Source driver and operating method thereof
US11087697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2020 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Mar 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0291
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A source driver including a digital-to-analog converter and an output buffer with an interpolation function is disclosed. A digital-to-analog converter converts a plurality of digital input voltages into a plurality of analog input voltages. The output buffer interpolates the analog input voltages. The output buffer outputs a first interpolated output voltage at a first time and a second interpolated output voltage at a second time respectively. A first interpolated voltage output curve of the first interpolated output voltage versus a digital input code and a second interpolated voltage output curve of the second interpolated output voltage versus the digital input code are both non-linear and opposite each other. The output buffer averages the first interpolated voltage output curve at the first time and the second interpolated voltage output curve at the second time to achieve a linear interpolated voltage characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.