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:
May. 13, 2014
Filed:
Mar. 03, 2011
Tomohiko Nishimura, Osaka, JP;
Jin Miyazawa, Osaka, JP;
Tomohiko Nishimura, Osaka, JP;
Jin Miyazawa, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Provided is a touch sensor-equipped display device that is not susceptible to the effect of noise caused by the reversal of polarity of the common voltage of the display device, without using special circuits. The touch sensor-equipped display device includes: a touch sensor unithaving a plurality of sensor electrodes; a sensor output read circuitthat is sequentially connected to the respective sensor electrodes and that outputs a signal voltage corresponding to the electrical characteristics of the sensor electrode connected thereto; a sensor control circuitthat supplies a control signal to the sensor output read circuit; and a coordinate calculation circuitthat detects a contact position on the basis of the signal voltage. The coordinate calculation circuitincludes: an averaging circuitthat calculates an average value for the signal voltage values outputted from the sensor output read circuitover two cycles of the vertical synchronizing signal; and a contact position detection circuitthat detects the contact position on the basis of the average value.