Pixel driving circuit and driving method thereof, display substrate and display device
US12211443B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 29, 2022 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Jul 29, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0257
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel driving circuit includes: a data writing circuit, a compensation control circuit, a light emission control circuit, a voltage regulation circuit, a driving transistor, the compensation control circuit is connected with the driving transistor at a first node, the compensation control circuit is connected with the data writing circuit at a second node, the compensation control circuit, the light emission control circuit, the voltage regulation circuit are connected with the driving transistor at a third node; the compensation control circuit obtains a threshold voltage of the driving transistor, writes a third voltage into the second node, and writes a light emission voltage into the first node according to a variation in a voltage at the second node and the threshold voltage; the voltage regulation circuit maintains a voltage at the third node stable during the compensation control circuit writing the light emission voltage into the first node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.