Device and method for self-capacitance touch sensing
US10222916B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Mar 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0443
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch panel device includes a touch panel including sensing electrodes, a selector circuitry; a sensing circuitry configured to generate sensed signals having signal levels depending on self-capacitances of connected ones of the sensing electrodes, and a processor configured to perform touch sensing of the touch panel, based on the sensed signals. When the touch panel device is placed in a first state, the selector circuitry electrically connects first sensing electrodes to the sensing circuitry in each operation cycle. When the touch panel device is placed in a second state, the selector circuitry electrically connects second sensing electrodes to the sensing circuitry in each operation cycle. The number of the second sensing electrodes connected to the sensing circuitry in each operation cycle for the second state is less than the number of the first sensing electrodes connected to the sensing circuitry in each operation cycle for the first state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.