Raymond Wah Kwong

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.

US Patent:

6902833, Jun 7, 2005

Filed:

Apr 1, 2003

Appl. No.:

10/405009

Inventors:

Mark E. Thompson - Anaheim CA, US
Simona Garon - Santa Monica CA, US
Raymond Kwong - Plainsboro NJ, US
Jason Brooks - Los Angeles CA, US

Assignee:

University of Southern California - Los Angeles CA
Universal Display Corporation - Ewing NJ

International Classification:

H05B033/12

US Classification:

428690, 428917, 428212, 313504, 313506

Abstract:

A device is provided, having an anode, a cathode, and a first organic layer disposed between the anode and the cathode. The first organic layer is capable of phosphorescent emissive when a voltage is applied between the anode and the cathode. A second organic layer disposed between the first organic layer and the cathode is also provided. The second organic layer is in direct contact with the first organic layer. The second organic layer may comprise a material having the structure: M may be selected from the group Ti, Zr, Hf, Nb, Re, Sn and Ge. The substituents R1 through R10 may be selected from the group consisting of alkyl and aryl groups. Each of R1 through R10 may represent no substitution, mono-, di-, or tri-substitution. The second organic layer may comprise a material having a dipole moment less than about 2. 0 debyes, such that the device has an unmodified external quantum efficiency of at least about 3% and a lifetime of at least about 1000 hours at an initial photon flux of about 10photons/sr-sec.

US Patent:

7001536, Feb 21, 2006

Filed:

Jun 16, 2004

Appl. No.:

10/870788

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:

C09K 11/06
H05B 33/14

US Classification:

25230116, 546 4, 546 10, 548103, 548402, 549 3, 549209, 428917

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.

US Patent:

7011897, Mar 14, 2006

Filed:

Aug 18, 2003

Appl. No.:

10/643413

Inventors:

Mark E. Thompson - Anaheim Hills CA, US
Peter Djurovich - Long Beach CA, US
Raymond Kwong - Plainsboro NJ, US
David B. Knowles - Apollo PA, US
Jason Brooks - Lambertville NJ, US
Robert W. Walters - Export PA, US
Bin Ma - Monroeville PA, US

Assignee:

The University of Southern California - Los Angeles CA
Universal Display Corporation - Ewing NJ

International Classification:

C09K 11/06
H05B 33/14

US Classification:

428690, 428917, 313504, 546 4, 25230116, 257 40, 257102

Abstract:

An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode, the emissive layer further comprising an emissive material having the structure: wherein each of the variables are defined herein.

US Patent:

7018723, Mar 28, 2006

Filed:

Jul 25, 2003

Appl. No.:

10/626579

Inventors:

Mark E. Thompson - Anaheim CA, US
Raymond Kwong - Plainsboro NJ, US

Assignee:

The University of Southern California - Los Angeles CA
Universal Display Corporation - Ewing NJ

International Classification:

H05B 33/12

US Classification:

428690, 428917, 313504, 313506

Abstract:

A device is provided, having an anode, a cathode, and a first organic layer disposed between the anode and the cathode. The first organic layer comprises a material that produces phosphorescent emission when a voltage is applied between the anode and the cathode. A second organic layer is disposed between the first organic layer and the cathode. The second organic layer is in direct contact with the first organic layer. The second organic layer may comprise an aromatic hydrocarbon material, comprising an aromatic hydrocarbon core optionally substituted, and wherein the substituents are the same or different, and each is selected from the group consisting of alkyl, aryl, heteroalkyl, substituted aryl, substituted heteroaryl and heterocyclic groups. The second organic layer may comprise a material having a dipole moment less than about 2. 0 debyes, such that the device has an unmodified external quantum efficiency of at least about 3% and a lifetime of at least about 1000 hours at an initial luminance of about 100 to about 1000 cd/m.

US Patent:

7291406, Nov 6, 2007

Filed:

Sep 22, 2005

Appl. No.:

11/233605

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:

H01L 51/54

US Classification:

428690, 428917, 313504, 257102, 257103, 257E51044

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.

US Patent:

7537844, May 26, 2009

Filed:

Jul 16, 2007

Appl. No.:

11/879379

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:

H01L 51/54

US Classification:

428690, 428917, 313504, 313506, 257 40, 257E51044

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.

US Patent:

7883787, Feb 8, 2011

Filed:

May 1, 2009

Appl. No.:

12/434259

Inventors:

Mark E. Thompson - Anaheim CA, US
Peter Djurovich - 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:

H01L 51/54
C09K 11/06

US Classification:

428690, 428917, 313504, 257E51044, 546 4, 546 10

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.