OLED pixel driving circuit and driving method thereof
US10460665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2017 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Nov 30, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An OLED pixel driving circuit includes a first TFT, having a gate connected to a second node, and a source and a drain connected to a third node and a fourth node respectively; a second TFT, having a gate receiving a first signal, and a source and a drain connected to the second node and the fourth node respectively; a third TFT, having a gate receiving a second signal, and a source and a drain connected to a first node and the second node respectively; a fourth TFT, having a gate receiving a third signal, and a source and a drain connected to the fourth node and an anode of an OLED respectively; and a capacitor having two ends connected to the first node and the second node respectively. The third node is connected to a high voltage source and the first node is connected to a voltage input end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.