Touch panel with pressing-force measuring performance
US9507456B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2013 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Dec 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04106
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch panel equipped with both a capacitive sensor and a piezoelectric sensor, wherein the touch panel solves the problems of increased panel thickness, changes in the optical properties, and increased manufacturing costs. This touch panel is provided with force measurement using a piezoelectric body and capacitive point detection. The force measurement uses a pair of electrodes arranged with the piezoelectric body sandwiched therebetween. The point detection uses one electrode and another electrode. At least one top electrode is disposed on the side of the top surface of the piezoelectric body, and at least one bottom electrode is disposed on the side of the bottom surface of the piezoelectric body. One electrode among the pair of electrodes used in force measurement is a bottom electrode, and at least one electrode among the two electrodes used in point detection is a top electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.