Scanning circuit for touch screen, touch screen and touch control method
US10545606B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 5, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | May 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04166
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure discloses a scanning circuit for touch screen, touch screen and touch control method. The canning circuit for touch screen includes: a multiplexing circuit and a touch driving circuit coupled to the same, the touch driving circuit includes m signal input terminals, each of which is coupled to n receiving-electrode channels, and in an ith time slot of a current scanning period, the multiplexing circuit controls the touch driving circuit to receive, through the m signal input terminals, output signals from m receiving-electrode channels, and determines a touch position according to an emitting-electrode channel corresponding to the current scanning period and the output signals of the m receiving-electrode channels, the current scanning period includes n time slots, i=1, 2, . . . n, and the output signals of the m receiving-electrode channels received by the touch driving circuit in each time slot are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.