White light-emitting device with improved doping

Details White light-emitting device with improved doping White light-emitting device with improved doping

2005-04-05

2005-04-05

Garrett, Dawn (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C257S088000, C257S098000, C313S504000, C313S506000

Reexamination Certificate

active

06875524

ABSTRACT:
Organic light-emitting diodes (OLEDs) that produce white light include an anode, a hole-transporting layer disposed over the anode, a blue light-emitting layer disposed over the hole-transporting layer, an electron-transporting layer disposed over the blue light-emitting layer, and a cathode disposed over the electron-transporting layer. The hole-transporting layer is doped with both a yellow-emitting and a red-emitting dopant. When used together with red, green, and blue color filters, the OLEDs produce red, green, and blue light with good color quality and high efficiency. Also disclosed are multicolor display devices utilizing the OLEDs together with color filters or together with both color filters and liquid-crystal light valves.

REFERENCES:
patent: 4769292 (1988-09-01), Tang et al.
patent: 4885211 (1989-12-01), Tang et al.
patent: 5405709 (1995-04-01), Littman et al.
patent: 5683823 (1997-11-01), Shi et al.
patent: 20030170496 (2003-09-01), Hieda et al.
patent: 07-142169 (1995-02-01), None
“White light-emitting organic electroluminescent devices using the poly(N-vinylcarbazole) emitter layer doped with three fluorescent dyes” by J. Kido et al., Applied Physics letter 64 (7), Feb. 14, 1994, p. 615-617.
“Multilayer White Light-emitting Organic Electroluminescent Device” by J. Kido et al., Science, vol. 267, Mar. 3, 1995, p. 1332-1334.
“White-light-emitting organic electroluminescent devices based on interlayer sequential energy transfer” by R. S. Deshpande et al., Applied Physics letters, vol. 75, No. 7, Aug. 16, 1999, p. 888-890.

Affiliated with

Also associated with

Rating

White light-emitting device with improved doping does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with White light-emitting device with improved doping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and White light-emitting device with improved doping will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3395384