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:
Oct. 16, 2001
Filed:
Aug. 24, 1999
Susumu Tsuchida, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A driving apparatus for a plasma addressed liquid crystal display has a reference voltage selection D/A converter (,) for applying a driving voltage to a first transparent scanning electrode group, a common anode inversion driving voltage generator (,) for applying a common anode inversion driving voltage obtained by relatively inverting a driving voltage to a second electrode scanning electrode group, and a contrast reduction adjustor (,) for simultaneously tracking a voltage on a low voltage side when a reference voltage is not inverted in the reference voltage selection D/A converter (,) and a power-supply voltage on a high-voltage side at the time of inversion, and adjusting the voltages so as to adjust reduction in contrast.