Data driver, organic light emitting display device using the same, and method of driving the organic light emitting display device
US8659511B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 7, 2006 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Jun 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2352/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data driver capable of displaying images with a substantially uniform brightness, an organic light emitting display device using the same, and a method of driving the organic light emitting display device. The data driver includes a plurality of current sink units for controlling predetermined currents to flow through data lines, a plurality of voltage generators for resetting values of gray scale voltages using compensation voltages generated when the predetermined currents flow, a plurality of digital-to-analog converters for selecting one gray scale voltage among the gray scale voltages as a data signal in response to bit values of the data supplied from the outside, and a plurality of switching units for supplying the data signal to the data lines. The predetermined currents may be set equal to pixel currents that correspond to a maximum brightness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.