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:
Sep. 01, 2026
Filed:
Jan. 21, 2022
Cambridge Touch Technologies Ltd., Cambridge, GB;
Constantinos Tsangarides, Cambridge, GB;
Michael Astley, Cambridge, GB;
Riccardo Micci, Cambridge, GB;
Jiahao Li, Cambridge, GB;
Cambridge Touch Technologies Ltd., Cambridge, GB;
Abstract
A device () including a piezoelectric sensor (). The piezoelectric sensor () includes a layer of piezoelectric material () disposed between a number of sensing electrodes () and at least one counter electrode (). The device () also includes a controller () connected to the piezoelectric sensor (). The sensing electrodes () are arranged to form one or more active regions (). Each active region () includes one or more primary sensing electrodes () and one or more secondary sensing electrodes (). The secondary sensing electrodes () are separated from the primary sensing electrodes () by a perimeter (). The controller () is configured, for each active region (), to monitor primary piezoelectric charges induced on each primary sensing electrode () and to monitor secondary piezoelectric charges induced on each secondary sensing electrode (). The controller () is also configured, in response to detecting one or more primary and/or secondary piezoelectric charges, to determine whether a corresponding applied force has a centroid within the perimeter () based on comparing the primary piezoelectric charges to the secondary piezoelectric charges.