Patents by Inventor Julia J. Brown

Julia J. Brown has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9379169
    Abstract: OLED displays having a resolution of 300 dpi, 400 dpi, or greater are provided. Devices as disclosed may use one or more transistors, such as metal oxide transistors, which have a leakage current of not more than about 10?15 A/?m. Displays having sub-pixels with a largest dimension on the order of 60 ?m are also provided.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 28, 2016
    Assignee: Universal Display Corporation
    Inventors: Michael Hack, Michael Stuart Weaver, Julia J. Brown, Woo-Young So
  • Publication number: 20160164043
    Abstract: Systems and methods for fabricating an OLED are provided, which include dispensing a substrate material onto a substrate carrier, the substrate carrier being rotated by one or more drums, curing the substrate material to form a substrate, depositing at least one OLED onto the substrate, and separating the substrate from the substrate carrier.
    Type: Application
    Filed: December 3, 2014
    Publication date: June 9, 2016
    Inventors: Ruiqing MA, John FELTS, Jeffrey SILVERNAIL, Zhaoqun ZHOI, Emory KRALL, Julia J. BROWN
  • Publication number: 20160155378
    Abstract: Light emitting devices including sub-pixels having different numbers of emissive layers are provided. At least one sub-pixel of a first color may include a single emissive layer, and at least one sub-pixel of a second color may include multiple emissive layers disposed in a vertical stack. Light emitting devices in which different voltages are applied to each sub-pixel or group of sub-pixels are also provided. In some configurations, the voltage to be applied to a sub-pixel may be selected based upon the number of emissive layers in the sub-pixel.
    Type: Application
    Filed: January 20, 2016
    Publication date: June 2, 2016
    Inventors: Michael Hack, Julia J. Brown, Michael Stuart Weaver, Mauro Premutico
  • Patent number: 9349954
    Abstract: Novel combination of materials and device architectures for organic light emitting devices are provided. In some aspects, specific charge carriers and solid state considerations are features that may result in a device having an unexpectedly long lifetime. In some aspects, emitter purity is a feature that may result in devices having unexpectedly long lifetime. In some aspects, structural and optical considerations are features that may result in a device having an unexpectedly long lifetime. In some aspects, an emissive layer including an organic phosphorescent emissive dopant and an organic carbazole host material results in devices having an unexpectedly long lifetime.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 24, 2016
    Assignee: Universal Display Corporation
    Inventors: Brian D'Andrade, Peter B. Mackenzie, Michael S. Weaver, Julia J. Brown
  • Patent number: 9349955
    Abstract: Methods of fabricating a device having laterally patterned first and second sub-devices, such as subpixels of an OLED, are provided. Exemplary methods may include depositing via organic vapor jet printing (OVJP) a first organic layer of the first sub-device and a first organic layer of the second sub-device. The first organic layer of the first sub-device and the first organic layer of the second sub-device are both the same type of layer, but have different thicknesses. The type of layer is selected from an ETL, an HTL, an HIL, a spacer and a capping layer.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: May 24, 2016
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Siddharth Harikrishna Mohan, Paul E. Burrows, Julia J. Brown
  • Publication number: 20160133838
    Abstract: A method of forming microelectronic systems on a flexible substrate includes depositing (typically sequentially) on a first side of the flexible substrate at least one organic thin film layer, at least one electrode and at least one thin film encapsulation layer over the at least one organic thin film layer and the at least one electrode, wherein depositing the at least one organic thin film layer, depositing the at least one electrode and depositing the at least one thin film encapsulation layer each occur under vacuum and wherein no physical contact of the at least one organic thin film layer or the at least one electrode with another solid material occurs prior to depositing the at least one thin film encapsulation layer.
    Type: Application
    Filed: January 15, 2016
    Publication date: May 12, 2016
    Inventors: Ruiqing Ma, Jeffrey Silvernail, Prashant Mandlik, Julia J. Brown, John Felts
  • Patent number: 9312511
    Abstract: In some embodiments, a first product is provided. The first product may include a substrate, a device having a device footprint disposed over the substrate, and a barrier film disposed over the substrate and substantially along a side of the device footprint. The barrier film may comprise a mixture of a polymeric material and non-polymeric material. The barrier film may have a perpendicular length that is less than or equal to 3.0 mm from the side of the device footprint.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: April 12, 2016
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Prashant Mandlik, Ruiqing Ma, Julia J. Brown
  • Patent number: 9293734
    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 k1 at a point p on the substantially curved surface may be greater than a maximum height of the light extraction block.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 22, 2016
    Assignee: Universal Display Corporation
    Inventors: Peter Levermore, Emory Krall, Jeffrey Silvernail, Kamala Rajan, Julia J. Brown
  • Patent number: 9257665
    Abstract: Light emitting devices including sub-pixels having different numbers of emissive layers are provided. At least one sub-pixel of a first color may include a single emissive layer, and at least one sub-pixel of a second color may include multiple emissive layers disposed in a vertical stack. Light emitting devices in which different voltages are applied to each sub-pixel or group of sub-pixels are also provided. In some configurations, the voltage to be applied to a sub-pixel may be selected based upon the number of emissive layers in the sub-pixel.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 9, 2016
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Michael Hack, Julia J. Brown, Michael Stuart Weaver, Mauro Premutico
  • Patent number: 9252391
    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.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: February 2, 2016
    Assignees: The Trustees of Princeton University, Universal Display Corporation
    Inventors: Prashant Mandlik, Sigurd Wagner, Jeffrey A. Silvernail, Ruiqing Ma, Julia J. Brown, Lin Han
  • Patent number: 9252377
    Abstract: A novel electronic device is reported containing a host comprising an inorganic material with a band gap of less than 4 eV. The use of an inorganic material is advantageous due to its desirable physical properties, including increased stability and charge mobility.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: February 2, 2016
    Assignee: Universal Display Corporation
    Inventors: Chun Lin, Julia J. Brown, Angang Dong
  • Publication number: 20160013412
    Abstract: Methods of fabricating a device having laterally patterned first and second sub-devices, such as subpixels of an OLED, are provided. Exemplary methods may include depositing via organic vapor jet printing (OVJP) a first organic layer of the first sub-device and a first organic layer of the second sub-device. The first organic layer of the first sub-device and the first organic layer of the second sub-device are both the same type of layer, but have different thicknesses. The type of layer is selected from an ETL, an HTL, an HIL, a spacer and a capping layer.
    Type: Application
    Filed: September 23, 2015
    Publication date: January 14, 2016
    Inventors: Siddharth HARIKRISHNA MOHAN, Paul E. BURROWS, Julia J. BROWN
  • Publication number: 20160013449
    Abstract: OLED structures including an internal extraction layer are provided. The internal extraction layer includes a material having a refractive index that is higher than the refractive index of a transparent electrode in the device, and a non-planar interface disposed between the material and the substrate. Devices are also provided that include an external extraction layer having a non-planar surface which, when used in conjunction with an internal extraction layer, provides greatly improved outcoupling of light generated by the device.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 14, 2016
    Inventors: Yue CUI, Deng-ke YANG, Gregory McGraw, Ruiqing Ma, Julia J. Brown
  • Publication number: 20150349032
    Abstract: This disclosure relates to reduced power consumption OLED displays at reduced cost for reduced information content applications, such as wearable displays. Image quality for wearable displays can be different than for high information content smart phone displays and TVs, where the wearable display has an architecture that in includes, for example, an all phosphorescent device and/or material system that may be fabricated at reduced cost. The reduced power consumption can facilitate wireless and solar charging.
    Type: Application
    Filed: January 26, 2015
    Publication date: December 3, 2015
    Inventors: Michael HACK, Julia J. BROWN, Michael Stuart WEAVER, Woo-Young SO
  • Publication number: 20150349034
    Abstract: Systems and techniques are provided that allow for fabrication of full-color OLED displays that include only two colors of emissive regions and four or more sub-pixels within pixels of the device. Mask arrangements for fabricating such devices are also provided.
    Type: Application
    Filed: January 26, 2015
    Publication date: December 3, 2015
    Inventors: Michael HACK, Michael Stuart WEAVER, Julia J. BROWN, Woo-Young SO, Candice H. BROWN
  • Publication number: 20150334808
    Abstract: The device consists of measuring aspects of human activity or emotion and then communicating that information to an adjustable lighting device or electronic display (as part of a phone, tablet, computer etc) such that the color temperature (or luminance) of the display or lamp is adjusted to match the mood of the user e.g. warmer in the evening close to the end of the day, and cooler in the morning for productivity.
    Type: Application
    Filed: December 18, 2014
    Publication date: November 19, 2015
    Inventors: Michael Hack, Ruiqing Ma, Emory Krall, Julia J. Brown
  • Patent number: 9178185
    Abstract: Methods of fabricating a device having laterally patterned first and second sub-devices, such as subpixels of an OLED, are provided. Exemplary methods may include depositing via organic vapor jet printing (OVJP) a first organic layer of the first sub-device and a first organic layer of the second sub-device. The first organic layer of the first sub-device and the first organic layer of the second sub-device are both the same type of layer, but have different thicknesses. The type of layer is selected from an ETL, an HTL, an HIL, a spacer and a capping layer.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: November 3, 2015
    Assignee: Universal Display Corporation
    Inventors: Siddharth Harikrishna Mohan, Paul E. Burrows, Julia J. Brown
  • Patent number: 9170665
    Abstract: Light emitting devices including sub-pixels having different numbers of emissive layers are provided. At least one sub-pixel of a first color may include a single emissive layer, and at least one sub-pixel of a second color may include multiple emissive layers disposed in a vertical stack. Light emitting devices in which different voltages are applied to each sub-pixel or group of sub-pixels are also provided. In some configurations, the voltage to be applied to a sub-pixel may be selected based upon the number of emissive layers in the sub-pixel.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 27, 2015
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Michael Hack, Julia J. Brown, Michael Stuart Weaver, Mauro Premutico
  • Publication number: 20150295197
    Abstract: An OLED device includes, in order, an electron blocking layer, an organic emissive layer, and a hole blocking layer. Its organic emissive layer contains at least four components: an electron transporting compound, a host, a hole transporting compound, and an emitting compound capable of phosphorescence emission at room temperature. The emitting compound has HOMO energy level of 5.2 eV or lower and a LUMO energy level of 2.5 eV or higher.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 15, 2015
    Applicant: Universal Display Corporation
    Inventors: Vadim Adamovich, James Esler, Jason Brooks, Michael S. Weaver, Julia J. Brown
  • Publication number: 20150243905
    Abstract: An organic electroluminescence device utilizes a novel combination comprising one or more biscarbazole derivative compounds as the phosphorescent host material in combination with a green phosphorescent dopant material in the light emitting region of the device, where the biscarbazole derivative compounds are represented by a formula (1A) or (1B) below; where A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3; and the green phosphorescent dopant material is a phosphorescent organometallic complex having a chemical structure represented by LL?L?M wherein M is a metal that forms octa
    Type: Application
    Filed: June 14, 2012
    Publication date: August 27, 2015
    Applicants: Idemitsu Kosan Co., Ltd., Universal Display Corporation
    Inventors: Hitoshi Yamamoto, Michael S. Weaver, Julia J. Brown, Kazuki Nishimura, Toshihiro Iwakuma