Organic light emitting display and degradation compensation method thereof
US9230472B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Dec 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An organic light emitting display includes a display panel including pixels, a degradation sensing circuit which senses a threshold voltage of organic light emitting diodes included in the pixels and calculates an average degradation value defined by an average luminance value due to the degradation based on the sensed threshold voltage, a compensation target adjustor which adjusts a compensation target based on the average degradation value, each time the average degradation value is reduced by a previously determined reference value, and a data modulator which adds and subtracts a luminance compensation value determined depending on the adjusted compensation target to and from digital video data and modulates the digital video data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.