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:
Aug. 30, 2022
Filed:
Jan. 23, 2020
Cambridge Touch Technologies Ltd., Cambridge, GB;
Constantinos Tsangarides, Cambridge, GB;
Paridhi Sharma, Cambridge, GB;
Michael Astley, Cambridge, GB;
Arokia Nathan, Cambridge, GB;
Xiang Cheng, Cambridge, GB;
Jiahao Li, Cambridge, GB;
Cambridge Touch Technologies Ltd., Cambridge, GB;
Abstract
A touch sensor () for combined capacitive touch and force sensing is described. The touch sensor () includes number plurality of first electrodes () and a number of second electrodes (). The second electrodes () are insulated from the first electrodes (). The first and second electrodes () form a grid for capacitive touch sensing. The touch sensor () also includes a transparent cover (). The touch sensor () also includes a transparent piezoelectric film () arranged between the transparent cover () and the first and second electrodes (). The touch sensor () also includes a patterned counter electrode () disposed between the transparent piezoelectric film () and the transparent cover (). The patterned counter electrode () is a conductive grid formed from the union of plurality of counter electrode line elements (). A pitch of the counter electrode line elements () is larger than a pitch of the first electrodes () and/or second electrodes ().