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. 26, 2024
Filed:
Sep. 22, 2022
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventor:
Takashi Hatano, Kanagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/041 (2006.01); G06F 3/044 (2006.01);
U.S. Cl.
CPC ...
G06F 3/041662 (2019.05); G06F 3/0412 (2013.01); G06F 3/04164 (2019.05); G06F 3/0446 (2019.05);
Abstract
In a display system, a display device includes a plurality of common electrodes commonly used for image display and touch detection. A second drive circuit supplies a touch drive signal to each of the plurality of common electrodes. A touch detection circuit detects a touch by an object on the display device based on a detection signal received from each of the plurality of common electrodes. The touch drive signal includes a harmonic having a frequency different from a designated frequency and does not include a harmonic having the designated frequency.