Touch signal detection circuit and method, and touch device
US9720540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2014 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Apr 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a touch signal detection circuit. The touch signal detection circuit includes: a processing unit, at least one linear transmitting electrode, and at least two linear receiving electrodes; the transmitting electrode is perpendicular to the receiving electrode, the receiving electrode is perpendicular to a source driver line of a display screen, and each receiving electrode and each transmitting electrode form one node mutual capacitance; the processing unit acquires capacitance change values of at least two node mutual capacitances, and acquires a location of a touch signal according to the capacitance change values of the at least two node mutual capacitances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.