Colour calibration of emissive display devices
US7365720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2003 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Oct 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A calibration method for calibrating a fixed format emissive display device having a plurality of pixels is described In the display each pixel comprises at least three sub-pixels for emitting light of different real primary colours. The method comprises determining, for each real primary colour separately, a virtual target primary colour which can be reached by at least 80% of the pixels of the display, determining a colour gamut defined by the determined virtual target primary colours, and adjusting the drive currents to the sub-pixels to achieve a colour inside the determined colour gamut. A display having an extended range of colours is described, i.e. a gamut of colours that is more than the gamut provided by an n virtual primary colour based electronic multicolour display, as measured on a chromaticity diagram, for example. A color and/or brightness uniform image can be produced with this fixed format emissive display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.