Data driver circuits for a display in which a data current is generated responsive to the selection of a subset of a plurality of reference currents based on a gamma signal and methods of operating the same
US8044977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2006 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Apr 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0276
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data driver for a display includes a reference current generator that is configured to generate L gray scale reference currents, the L gray scale reference currents being associated with non-zero gray scale levels, a gamma selection module that is configured to select M gamma reference currents from the L gray scale reference currents responsive to a gamma signal, a gamma voltage generator that is configured to generate a zero gray scale level gamma reference voltage, and a data current generator that is configured to generate a data current responsive to a selected one of the M gamma reference currents or the zero gray scale level gamma reference voltage responsive to a color signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.