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:
Mar. 01, 2005
Filed:
Oct. 01, 2002
Tomohiko Ohtani, Tachikawa, JP;
Tomomi Kamio, Hachioji, JP;
Tomohiko Ohtani, Tachikawa, JP;
Tomomi Kamio, Hachioji, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A display driving apparatus includes common electrode reverse section for reversing a potential of a common electrode of an active matrix liquid crystal display panel for each predetermined period, and gradation reference voltage setting section for setting minimum and maximum gradation reference voltages based on a contrast set value and correction voltage set value, every time the potential of the common electrode is reversed and for setting one of fluctuation center voltages of the gradation reference voltages, by which a smaller voltage is applied to liquid crystal display pixels, such that one voltage is higher than the other by a voltage corresponding to the correction voltage set value.