Pixel driving circuit and display device
US11120743B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2020 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Aug 27, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0233
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel driving circuit includes a driving transistor connected in series between a first power supply voltage terminal and a second power supply voltage terminal. The driving transistor has a control terminal electrically connected to a first node, a first terminal electrically connected to a second node, and a second terminal electrically connected to a third node. The second node is located between the first power supply voltage terminal and the driving transistor. The third node is located between the second power supply voltage terminal and the driving transistor. A light-emitting element is connected in series between the third node and the second power supply voltage terminal. A voltage maintaining module is configured to maintain a voltage of the third node unchanged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.