Touch panel, touch input device, and electronic device
US10108287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Nov 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04144
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch panel hardly affected by pyroelectric noise due to temperature includes a first pyroelectric material and a second pyroelectric material, and is capable of detecting press pressure applied to the first pyroelectric material and/or the second pyroelectric material. The upper surface of the first pyroelectric material and the lower surface of the second pyroelectric material are surfaces on which a positive charge is generated when the temperature increases, and a negative charge is generated when the temperature decreases. The lower surface of the first pyroelectric material and the upper surface of the second pyroelectric material are surfaces on which a negative charge is generated when the temperature increases, and a positive charge is generated when the temperature decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.