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:
Jan. 02, 2018
Filed:
Sep. 08, 2015
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Pasi Kemppinen, Tampere, FI;
Matti Pellikka, Lempäälä, FI;
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A display with a force sensing function has two layers of a reference voltage, for example a ground voltage. One reference voltage layer is inside the display stack. A sensor layer between the two reference voltage layers senses capacitance from the distance between the sensor layer and the reference voltage layer. The capacitance changes according to the force applied to the display, as the display moves slightly when the user presses the display. A thin foam layer allows the distance between the sensor layer and the reference voltage to change. This change is reflected in the measured capacitance. Multiple force sensors also enable detection of the position of the touch.