Amplifier circuit, driving circuit of display apparatus, portable telephone and portable electronic apparatus
US7005916B2 · kind B2 · utility
11Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Dec 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0842
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To obtain an amplifier circuit capable of realizing low power consumption and high-precision output. A controlling unit controls each switch of an offset correction circuit to select one capacitor associated with a voltage level of an input signal selected by an input signal selection unit, have an offset voltage of an operational amplifier generated according to the voltage level of the input signal stored by the selected capacitor, and correct an output of the operational amplifier by using the offset voltage held by the selected capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.