Output buffer of source driver
US8736373B2 · kind B2 · utility
1Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Jun 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0291
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An output buffer of a source driver is disclosed. The output buffer includes a buffer input, a buffer output, a differential input stage, a bias current source, an output stage, a compensation capacitor, and a comparator. The output stage and the comparator are both operated between an analog supply voltage (AVDD) and a ground voltage (AGND). The comparator compares an input voltage and an output voltage and outputs a control signal to the bias current source according to the compared result to control a bias current outputted by the bias current source to enhance the slew rate of the output buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.