Touch display device and gate driver thereof
US10852867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2018 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Oct 3, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch display device at least including a gate driver is provided. The gate driver at least includes a pull-up control circuit, a pull-down control circuit and a pull-up output circuit. The pull-up control circuit sets the voltage level of a first node to a first voltage level. The pull-down control circuit is configured to set the voltage level of the first node to a second voltage level and includes a first transistor receiving an operation voltage. The second voltage level is lower than the first voltage level. The pull-up output circuit generates a scan signal according to the voltage level of the first node. During a first display period and a second display period, the operation voltage is equal to a first gate voltage. During a touch-sensing period, the operation voltage is equal to a second gate voltage that is lower than the first gate voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.