Pixel circuit of organic light emitting display

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

2007-05-17

2010-12-28

Nguyen, Chanh (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S082000

Reexamination Certificate

active

07859491

ABSTRACT:
The pixel circuit of an organic light emitting display includes a first transistor to a seventh transistor, a first capacitor, a second transistor and an organic light emitting diode. The first capacitor stores the data signal from the first, second and third transistors, and the second capacitor stores the threshold voltage of the fourth transistor from the fifth transistor. Voltages stored in the first and second capacitors are combined by the sixth transistor, and the fourth transistor generates a driving current corresponding to a combined voltage of the voltages stored in the first and second capacitor. The seventh transistor transmits the driving current and the organic light emitting diode emits light corresponding to the driving current.

REFERENCES:
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patent: 7187351 (2007-03-01), Kwon
patent: 7205966 (2007-04-01), Numao
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patent: 7573441 (2009-08-01), Kwon
patent: 2005/0243040 (2005-11-01), Miyazawa
patent: 2006/0077137 (2006-04-01), Kwon
patent: 2007/0063935 (2007-03-01), Yoshida
patent: 2007/0200793 (2007-08-01), Kwon

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