Pixel circuit and driving method thereof, display device and driving method thereof
US11501707B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Mar 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel circuit includes: pixel units, wherein each pixel unit includes a light-emitting element and a pixel driving circuit, the pixel driving circuit and the light-emitting element are electrically connected to a first node; a first compensation sub-circuit electrically connected to each pixel driving circuit, and configured to provide an initialization signal to the pixel driving circuit, obtain a voltage at the first node when the light-emitting element emits light via the pixel driving circuit, and generate a compensation data signal based on the voltage at the first node; and a second compensation sub-circuit electrically connected to each pixel driving circuit and configured to keep the voltage at the first node within a set operating voltage range of the light-emitting element. The pixel driving circuit is further configured to initialize the first node based on the initialization signal, and use the compensation data signal to drive the light-emitting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.