Method and apparatus for uniformity compensation in an electroluminescent display
US7773062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Mar 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of compensating uniformity of an EL device, having a plurality of light-emitting elements, including providing the EL display; and measuring the performance of one or more light-emitting elements at three or more different code values. At least two different groups of code values are formed from the three or more code values, while calculating a linear transformation for converting an input signal to a compensated signal from the performance measurements for each of the groups. Subsequently, the difference between the measured performance and compensated signal is calculated over the range of code values for each of the groups; while the linear transformation, having a preferred difference, is selected. Additionally an input signal is received and employed with the selected linear transformation to calculate a compensated signal to drive the EL display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.