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:
Jul. 17, 2007
Filed:
Dec. 16, 2002
Martin J. Edwards, Crawley, GB;
John R. A. Ayres, Reigate, GB;
Martin J. Edwards, Crawley, GB;
John R. A. Ayres, Reigate, GB;
Koninklijke Philips Electronics N. V., Eindhoven, NL;
Abstract
A display device with capacitive display pixels, in which a drive scheme is used for capacitive coupling of voltages to enable reduced column voltage swings to be obtained. Each pixel has two storage capacitors. The use of two storage capacitors provides some freedom in the choice of the magnitude of the voltage swing provide on one terminal of one of the storage capacitors. The first capacitor (C) of all pixels of the display may be grounded, and only the second capacitor (C) is subjected to changes in voltage to be capacitively coupled to the display cell. This provides a flexible capacitor line drive type scheme.