Bin Ma

US Patent:

6916554, Jul 12, 2005

Filed:

Nov 6, 2002

Appl. No.:

10/288785

Inventors:

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

Assignee:

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

International Classification:

H05B033/14
C09K011/06
C07D211/00

US Classification:

428690, 428917, 313504, 546 4

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 comprises an emissive material having the structure: M may be a metal having an atomic weight greater than 40. Rmay be a substituent having a Hammett value less than about −0. 17, between about −0. 15 and 0. 05, or greater than about 0. 07. Rmay be H or any substituent. A may be a 5 or 6 member heteroaryl ring system. “m” may be at least 1. “n” may be at least zero. (X-Y) may be an ancillary ligand. The emissive material itself is also provided. The emissive material may have improved stability, and may provide a saturated blue emission.

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:

7029765, Apr 18, 2006

Filed:

Apr 22, 2003

Appl. No.:

10/421074

Inventors:

Raymond Kwong - Plainsboro NJ, US
Michael S. Weaver - Princeton NJ, US
Bin Ma - Monroeville PA, US
Jui-Yi Tsai - Monroeville PA, US
Michael Barone - Pittsburgh PA, US
David B. Knowles - Apollo PA, US

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H05B 33/12
C09K 11/06
C07D 215/00

US Classification:

428690, 428917, 428201, 313504, 313505, 257 88, 257E51044, 546 4, 546 10, 430319, 430321

Abstract:

The present invention relates to organic light emitting devices (OLEDs), and more specifically to efficient OLEDs comprising an array of pixels and having reduced pixel shrinkage. The devices of the present invention comprise further relates to materials for use as emissive materials which give reduced shrinkage when incorporated into an OLED.

US Patent:

7087321, Aug 8, 2006

Filed:

Apr 21, 2004

Appl. No.:

10/829011

Inventors:

Raymond Kwong - Plainsboro NJ, US
Michael S. Weaver - Princeton NJ, US
Bin Ma - Monroeville PA, US
Jui-Yi Tsai - Monroeville PA, US
Michael Barone - Pittsburgh PA, US
David B. Knowles - Apollo PA, US

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H01L 51/50
H05B 33/12

US Classification:

428690, 428917, 428201, 313504, 313505, 257 88, 257E51044, 430319, 430321

Abstract:

The present invention relates to organic light emitting devices (OLEDs), and more specifically to efficient OLEDs comprising an array of pixels and having reduced pixel shrinkage. The devices of the present invention comprise further relates to materials for use as emissive materials which give reduced shrinkage when incorporated into an OLED.

US Patent:

7198859, Apr 3, 2007

Filed:

Jul 25, 2003

Appl. No.:

10/626730

Inventors:

Raymond Kwong - Plainsboro NJ, US
Bin Ma - Monroeville PA, US
David B. Knowles - Apollo PA, US

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H01L 51/56
H05B 33/12

US Classification:

428690, 428917, 313504, 313506, 257E51043

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 produces phosphorescent emission when a voltage is applied between the anode and the cathode. An organic enhancement layer disposed between the first organic layer and the cathode is also provided. The organic enhancement layer is in direct contact with the first organic layer. The organic enhancement layer may comprise a material of structure (I):.

US Patent:

7332232, Feb 19, 2008

Filed:

Jun 3, 2004

Appl. No.:

10/859796

Inventors:

Bin Ma - Monroeville PA, US
Robert Walters - Export PA, US
Raymond Kwong - Plainsboro NJ, US
Jason Brooks - Lambertville NJ, US

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H01L 51/54
C09K 11/06

US Classification:

428690, 428917, 313504, 313506, 257E51044, 546 4

Abstract:

An organic light emitting device is provided. The device has an anode, a cathode, and an organic layer disposed between the anode and the cathode. The organic layer comprises an emissive material having a transition metal and two or three bidentate ligands, which may be photoactive ligands. The bidentate photoactive ligands may be bound to the transition metal through a carbon-metal bond and a nitrogen-metal bond to form a cyclometallated ring. The organic layer may have the formula LX-(L)M, wherein X is a linking group that links two or more ligand L and M is a metal.

US Patent:

7429426, Sep 30, 2008

Filed:

Dec 3, 2004

Appl. No.:

11/002188

Inventors:

Cory S. Brown - Monroeville PA, US
David B. Knowles - Apollo PA, US
Raymond Kwong - Plainsboro NJ, US
Robert Walters - Export PA, US
Peter I. Djurovich - Long Beach CA, US
Mark E. Thompson - Anaheim CA, US
Bin Ma - Monroeville PA, US

Assignee:

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

International Classification:

H01L 51/54
C09K 11/06

US Classification:

428690, 428917, 313504, 313506, 257E51044, 546 4, 546 10

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:.

US Patent:

7601436, Oct 13, 2009

Filed:

Jan 10, 2005

Appl. No.:

11/032887

Inventors:

Peter Djurovich - Long Beach CA, US
Jui-Yi Tsai - Monroeville PA, US
Chun Lin - Irwin PA, US
Jason Brooks - Lambertville NJ, US
Bert Alleyne - Monroeville PA, US
Mark E. Thompson - Anaheim Hills CA, US
Peter B. MacKenzie - Murrysville PA, US
Bin Ma - Monroeville PA, US

Assignee:

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

International Classification:

H01L 51/54
C09K 11/06

US Classification:

428690, 428917, 313504, 257 40, 257E51043, 257E51044, 548103, 548108, 546 4

Abstract:

An organic light emitting device having an anode, a cathode and an organic layer disposed between the anode and the cathode is provided. The organic layer may comprise a compound having at least one zwitterionic carbon donor ligand. The organic layer may comprise a carbene compound that includes a triazole ring and has the structure:.