Organic light emitting diode display device

Details Organic light emitting diode display device Organic light emitting diode display device

2005-09-30

2009-02-03

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C315S169300, C345S076000

Reexamination Certificate

active

07486027

ABSTRACT:
An organic light emitting diode display device comprising a display panel, a plurality of light emitting diodes arranged on the display panel and having an optical amount varied according to a current amount, a sample/hold unit for supplying a current to the light emitting diodes, a D/A converter for controlling a current amount supplied to the light emitting diodes from the sample/hold unit by controlling a current amount supplied from the sample/hold unit according to image information, and a voltage controller for conducting or shielding a current between the D/A converter and the sample/hold unit by outputting a second bias voltage of which loss voltage has been compensated according to a characteristic of a transistor provided at the D/A converter to the D/A converter by receiving a first bias voltage.

REFERENCES:
patent: 6191779 (2001-02-01), Taguchi et al.
patent: 7184065 (2007-02-01), Shin
patent: 2004/0056204 (2004-03-01), Tanaka et al.
patent: 2004/0178980 (2004-09-01), Rao et al.
patent: 1435810 (2003-08-01), None
patent: 1484212 (2004-03-01), None
patent: WO 2004-025614 (2004-03-01), None

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