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. 05, 2017
Filed:
Oct. 16, 2014
Shanghai Tianma Micro-electronics Co., Ltd., Shanghai, CN;
Tianma Micro-electronics Co., Ltd., Shenzhen, CN;
SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD., Shanghai, CN;
TIANMA MICRO-ELECTRONICS CO., LTD., Shenzhen, CN;
Abstract
An touch panel detecting a touch position of an electromagnetic stylus is disclosed. The touch panel includes first and second coils, and drive and detection circuits. The first coils include a plurality of subgroups of first coils, which includes a first group of first coils and a second group of first coils. The first group of first coils includes at least one subgroup of first coils, and the second group of first coils includes at least one subgroup of first coils. In addition, subgroups of the first and second groups of first coils are alternately arranged. The first group of first coils receive a signal from the drive circuit and emit signals, the second group of first coils receive signals from the stylus and generate induction signals, and the detection circuit determines a value of a coordinate of the touch position of the stylus based on the induction signals.