eriguchi, Yokosuka, JP;
Kazuo Okado, Kokubunji, JP;
Hiroki Aizawa, Yokohama, JP;
Yasuyuki Kudo, Fujisawa, JP;
Akihito Akai, Yokohama, JP;
Takuya Eriguchi, Yokosuka, JP;
Kazuo Okado, Kokubunji, JP;
Hiroki Aizawa, Yokohama, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A driving circuit provided by the present invention is characterized in that the driving circuit selects a gray-scale voltage in accordance with high-order bits of display data from a group of gray-scale voltages with their voltage level varying step by step from fractional time period to fractional time period, which are set in advance, and outputs the selected gray-scale voltage during a time period between the start of a scanning period and a time at which a number assigned to a fractional time period matches quantitative information contained in low-order bits of the display data. In addition, the driving circuit provided by the present invention is also characterized in that the time ratio of the first fractional time period is set at a relatively high value while the time ratios of the second and subsequent fractional time periods are each set at a relatively low value.