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. 23, 2007
Filed:
May. 22, 2002
Cees Van Berkel, Hove, GB;
Cees Van Berkel, Hove, GB;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An integrated display and object sensing user input device is described. Display components and electric field sensing components are provided on a substrate. Also described is a sensing circuit for detecting current induced in a receiving electrode of an electric field sensing arrangement, wherein the sensing circuit employs two-phase charge accumulation. In operation, two effective circuit parts are selected alternately according to the phase of a voltage concurrently causing electric field emission, such that charge is accumulated in the same charge sense during operation of both effective circuit parts. Plural thin film electric field sensing circuits and electrodes may be arrayed to provide an object sensing array, usable as an input device.