Data driver and driving method of organic light emitting...

Details Data driver and driving method of organic light emitting... Data driver and driving method of organic light emitting...

2008-07-22

2008-07-22

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S154000

Reexamination Certificate

active

11580562

ABSTRACT:
A data driver capable of generating data signals with desired voltage values. The data driver includes a first digital-analog converter including a plurality of first switches, the first digital-analog converter selecting two reference voltages from among a plurality of reference voltages by turning on two of the first switches corresponding to high level bits of data; and a second digital-analog converter for dividing the two reference voltages into a plurality of voltages and for supplying any one of the two reference voltages and the divided voltages corresponding to low level bits of the data as a data signal to an output terminal, wherein the second digital-analog converter includes a transistor turned on by a bias voltage to compensate for a turn-on resistance of the two of the first switches.

REFERENCES:
patent: 5523772 (1996-06-01), Lee
patent: 5943000 (1999-08-01), Nessi et al.
patent: 6724336 (2004-04-01), Leung et al.
patent: 6778120 (2004-08-01), Matsui
patent: 10-2005-0078449 (2005-08-01), None

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