Active organic light emitting diode drive circuit

Details Active organic light emitting diode drive circuit Active organic light emitting diode drive circuit

2005-01-25

2005-01-25

Decady, Albert (Department: 2133)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S077000, C315S169300

Reexamination Certificate

active

06847340

ABSTRACT:
The present invention relates to an uniformly active light emitting diode drive circuit. This invention provides a 3T1C circuit structure in the emitting pixel and an additional data capacitors connecting to all the pixels are picked out and located on one side of the display panel. In addition, the connecting lines to the OLED on every pixel are all collected to one end of a transistor Moc on the other side of the display panel. Through the arrangement, it is intended that the aperture ratio of the organic electroluminescent (OLED) device can be largely improved. Moreover, an additional by-pass current transistor in parallel with data capacitor (Cd) in a data generator region outside of the pixel array can by-pass the previous left current in the circuit and thus enhance the contrast ratio of the emitting pixel.

REFERENCES:
patent: 6433488 (2002-08-01), Bu
patent: 6693388 (2004-02-01), Oomura

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