Active pen with tip pressure sensor
US10048781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2015 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Jul 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Active position indicator comprising a movable tip element (10) configured to be displaced from an initial position in a displacement direction by a tip displacement depending on the force acting on a tip (3) arranged on a distal end of the tip element (10); a position signal circuit connected with said movable tip element (10) and configured to generate an indicator position signal to be applied on the tip (3); and a force sensor for detecting a force acting on the tip comprising a capacitive element with a capacitance value depending on the tip displacement for generating an electric feedback signal indicating the tip displacement; wherein the capacitive element comprises a capacitor distance depending on the tip displacement and a capacitor surface depending on the tip displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.