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:
Apr. 18, 2023
Filed:
Sep. 06, 2022
Sharp Display Technology Corporation, Kameyama, JP;
Takuma Yamamoto, Kameyama, JP;
Takenori Maruyama, Kameyama, JP;
Shinji Yamagishi, Kameyama, JP;
Kazutoshi Kida, Kameyama, JP;
Yasuhiro Sugita, Kameyama, JP;
Hiroshi Fukushima, Kameyama, JP;
Sharp Display Technology Corporation, Kameyama, JP;
Abstract
A touch panel includes a transmission electrode layer that includes a transmission electrode to which a drive signal is supplied, a reception electrode layer that includes a position detection electrode and a pressing force detection electrode that form capacitance between the transmission electrode layer and themselves, in accordance with the capacitance, at least one of touching and pressing force is detected. The touch panel further includes a pressure-sensitive layer interposed between the transmission electrode layer and the reception electrode layer. The pressure-sensitive layer includes a first dielectric layer of which dielectric constant exhibits negative temperature properties in a predetermined temperature range, and a second dielectric layer of which dielectric constant exhibits positive temperature properties in the predetermined temperature range.