Organic electroluminescent device

Details Organic electroluminescent device Organic electroluminescent device

2005-11-23

2009-10-13

Garrett, Dawn (Department: 1794)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000

Reexamination Certificate

active

07601439

ABSTRACT:
An organic electroluminescent device includes an emission layer interposed between a first electrode and a second electrode. The emission layer may be composed of a host material and a phosphorescent dopant material. The host material may be composed of a mixture of a hole transport material and an electron transport material. The hole transport material may be a carbazole compound and the electron transport material may include at least a compound selected from spirofluorenes and organic metal complexes. The use of the mixture facilitates the re-combination of holes and electrons in neighboring organic layers, thus decreasing the driving voltage and increasing the luminous efficiency and lifetime of the organic electroluminescent device.

REFERENCES:
patent: 2002/0034659 (2002-03-01), Nishi et al.
patent: 2002/0125818 (2002-09-01), Sato et al.
patent: 2003/0068528 (2003-04-01), Thompson et al.
patent: 2003/0072964 (2003-04-01), Kwong et al.
patent: 2003/0143422 (2003-07-01), Chen
patent: 2004/0170863 (2004-09-01), Kim et al.
patent: 2004/0247937 (2004-12-01), Chen et al.
patent: 2005/0006642 (2005-01-01), Tung et al.
patent: 2005/0064233 (2005-03-01), Matsuura et al.
patent: 2006/0257684 (2006-11-01), Arakane et al.
patent: 1 371 709 (2003-12-01), None
patent: 2003-007467 (2003-01-01), None
patent: 2005-255986 (2005-09-01), None
patent: 2006-013482 (2006-01-01), None
patent: 1020030097363 (2003-12-01), None
patent: 03-033617 (2003-04-01), None
patent: 2004-018588 (2004-03-01), None
patent: 2004-020373 (2004-03-01), None
patent: 2004-099338 (2004-11-01), None
patent: 2004/101491 (2004-11-01), None
patent: WO 2005/029923 (2005-03-01), None
Gang Cheng, et al., “White Organic Light-Emitting Devices Using a Phosphorescent Sensitizer”, Applied Physics Letters, vol. 82, No. 24, pp. 4224-4226, Jun. 16, 2003.

Affiliated with

Also associated with

Rating

Organic electroluminescent device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Organic electroluminescent device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organic electroluminescent device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4086521