Pixel circuit, method for driving the same, display panel and display device
US10497323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2018 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Aug 3, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure discloses a pixel circuit, a method for driving the same, a display panel and a display device, which utilize a first initialization module, a data writing module, a threshold compensation module. Besides, since the pixel circuit is further provided with a second initialization module and the second initialization module is configured to enable a signal of a first voltage terminal to flow through the driving transistor before a light emitting device emits light, after the pixel circuit displays a low-grayscale image and before the pixel circuit displays a high-grayscale image, a large current is enabled to flow through the driving transistor to compensate for a threshold voltage hysteresis effect of the driving transistor, thereby improving the problem that the brightness of a first frame is low after an existing pixel circuit has switched from displaying a low-grayscale image to displaying a high-grayscale image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.