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:
Feb. 19, 2013
Filed:
Jul. 14, 2010
Chun-chung Huang, Hsinchu, TW;
I-shu Lee, Keelung, TW;
Hsiu-ju Yang, Taichung, TW;
Ching-chung Wang, Hsinchu, TW;
Kun-ming Tsai, Hsinchu, TW;
Yu-hui Lin, Dajia Township, Taichung County, TW;
Chun-Chung Huang, Hsinchu, TW;
I-Shu Lee, Keelung, TW;
Hsiu-Ju Yang, Taichung, TW;
Ching-Chung Wang, Hsinchu, TW;
Kun-Ming Tsai, Hsinchu, TW;
Yu-Hui Lin, Dajia Township, Taichung County, TW;
Elan Microelectronics Corporation, Hsinchu, TW;
Abstract
A sensing method for a capacitive touch panel includes charging a measure capacitor, setting the voltage across a mutual capacitor at the intersection of two traces of the capacitive touch panel, and then injecting partial charges of the measure capacitor into the mutual capacitor. When the intersection is touched, the capacitance value of the mutual capacitor is changed, and consequently the amount of charges injected into the mutual capacitor is changed. Hence, the voltage of the measure capacitor could be detected to determine whether or not the intersection is touched.