Touch detection circuit and touch detection method thereof
US11327607B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2021 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Aug 10, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch detection circuit and a touch detection method are provided. The touch circuit coupled to touch areas of touch panel includes a touch controller and a detection circuit. The touch controller performs a touch detection on the touch areas sequentially. The detection circuit transmits a first detection signal to a boundary area of the touch areas which are not touch detected to receive a first feedback signal. The detection circuit transmits a second detection signal to a corresponding central area of the touch areas which are not touch detected to receive a second feedback signal. The touch controller compares the first feedback signal and the second feedback signal to generate a capacitance variation between the boundary area and the corresponding central area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.