Pixel circuit of organic light emitting display

Details Pixel circuit of organic light emitting display Pixel circuit of organic light emitting display

2006-12-14

2010-11-23

Wang, Quan-Zhen (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S082000, C345S087000, C345S092000

Reexamination Certificate

active

07839364

ABSTRACT:
A pixel circuit of an organic light emitting display includes a first transistor that transmits a data signal from a data line in response to a scan signal from a scan line; a first capacitor that stores the data signal received from the first transistor; a second transistor for threshold voltage compensation; a third transistor that transmits the threshold voltage of the second transistor; a fourth transistor that connects the gate and drain of the second transistor in a diode-connected configuration in response to a control signal from a control line; a second capacitor that stores the threshold voltage received through the third transistor; a fifth transistor that generates a driving current corresponding to a combined voltage of the first and the second capacitors due to the turned on third transistor; and an organic light emitting diode that emits light according to the driving current.

REFERENCES:
patent: 7202606 (2007-04-01), Eom et al.
patent: 7259735 (2007-08-01), Kasai
patent: 7573441 (2009-08-01), Kwon
patent: 7688292 (2010-03-01), Park et al.
patent: 2004/0196239 (2004-10-01), Kwon
patent: 2005/0212446 (2005-09-01), Eom
patent: 2007/0200793 (2007-08-01), Kwon
patent: 2004-310006 (2004-11-01), None
patent: 2006-039527 (2006-02-01), None

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