Touch detection device and display device with touch detection function
US9916056B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2016 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Apr 20, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0445
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch detection device includes: drive electrodes that extend in a first direction and are arranged in a second direction intersecting with the first direction; detection electrodes that extend in the second direction and are arranged in the first direction to form capacitance at intersections with the drive electrodes; a driving and scanning unit that sequentially and time-divisionally selects a predetermined number of drive target electrodes to which drive signals are applied from the drive electrodes, and performs driving and scanning at a pitch smaller than a total width of a drive range including the drive target electrodes; and a coordinate correction unit that uses correction information based on a relationship between an input position at which an external object is in proximity to or in contact with a touch detection surface and a detection position detected by the detection electrodes to correct the detection position in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.