Assuring uniformity in the output of an OLED
US7859492B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2006 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | May 15, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display area of a display panel is divided into a plurality of areas, and a current detector detects a driving current (i.e. CV current) that flows when light is emitted from an area or a block including a plurality of areas. Such current detection is repeated while sequentially changing the target area or block and a CPU detects an area that has a current value different from that of other areas (i.e. an area that requires correction) based on results of the results of current detection. A similar process is performed on smaller areas obtained by subdividing the area to find a smaller area that requires correction. Thus, a correction value is obtained for each pixel and the correction values are efficiently calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.