Electroluminescent display device
US8125414B2 · kind B2 · utility
1Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2002 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Sep 25, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An EL display device is operable in analogue and digital modes. In the analogue mode a current is supplied to the EL display elements (2) in dependence on a data signal (6) supplied to the pixel, and in the digital mode one of two voltages is provided across the EL display elements in dependence on the data signal supplied to the pixel. This enables the display to have a low power standby mode in which a digital drive scheme is implemented. This is particularly appropriate for static images and preferably for images without grey scales. The first mode is the normal current addressing mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.