Touch sensing circuit
US8841927B2 · kind B2 · utility
5Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2011 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jun 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch sensing circuit detects a difference in variation of coupling capacitances between mutually adjacent driving electrodes through the use of a differential amplifier, and senses whether or not a touch is made on a touch screen panel, thereby being capable of removing display noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.