Electroluminescent display device having equalized luminance
US6504520B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1999 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Feb 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0223
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electroluminescent display panel having a matrix electrode structure composed of scanning electrodes and data electrodes is driven by supplying scanning voltages either alternately or simultaneously from both sides thereof in order to eliminate uneven luminance along a longitudinal direction of the scanning electrodes. Two scanning electrode driving circuits, each connected to each side of the scanning electrodes, may be used. Since an overall luminance of the electroluminescent display panel is a summation of the luminance obtained by scanning the scanning electrodes from one side and the other side, the luminance along the scanning electrodes becomes uniform by scanning from both sides. The data electrodes may be driven from both sides thereof in the same manner as in the scanning electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.