Touch driving system with low display noise
US10108302B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Aug 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch driving system with low display noise comprises a TFT layer having a plurality of display elements for display based on a display driving signal and a display pixel signal; and a touch detection device for detecting if an external object has approached based on a touch driving signal. In a first time period of a display frame, a touch and display control subsystem provides the display driving signal, the display pixel signal, and the touch driving signal to display and perform touch detection simultaneously. In the first time period, the display pixel signal is a constant signal. In a second time period of the display frame, the touch and display control subsystem only provides the display driving signal and the display pixel signal to display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.