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:
Mar. 19, 2019
Filed:
Mar. 10, 2016
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Daiji Kitagawa, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A technique is provided that enables to reduce false detection on a touch panel, without limiting the time when the display panel is driven. In a touch-panel-equipped display device, a display control unitsequentially selects gate lines, and data signals are supplied to data lines, whereby a display panelis driven. A transmission circuitsupplies a pulse signal to transmission electrode portionsat timings based on a horizontal synchronization signal. A controllerdetects a contact position on the touch panel, based on output signals output from a reception circuit that correspond to capacitances between the transmission electrode portionsand reception electrode portions. The controlleradjusts the timings of supplying the pulse signal from the transmission circuitso that the point of time when the voltage of the pulse signal changes should not coincide with the period when noise of the display device due to the supply of data signals occurs.