Driving circuit for active matrix organic light emiting diode
US6806853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Apr 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0276
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A driving circuit for an active matrix organic light emitting diode includes a gamma voltage generation unit for generating differentiated gamma reference voltages corresponding to red, green, and blue colors and a driving unit for outputting a video data signal of a frame, by receiving the respective gamma reference voltages corresponding to red, green and blue colors generated in the gamma voltage generation unit and the power voltages corresponding to red, green and blue colors from the power supply unit. The driving circuit for the active matrix organic LED generates the video signal applied to the pixel for displaying the respective RGB colors, using the power voltages and gamma reference voltages which are independent according to the respective RGB colors and accordingly the pixel can be driven exactly as described using organic substances having different RGB characteristics, thus to improve the quality of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.