Touch detection device, display device with touch detection function, and electronic apparatus
US9727163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jul 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to an aspect, a touch detection device includes drive electrodes, touch detection electrodes, a signal generation unit that generates direct-current signals having voltages different from one another, a first drive unit that selectively supplies one of the direct-current signals to the drive electrodes, an element, a second drive unit that selectively supplies one of the direct-current signals to one end of the element in synchronization with the first drive unit, and a detection unit that acquires output values from the touch detection electrodes and an output value from the element at the same time, and detects proximity or contact of a target object based on values obtained by correcting the output values from the touch detection electrodes using the output value from the element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.