EL panel drive system
US4801920A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1983 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drive system for a thin-film EL matrix display panel includes first and second voltage doubler circuits and a DC booster circuit. A 1/4V.sub.M voltage, which has the 1/4 voltage level of the modulation voltage, is applied to the first voltage doubler circuit of which an output voltage is applied to a modulation voltage applying circuit. The 1/4V.sub.M voltage is further applied to the DC booster circuit which develops an output voltage having a voltage level of 1/2V.sub.W. The thus obtained 1/2V.sub.W voltage is applied to the second voltage doubler circuit of which an output voltage is applied to a write voltage applying circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.