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1. (WO2018140364) PRESSURE SENSITIVE STYLUS

Pub. No.:    WO/2018/140364    International Application No.:    PCT/US2018/014754
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Wed Jan 24 00:59:59 CET 2018
IPC: G06F 3/0354
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventors: MISHALOV, Vadim
PERETZ, Ahia
Title: PRESSURE SENSITIVE STYLUS
Abstract:
An apparatus includes a housing, a tip that moves with respect to the housing based on applied contact force and a pressure sensor that detects the force applied on the tip. The pressure sensor includes a first element integrated or fixed to the tip and a second element that is stationary with respect to the housing and positioned to face the first element. The first element is formed from a rigid material that is conductive. The second element is conductive and has elastic properties. In addition, one of the first element or the second element is coated with a non-conductive layer. The first element moves toward the second element based on force applied on the tip and deforms the second element based on the force. The sensor additionally includes a circuit to detect capacitance between the first element and the second element.