Display device driver circuit
US7173454B2 · kind B2 · utility
2Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2005 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Jul 31, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device driver circuit includes a timer circuit 20 that outputs to output stage circuits 10 a control signal for turning off IGBTs 11 and 12 when a next clock signal is not inputted to the timer circuit 20 for a predetermined period of time, and the output stage circuits 10 turn off the IGBTs 11 and 12 to put the output terminals DO thereof into a high impedance state so that an overcurrent may be prevented from flowing through the IGBTs 11 and 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.