Touch device having switch circuits controlling between touch electrodes and drive chip, touch system and control method thereof
US11520437B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Mar 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of this disclosure provide a touch device, a touch system and a control method thereof. The touch device includes: a touch screen including: a plurality of touch electrodes, and a plurality of switch circuits corresponding to the plurality of touch electrodes respectively; and a drive chip bound and connected with the touch screen. The touch electrodes are coupled to the drive chip through the corresponding switch circuits. The drive chip is configured to: determine that the touch screen is contacted by an interference object and determine an interference area, according to capacitance values of the touch electrodes during a time period when a stylus is interacting with the touch screen, and disconnect touch electrodes in the interference area from the drive chip through corresponding switch circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.