Stephen A Forrest

US Patent:

6387544, May 14, 2002

Filed:

Dec 2, 1998

Appl. No.:

09/204386

Inventors:

Mark E. Thompson - Anaheim CA
Loy Douglas - Lakewood CA
Stephen R. Forrest - Princeton NJ
Bryan E. Koene - Watertown MA
Diarmuid OBrien - Princeton NJ

Assignee:

The Trustees of Princeton University - Princeton NJ
The University of Southern California - Los Angeles CA

International Classification:

H05B 3312

US Classification:

428690, 428917, 313504, 313506, 540576, 540587, 564427, 564428

Abstract:

Organic light emitting devices comprising a heterostructure for producing electroluminescence having a hole transporting layer with a glass structure. The hole transporting layer comprises a compound having a symmetric molecular structure. The end groups of the symmetric molecule are hole transporting diaryl amine moieties.

US Patent:

6451455, Sep 17, 2002

Filed:

Apr 1, 1998

Appl. No.:

09/053030

Inventors:

Mark Thompson - Anaheim CA
Yujian You - Los Angeles CA
Paul E. Burrows - Princeton Junction NJ
Stephen R. Forrest - Princeton NJ

Assignee:

The Trustees of Princeton University - Princeton NJ
The University of Southern California - Los Angeles CA

International Classification:

H05B 3312

US Classification:

428690, 428917, 313504, 313506

Abstract:

An organic light emitting device comprising a heterostructure for producing electro-luminescence. The heterostructure has a charge carrier layer that includes a compound having molecules having at least one electron transporting moiety that is a 2-methyl-8-quinolinolato ligand coordinated with a metal chosen from the group Al, Ga, and In, and at least one hole transporting moiety. For example, the compound may be bis(2-methyl-8-quinolinolato)[p-(N-phenyl-2-naphthylamino)phenolato]aluminum(III), bis(2-methyl-g-quinolinolato)p-carbazolphenolato)aluminum(III), or bis(2-methyl-8-quinolinolato)(m-carbazolphenolato)aluminum(III).

US Patent:

6579632, Jun 17, 2003

Filed:

Jul 6, 2001

Appl. No.:

09/900650

Inventors:

Mark E. Thompson - Anaheim CA
Yujian You - Los Angeles CA
Scott Sibley - Baltimore MD
Paul E. Burrows - Princeton Junction NJ
Stephen R. Forrest - Princeton NJ

Assignee:

The Trustees of Princeton University - Princeton NJ
The University of Southern California - Los Angeles CA

International Classification:

H05B 3314

US Classification:

428690, 428917, 313504, 313506, 257102

Abstract:

Organic light emitting devices are disclosed which are comprised of a heterostructure for producing electroluminescence wherein the heterostructure is comprised of an emissive layer containing a phosphorescent dopant compound. For example, the phosphorescent dopant compound may be comprised of platinum octaethylporphine (PtOEP), which is a compound having the chemical structure with the formula:.

US Patent:

6830828, Dec 14, 2004

Filed:

Jun 18, 2001

Appl. No.:

09/883734

Inventors:

Mark E. Thompson - Anaheim CA
Peter Djurovich - Long Beach CA
Sergey Lamansky - Camarillo CA
Stephen R. Forrest - Princeton NJ
Marc A. Baldo - Princeton NJ
Paul E. Burrows - Kennewick WA

Assignee:

The Trustees of Princeton University - Princeton NJ
The University of Southern California - Los Angeles CA

International Classification:

H05B 3314

US Classification:

428690, 428917, 313504, 313506, 257102, 257103

Abstract:

Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula L MX, wherein L and X are distinct bidentate ligands. Compounds of this formula can be synthesized more facilely than in previous approaches and synthetic options allow insertion of fluorescent molecules into a phosphorescent complex, ligands to fine tune the color of emission, and ligands to trap carriers.

US Patent:

6863997, Mar 8, 2005

Filed:

Dec 24, 2002

Appl. No.:

10/328914

Inventors:

Mark E. Thompson - Anaheim CA, US
Jason Brooks - Watchung NJ, US
Vadim Adamovich - Lawrenceville NJ, US
Stephen R. Forrest - Princeton NJ, US
Brian D'Andrade - Princeton NJ, US

Assignee:

The Trustees of Princeton University - Princeton NJ

International Classification:

H05B033/14
C09K011/06

US Classification:

428690, 428917, 313504, 313506, 25230116, 25230135, 257102, 257103

Abstract:

The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ two emitters in a single emissive region to sufficiently cover the visible spectrum. White emission is achieved from two emitters in a single emissive region through the formation of an aggregate by one of the emissive centers. This allows the construction of simple, bright and efficient WOLEDs that exhibit a high color rendering index.

US Patent:

6869695, Mar 22, 2005

Filed:

Mar 29, 2002

Appl. No.:

10/112257

Inventors:

Mark E. Thompson - Anaheim CA, US
Jason Brooks - Los Angeles CA, US
Vadim Adamovich - Los Angeles CA, US
Stephen R. Forrest - Princeton NJ, US
Brian D'Andrade - Princeton NJ, US

Assignee:

The Trustees of Princeton University - Princeton NJ
The University of Southern California - Los Angeles CA

International Classification:

H05B033/14
C09K011/06

US Classification:

428690, 428917, 313504, 313506, 257102, 257103, 25230116, 25230135

Abstract:

The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ two emitters in a single emissive region to sufficiently cover the visible spectrum. White emission is achieved from two emitters in a single emissive region through the formation of an aggregate by one of the emissive centers. This allows the construction of simple, bright and efficient WOLEDs that exhibit a high color rendering index.

US Patent:

6872477, Mar 29, 2005

Filed:

Apr 30, 2003

Appl. No.:

10/426456

Inventors:

Mark E. Thompson - Anaheim CA, US
Yujian You - Los Angeles CA, US
Scott Sibley - Baltimore MD, US
Paul E. Burrows - Princeton Junction NJ, US
Stephen R. Forrest - Princeton NJ, US

Assignee:

The Trustees of Princeton University - Princeton NJ
The University of Southern California - Los Angeles CA

International Classification:

H05B033/14

US Classification:

428690, 428917, 313504, 313506

Abstract:

Organic light emitting devices are disclosed which are comprised of a heterostructure for producing electroluminescence wherein the heterostructure is comprised of an emissive layer containing a phosphorescent dopant compound. For example, the phosphorescent dopant compound may be comprised of platinum octaethylporphine (PtOEP), which is a compound having the chemical structure with the formula:.

US Patent:

6902830, Jun 7, 2005

Filed:

Jun 13, 2002

Appl. No.:

10/171235

Inventors:

Mark E. Thompson - Anaheim CA, US
Peter Djurovic - Long Beach CA, US
Sergey Lamansky - Camarillo CA, US
Drew Murphy - Lakewood CA, US
Raymond Kwong - Plainsboro NJ, US
Feras Abdel-Razzaq - Los Angeles CA, US
Stephen R. Forrest - Princeton NJ, US
Marc A. Baldo - Princeton NJ, US
Paul E. Burrows - Kennewick WA, US

Assignee:

The Trustees of Princeton University - Princeton NJ
The University of Southern California - Los Angeles CA

International Classification:

H05B033/14

US Classification:

428690, 428917, 313504, 313506, 257102, 257103

Abstract:

Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula LMX, wherein L and X are distinct bidentate ligands. Compounds of this formula can be synthesized more facilely than in previous approaches and synthetic options allow insertion of fluorescent molecules into a phosphorescent complex, ligands to fine tune the color of emission, and ligands to trap carriers.