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:
Sep. 27, 2011
Filed:
Jan. 03, 2008
Kimio Anai, Fukaya, JP;
Kimio Anai, Fukaya, JP;
Toshiba Matsushita Display Technology Co. Ltd, Tokyo, JP;
Abstract
According to one embodiment of the present invention, a flat display device which makes drive voltage polarity of pixels of adjacent lines reversed polarity, while drives to reverse drive voltage polarity of the same line on a frame-by-frame basis, has common voltage generation circuit for supplying a common voltage signal to a facing electrode of the flat display device and a control circuit for generating a common voltage control signal supplied to the common voltage generation circuit. The control circuit obtains a control signal for generating common voltage whose average DC potential does not vary, by using a horizontal synchronization timing signal, a vertical synchronization timing signal, and a clock signal. In order to obtain the control signal, the device has an (fh/2) signal generation circuit, an (fv/2) signal generation circuit, an (fh×n) signal generation circuit, an multiplication circuit, a selection control circuit, and a selection circuit.