Degradation compensation unit, light-emitting apparatus including the same, and method of compensating for degradation of light-emitting apparatus
US8922595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2011 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Jul 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A degradation compensation unit including a first operation unit receiving downscaled gray data of each pixel for one frame at set or predetermined intervals and calculating a degradation time of each pixel corresponding to the downscaled gray data; an accumulation operation unit receiving the degradation time of each pixel from the first operation unit and calculating an accumulated degradation time of each pixel by accumulating the degradation time of each pixel; a weight calculation unit receiving the accumulated degradation time of each pixel from the accumulation operation unit and calculating a degradation compensation weight for each pixel based on the accumulated degradation time of each pixel; and a second operation unit producing compensated gray data for each pixel corresponding to the degradation compensation weight for each pixel, which is received from the weight calculation unit, and providing the compensated gray data for each pixel to a data driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.