Pixel and organic light emitting display using the same

Details Pixel and organic light emitting display using the same Pixel and organic light emitting display using the same

2007-12-18

2007-12-18

Vu, David H. (Department: 2821)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S082000, C315S169300

Reexamination Certificate

active

11227970

ABSTRACT:
A pixel including a LED and a pixel circuit. The circuit including a first transistor supplying a current to the LED corresponding to a data signal applied to a data line, a capacitor coupled to the first transistor and charged by the data signal, a second transistor coupled to a scan line and the data line supplying the data signal to the capacitor when a scan signal is being supplied, and a third transistor coupled between the first transistor and the LED and having a gate coupled to a gate of the first transistor. The pixel circuit displays images of uniform luminance by charging the threshold voltage of the first transistor in the capacitor. Further, because voltages of the gate and the second terminal of the first transistor are kept approximately equal, it is possible to display images of desired luminance by eliminating leakage current and kink effect.

REFERENCES:
patent: 2005/0140600 (2005-06-01), Kim et al.
patent: 2004-310014 (2004-11-01), None
Patent Abstracts of Japan; Publication No. 2004-310014; Publication Date: Apr. 11, 2004; in the name of Kwon.

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