Capacitive touch detecting device and method using level shift, and display device using the same
US9703425B2 · kind B2 · utility
2Cited by
2References
22Claims
0Family size
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Key dates
| Filing date | Sep 1, 2011 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Sep 1, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04111
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a touch detecting device that detects occurrence of a level shift phenomenon of a voltage variation to thus acquire a touch signal, when a touch capacitance due to a touch input is added to a common electrode capacitance formed between a common electrode and a sensor pattern. Accordingly, the touch signal may be stably obtained in spite of external noise, and an influence due to a parasitic capacitance may be minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.