Pixel driving circuit of organic-light emitting diode
US8982020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2013 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Nov 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel driving circuit of an organic light emitting diode includes a first transistor including a first terminal, a control terminal and a second terminal and a capacitor including a first terminal and a second terminal. The first terminal and the second terminal of the capacitor are electrically coupled to the first terminal and the control terminal of the first transistor at a first node and a second node respectively. In a first period, a power source does not provide a power supply voltage to the first node, and a data voltage and a variable voltage are written in the first node and the second node respectively. In a second period, the power source provides the power supply voltage to the first node. The first transistor provides a driving current to an organic light emitting diode based on the voltage of the first node and the second node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.