Data driver for organic light emitting diode display

Details Data driver for organic light emitting diode display Data driver for organic light emitting diode display

2007-11-06

2007-11-06

Lewis, David L. (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S082000, C345S098000

Reexamination Certificate

active

11026110

ABSTRACT:
A data driver for organic light emitting diode display is disclosed. A pixel data of K bits is divided into an N bits data and an M bits data. A number of N bits data are processed by a number of main digital-to-analog current converters and a number of main voltage storing current copier/current mirror so as to generate a number of main regenerating currents. Besides, a number of M bits data are processed by a number of secondary digital-to-analog current converters and a number of secondary voltage storing current copier/current mirror so as to generate a number of secondary regenerating currents. The brightness of the pixel is related to the sum of the corresponding main regenerating current and the corresponding secondary regenerating current. The invention can reduce the error resulted from the component variation of digital-to-analog converters.

REFERENCES:
patent: 6256024 (2001-07-01), Maekawa
patent: 6664943 (2003-12-01), Nakajima et al.
patent: 6686858 (2004-02-01), Nagao
patent: 6909411 (2005-06-01), Yamazaki et al.

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