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. 08, 2011
Filed:
Aug. 06, 2007
Hideto Fukuda, Kasugai, JP;
Shinya Udo, Kasugai, JP;
Masao Kumagai, Kasugai, JP;
Osamu Kudo, Kasugai, JP;
Hideto Fukuda, Kasugai, JP;
Shinya Udo, Kasugai, JP;
Masao Kumagai, Kasugai, JP;
Osamu Kudo, Kasugai, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
A driver IC for a display that includes a first D/A converter with a 1selection circuit that receives 1image signals and supplies a selected positive divisional voltage to a 1operational amplifier, which supplies a positive pixel voltage by amplifying the selected positive divisional voltage; a 2D/A converter with a 2selection circuit that receives 2image signals and supplies a selected negative divisional voltage to a 2operational amplifier, which supplies a negative pixel voltage by amplifying the selected negative divisional voltage; and a polarity switching switch with 1and 2switches connecting the 1and 2D/A converters respectively, the polarity switching switch being switched to supply each of output terminals corresponding to the 1and 2image signals alternately with the positive and negative pixel voltages every horizontal scan period by activating/inactivating the 1and 2switches in a complementary manner.