Julia C Brown

US Patent:

6803720, Oct 12, 2004

Filed:

Dec 15, 2000

Appl. No.:

09/738429

Inventors:

Raymond C. Kwong - Plainsboro NJ
Michael G. Hack - Pennington NJ
Theodore Zhou - Princeton NJ
Julia J. Brown - Princeton NJ
Tan D. Ngo - Levittown PA

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H05B 3300

US Classification:

313504, 313506

Abstract:

A highly stable and efficient organic light emitting device with a phosphorescent-doped mixed layer architecture comprises an anode layer; hole injecting layer over the anode layer; a mixed layer over the hole injecting layer, the mixed layer comprising an organic small molecule hole transporting material, an organic small molecule electron transporting material and a phosphorescent dopant; and a cathode layer over the mixed layer. An electron transporting layer may be present between the mixed layer and the cathode layer and a hole transporting layer may be present between the hole injecting layer and the mixed layer.

US Patent:

7683536, Mar 23, 2010

Filed:

Nov 16, 2005

Appl. No.:

11/274091

Inventors:

Stephen Forrest - Princeton NJ, US
Julia J. Brown - Yardley PA, US
Mark E. Thompson - Anaheim Hills CA, US

Assignee:

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

International Classification:

H05B 33/00
H01L 51/50

US Classification:

313506, 313917

Abstract:

The present invention relates to OLEDs utilizing direct injection to the triplet state. The present invention also relates to OLEDs utilizing resonant injection and/or stepped energy levels.

US Patent:

7745986, Jun 29, 2010

Filed:

Feb 9, 2004

Appl. No.:

10/582643

Inventors:

Hironori Ito - Nagoya, JP
Naotaka Koide - Nagoya, JP
Michael Hack - Lambertville NJ, US
Julia Brown - Yardley PA, US

Assignee:

Universal Display Corporation - Ewing NJ
Toyota Industries Corporation - Aichi

International Classification:

H01J 1/62

US Classification:

313504, 313512

Abstract:

Disclosed is a conventional organic light emitting diode (OLED) having one reflective electrode in combination with at least one transparent OLED in stacked configuration functioning as backlighting in a transflective display apparatus such as a liquid crystal display (LCD). Preferably, at least two transparent OLEDs are arranged in a stacked configuration with one conventional OLED, each of the three OLEDs emitting light of a different bandwidth. The reflective electrode located behind the backlight also serves as a reflecting plate for the display. This arrangement enhances reflectivity and permits color sequencing in the transmissive mode, allowing all the components of a full color display (i. e. red, green, blue) to emit through the same pixel without the need for a color filter.

US Patent:

8564001, Oct 22, 2013

Filed:

May 18, 2011

Appl. No.:

13/110298

Inventors:

Michael Hack - Princeton NJ, US
Julia J. Brown - Yardley PA, US
Peter Levermore - Lambertville NJ, US
Michael S. Weaver - Princeton NJ, US

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H01L 33/50
H01L 21/00

US Classification:

257 98, 257102, 257103, 257 40, 257E33061, 438 82, 438 99, 438 22, 438 25

Abstract:

A first device that may include one or more organic light emitting devices. At least 65 percent of the photons emitted by the organic light emitting devices are emitted from an organic phosphorescent emitting material. An outcoupling enhancer is optically coupled to each organic light emitting device. In one embodiment, the light panel is not attached to a heat management structure. In one embodiment, the light panel is capable of exhibiting less than a 10 degree C. rise in junction temperature when operated at a luminous emittance of 9,000 lm/mwithout the use of heat management structures, regardless of whether the light panel is actually attached to a heat management structure or not. The light panel may be attached to a heat management structure. The light panel may be not attached to a heat management structure.

US Patent:

8592253, Nov 26, 2013

Filed:

May 5, 2009

Appl. No.:

12/990860

Inventors:

Prashant Mandlik - Princeton NJ, US
Sigurd Wagner - Princeton NJ, US
Jeffrey A. Silvernail - Yardley PA, US
Ruiqing Ma - Morristown NJ, US
Julia J. Brown - Yardley PA, US
Lin Han - Princeton NJ, US

Assignee:

The Trustees of Princeton University - Princeton NJ
Universal Display Corporation - Ewing NJ

International Classification:

H01L 21/44
H01L 21/48

US Classification:

438106, 438126

Abstract:

A method for protecting an electronic device comprising an organic device body. The method involves the use of a hybrid layer deposited by chemical vapor deposition. The hybrid layer comprises a mixture of a polymeric material and a non-polymeric material, wherein the weight ratio of polymeric to non-polymeric material is in the range of 95:5 to 5:95, and wherein the polymeric material and the non-polymeric material are created from the same source of precursor material. Also disclosed are techniques for impeding the lateral diffusion of environmental contaminants.

US Patent:

20060251921, Nov 9, 2006

Filed:

May 6, 2005

Appl. No.:

11/123155

Inventors:

Stephen Forrest - Princeton NJ, US
Julia Brown - Yardley PA, US
Mark Thompson - Anaheim Hills CA, US

International Classification:

H01L 51/56
H05B 33/12

US Classification:

428690000, 428917000, 313504000, 313506000, 257E51044

Abstract:

The present invention relates to OLEDs utilizing direct injection to the triplet state. The present invention also relates to OLEDs utilizing resonant injection and/or stepped energy levels.

US Patent:

20100090620, Apr 15, 2010

Filed:

Sep 23, 2009

Appl. No.:

12/565115

Inventors:

Michael HACK - Princeton NJ, US
Julia J. BROWN - Yardley PA, US
Michael S. WEAVER - Princeton NJ, US
Brian D'ANDRADE - Westampton NJ, US

Assignee:

UNIVERSAL DISPLAY CORPORATION - Ewing NJ

International Classification:

H05B 37/00
H01L 51/52

US Classification:

315312, 257 88, 257 98, 257 40, 257E51022

Abstract:

A device that may be used as a multi-color pixel is provided. The device has a first organic light emitting device, a second organic light emitting device, a third organic light emitting device, and a fourth organic light emitting device. The device may be a pixel of a display having four sub-pixels. The first device may emit red light, the second device may emit green light, the third device may emit light blue light and the fourth device may emit deep blue light.

US Patent:

20120161610, Jun 28, 2012

Filed:

Dec 23, 2010

Appl. No.:

12/978213

Inventors:

Peter Levermore - Lambertville NJ, US
Emory Krall - Philadelphia PA, US
Jeffrey Silvernail - Yardley PA, US
Kamala Rajan - Newtown PA, US
Julia J. Brown - Yardley PA, US

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H01J 1/62
F21V 5/00
H01J 9/24

US Classification:

313504, 445 24, 362330

Abstract:

Light extraction blocks, and OLED lighting panels using light extraction blocks, are described, in which the light extraction blocks include various curved shapes that provide improved light extraction properties compared to parallel emissive surface, and a thinner form factor and better light extraction than a hemisphere. Lighting systems described herein may include a light source with an OLED panel. A light extraction block with a three-dimensional light emitting surface may be optically coupled to the light source. The three-dimensional light emitting surface of the block may includes a substantially curved surface, with further characteristics related to the curvature of the surface at given points. A first radius of curvature corresponding to a maximum principal curvature kat a point p on the substantially curved surface may be greater than a maximum height of the light extraction block. A maximum height of the light extraction block may be less than 50% of a maximum width of the light extraction block. Surfaces with cross sections made up of line segments and inflection points may also be fit to approximated curves for calculating the radius of curvature.