Electroluminescent display device
US11195461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2020 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Dec 9, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0435
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electroluminescent display device having a plurality of pixels is disclosed. Each pixel includes a driving transistor having a gate connected to a first node, a source connected to a third node, and a drain connected to a fourth node, the driving transistor generating pixel current corresponding to a data voltage when a high-level source voltage is applied to the third node, a light emitting element connected between the fourth node and an input terminal for a low-level source voltage, an internal compensator controlling voltages of the first to fourth nodes in accordance with operations of a plurality of switching transistors in an initialization period, a data writing period and an emission period, and a refresh transistor configured to apply the high-level source voltage to the second node in accordance with a scan signal in a refresh period preceding an initialization period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.