Method for calibrating, characterizing and driving a color flat panel display
US6677958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Mar 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0693
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of calibrating a flat panel, includes the steps of: providing a flat panel display having an overall and individual channel adjustment for both gain and offset and an adjustment to provide a white point for the display, the white point including color temperature, chromaticity and luminance level; displaying a first target using a low level code value for each channel of the display; sensing the luminance level of the displayed first target; adjusting the gain of the display so that the sensed luminance level matches a first predetermined aim value representing a luminance level at least 3 decades lower than a maximum luminance level; displaying a second target using intermediate code values for each channel of the display device; sensing the luminance level and chromaticities of the displayed second target; adjusting the individual channel offsets so that the luminance level matches a second predetermined aim value representing an intermediate luminance level and the chromaticities match a first set of predetermined chromaticities that represent a desired white point; displaying a third target using maximum code values for each channel of the display; sensing the luminanc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.