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:
Nov. 26, 2013
Filed:
Jul. 07, 2009
Kazuhiro Maeda, Osaka, JP;
Ichiro Shiraki, Osaka, JP;
Hiroaki Sugiyama, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A display device includes a photosensor () in a pixel region () of an active matrix substrate (). The photosensor () includes a photodetection element, reset signal wiring that supplies a reset signal RS to the photosensor (), readout signal wiring that supplies a readout signal RW to the photosensor (), and a sensor switching element for reading out the potential of the storage node to output wiring as sensor circuit output, the potential of the storage node having changed in accordance with the amount of light received by the photodetection element in a sensing period, the sensing period being from when the reset signal is supplied until when the readout signal is supplied. The potential of wiring having a parasitic capacitance with the storage node is fixed to a predetermined potential Vat least either one of immediately before the readout signal RW and immediately before the reset signal RS.