Pixel structure for an active matrix OLED
US6753655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Dec 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0223
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel structure for an active matrix OLED. A first switching transistor has a control terminal coupled to a first scan line, and a first terminal coupled to a data line. A first P-type transistor has a drain and a gate coupled to each other, and a source coupled to a voltage source. The drain is also coupled to a second terminal of the first switching transistor. A second P-type transistor has a source coupled to the voltage source, and a second switching transistor has two terminals coupled between gates of the first and second P-type transistors, and a control terminal coupled to a second scan line. A storage capacitor is coupled between the voltage source and the gate of the second P-type transistor. An OLED has an anode coupled to the drain of the second P-type transistor and a cathode coupled to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.