Light-emitting diodes with carrier extraction electrodes

Details Light-emitting diodes with carrier extraction electrodes Light-emitting diodes with carrier extraction electrodes

2008-10-01

2011-11-08

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S512000, C313S494000, C313S498000, C257S081000, C257S079000, C257S099000, C257S100000

Reexamination Certificate

active

08053982

ABSTRACT:
One embodiment of the present invention relates to a light-emitting diode having one or more light-emitting layers, a pair of electrodes disposed on the light-emitting diode so that an operating voltage can be applied to generate light from the one or more light-emitting layers, and at least one external electrode in electronic communication with the one or more light-emitting layers. Applying an appropriate voltage to the at least one external electrodes at about the time the operating voltage is terminated extracts excess electrons from the one or more light-emitting layers and reduces the duration of electron-hole recombination during the time period over which the operating voltage is turned off.

REFERENCES:
patent: 4103312 (1978-07-01), Chang
patent: 5225692 (1993-07-01), Takeuchi
patent: 6759694 (2004-07-01), Hsu
patent: 7173292 (2007-02-01), Phillips
patent: 2003/0151357 (2003-08-01), Uemura
patent: 2006/0220180 (2006-10-01), Takahashi

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