Color organic light emitting diode display with improved lifetime
US6747618B2 · kind B2 · utility
52Cited by
5References
36Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 20, 2002 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Aug 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/048
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved OLED color display device, in which a display pixel has a plurality of subpixels of different colors, wherein the areas of the subpixels are different in size based on the emission efficiency of the emissive elements and the chromaticity of a target display white point, thereby protecting the subpixels whose emission efficiency is low from prematurely deteriorating, wherein the improvement comprises the relative sizes of the subpixels being further based on the relative luminance stability over time of the subpixels, thereby further extending the useful lifetime of the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.