Capacitive sensing device capable of eliminating influence from mutual capacitance and operating method thereof
US9606671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A capacitive sensing device including a touch panel and a controller chip is provided. The touch panel includes a plurality of first electrodes and a plurality of second electrodes. The controller chip includes a plurality of input capacitors and a plurality of output resistors. The input capacitors are selectively coupled to signal inputs of the first electrodes and the second electrodes, respectively. The output resistors are respectively coupled to signal outputs of the first electrodes and the second electrodes. The input capacitors and the output resistors are configured to form bridge circuits to suppress the influence of mutual capacitance between the first electrodes and the second electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.