Active matrix organic light emitting diodes pixel circuit
US7580015B2 · kind B2 · utility
6Cited by
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6Claims
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Key dates
| Filing date | Feb 24, 2006 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Mar 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel circuit of an active-matrix organic light-emitting diode does not provide currents for an organic light-emitting diode during a compensation period, and provides currents, free from variation of a threshold voltage of a thin-film transistor, for the organic light-emitting diode during a data input period, so as to improve gray levels, increase contrast ratios, and decrease power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.