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:
Dec. 13, 2016
Filed:
Nov. 21, 2013
Synaptics Display Devices Gk, Tokyo, JP;
Akihito Akai, Tokyo, JP;
Tatsuya Ishii, Tokyo, JP;
Toshikazu Tachibana, Tokyo, JP;
Toshiyuki Takani, Tokyo, JP;
Synaptics Display Devices GK, Tokyo, JP;
Abstract
The touch panel controller is connected with a touch panel having a plurality of drive electrodes, a plurality of detection electrodes, and a plurality of capacitance components formed at intersections of the drive and detection electrodes. A two-edge detection mode is adopted for the touch panel controller, in which signals arising on each detection electrode in synchronization with rising and falling edges of a drive pulse output to the drive electrodes, and alternately changing in polarity are accumulated in the integration circuit in terms of absolute value components. The integration circuit switches the connection of the integration capacitance between an input and an output before the drive pulse edge changing. The touch panel controller contributes to the shortening of the time for touch detection by the touch panel and the increase of the accuracy of touch detection.