Display element drive device
US6496168B1 · kind B1 · utility
46Cited by
5References
2Claims
0Family size
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Key dates
| Filing date | Oct 2, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transistor Q11 for supplying driving currents Ia to In to EL display elements 11a to 11n is provided in a stabilization voltage supply circuit 33. The transistor Q11 is connected to a current sensing resistor Ras for detecting a collector current of the transistor Q11. When a total current Ix for driving the EL display elements rises to a certain abnormal level, a bias suppressing element Qa is turned on to thereby reduce a base-emitter bias of the transistor 11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.