Threshold voltage compensating pixel circuit and organic light emitting display using the same
US9336714B2 · kind B2 · utility
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Key dates
| Filing date | Feb 13, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Dec 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0861
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel includes an organic light emitting diode (OLED), a first transistor having a gate electrode coupled to a first node, a first electrode coupled to a first power supply, and a second electrode coupled to the OLED, a first capacitor for storing a data signal, and a second capacitor coupled between the first node and the second electrode of the first transistor to charge a voltage corresponding to the data signal and a threshold voltage of the first transistor, wherein, in a period where a voltage stored in the first capacitor is supplied to the first node, the second capacitor is electrically blocked from the first node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.