Low DC power rail-to-rail buffer amplifier for liquid crystal display application
US7411452B2 · kind B2 · utility
3Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2006 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Feb 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/45
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low DC power rail-to-rail buffer amplifier is suitable for liquid crystal display application. The buffer amplifier comprises: a dc bias stage, a pair of complementary differential amplifiers, a second stage amplifier, and output stage. The dc bias stage is used for the dc bias of the differential amplifiers and the second stage to obtain a rail-to-rail operation. This buffer amplifier can be operated in the power supply ranges of 5.5 V to the breakdown voltage. Simulated results show that the circuit draws only 5.3 μA static current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.