Shift register unit and threshold voltage compensation method thereof, driving circuit and display apparatus
US11610559B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | May 21, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure discloses a shift register unit and a threshold voltage compensation method thereof, a driving circuit and a display apparatus. The shift register unit includes a cascaded output circuit coupled to a pull-up node, a clock signal input terminal, and a cascaded signal output terminal. The shift register unit is configured to transmit a clock signal from the clock signal input terminal to the cascaded signal output terminal under control of the pull-up node. A compensation circuit has a voltage output terminal coupled to the pull-up node, and is configured to provide an output voltage signal through the voltage output terminal during a blanking phase of a frame. The output voltage signal drives reverse drift of a threshold voltage of the cascaded output circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.