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. 12, 2013
Filed:
Dec. 17, 2009
Jun-wei Yang, Hsin-Chu, TW;
Chia-feng Yang, Hsin-Chu, TW;
Yu-min Hsu, Hsin-Chu, TW;
Yung-tse Cheng, Hsin-Chu, TW;
Jun-Wei Yang, Hsin-Chu, TW;
Chia-Feng Yang, Hsin-Chu, TW;
Yu-Min Hsu, Hsin-Chu, TW;
Yung-Tse Cheng, Hsin-Chu, TW;
AU Optronics Corp., Science-Based Industrial Park, Hsin-Chu, TW;
Abstract
A touch panel device having high touch sensitivity includes sensing capacitors, switches, storage capacitors, a differential amplifier and a signal processing unit. During a sense period, the switches are periodically turned on alternately for periodically transferring the charges of the sensing capacitors to the storage capacitors. The differential amplifier is put in use for amplifying the voltage difference of two corresponding storage capacitors for generating a touch readout signal. The signal processing unit performs an OR operation on two touch readout signals generated during different sense periods based on different sensing capacitor combinations regarding same panel touch position for providing a touch position signal.