Patents by Inventor David T. Emerson

David T. Emerson 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: 8564000
    Abstract: Light emitting devices for light emitting diodes (LEDs) are disclosed. In one embodiment a light emitting device can include a substrate, one or more LEDs disposed over the substrate, and the LEDs can include electrical connectors for connecting to an electrical element. A light emitting device can further include a retention material disposed over the substrate and the retention material can be disposed over at least a portion of the electrical connectors. The LEDs can be connected in a pattern that is non-linear.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: October 22, 2013
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Peter Scott Andrews, Jesse Colin Reiherzer, David T. Emerson
  • Patent number: 8487337
    Abstract: A light emitting diode is disclosed. The diode includes a package support and a semiconductor chip on the package support, with the chip including an active region that emits light in the visible portion of the spectrum. Metal contacts are in electrical communication with the chip on the package. A substantially transparent encapsulant covers the chip in the package. A phosphor in the encapsulant emits a frequency in the visible spectrum different from the frequency emitted by the chip and in response to the wavelength emitted by the chip. A display element is also disclosed that combines the light emitting diode and a planar display element. The combination includes a substantially planar display element with the light emitting diode positioned on the perimeter of the display element and with the package support directing the output of the diode substantially parallel to the plane of the display element.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: July 16, 2013
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Michael J. Bergmann, Brian T. Collins, David T. Emerson
  • Publication number: 20130141920
    Abstract: Light emitter devices and methods with reduced dimensions and improved light output are provided. In one embodiment, a light emitter device includes a submount having an area of approximately 6 square millimeters (mm2) or less. The device can further include a light emitting chip on the submount and a lens disposed over the light emitting chip and positioned on the submount. The device can be operable for emitting light at approximately 100 lumens or higher.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 6, 2013
    Applicant: CREE, INC.
    Inventors: David T. Emerson, Justin Lydon, Raymond Rosado, Jeffrey C. Britt
  • Patent number: 8425271
    Abstract: A method of forming an LED lamp with a desired distribution of phosphor is disclosed. The method includes the steps of mixing a plurality of phosphor particles in an uncured polymer resin for which the viscosity can be controlled in response to temperature to form a substantially uniform suspension of the phosphor particles in the resin. The uncured resin is then placed into a defined position adjacent an LED chip and the temperature of the resin is increased to correspondingly decrease its viscosity but to less than the temperature at which the resin would cure unreasonably quickly. The phosphor particles are encouraged to settle in the lowered-viscosity resin to a desired position with respect to the LED chip, and the temperature of the resin is thereafter increased to the point at which it will cured and solidify.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: April 23, 2013
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Michael J. Bergmann, Brian T. Collins, David T. Emerson
  • Patent number: 8409972
    Abstract: A method of forming electronic device precursors and devices with reduced cracking in relevant layers is disclosed along with resulting structures. The method includes the steps of growing a transition layer of undoped Group III nitride on a substrate that is other than a Group III nitride, growing an active structure of Group III nitride on the undoped layer, and removing the substrate from the undoped layer.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: April 2, 2013
    Assignee: Cree, Inc.
    Inventors: Michael J. Bergmann, Daniel C. Driscoll, David T. Emerson
  • Patent number: 8390022
    Abstract: A light emitting diode is disclosed. The diode includes a package support and a semiconductor chip on the package support, with the chip including an active region that emits light in the visible portion of the spectrum. Metal contacts are in electrical communication with the chip on the package. A substantially transparent encapsulant covers the chip in the package. A phosphor in the encapsulant emits a frequency in the visible spectrum different from the frequency emitted by the chip and in response to the wavelength emitted by the chip. A display element is also disclosed that combines the light emitting diode and a planar display element. The combination includes a substantially planar display element with the light emitting diode positioned on the perimeter of the display element and with the package support directing the output of the diode substantially parallel to the plane of the display element.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: March 5, 2013
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Michael J. Bergmann, Brian T. Collins, David T. Emerson
  • Patent number: 8362512
    Abstract: A light emitting diode is disclosed. The diode includes a package support and a semiconductor chip on the package support, with the chip including an active region that emits light in the visible portion of the spectrum. Metal contacts are in electrical communication with the chip on the package. A substantially transparent encapsulant covers the chip in the package. A phosphor in the encapsulant emits a frequency in the visible spectrum different from the frequency emitted by the chip and in response to the wavelength emitted by the chip. A display element is also disclosed that combines the light emitting diode and a planar display element. The combination includes a substantially planar display element with the light emitting diode positioned on the perimeter of the display element and with the package support directing the output of the diode substantially parallel to the plane of the display element.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: January 29, 2013
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Michael J. Bergmann, Brian T. Collins, David T. Emerson
  • Publication number: 20120223632
    Abstract: Remote component devices, systems, and methods are disclosed. In one aspect, remote component devices, systems, and methods can include a body for lockably securing the remote component to a housing. Devices, systems, and methods can also include one or more light emitting devices disposed over the body. An optical material can be remotely located at least a first distance away from the one or more light emitting devices. Remote component devices, systems, and methods disclosed herein can be used as replacements and/or equivalent light products for standard filament light bulbs and compact fluorescent lamp (CFL) bulbs.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 6, 2012
    Inventors: Christopher P. Hussell, Peter Scott Andrews, Florin A. Tudorica, David T. Emerson
  • Publication number: 20120206039
    Abstract: A method of manufacturing an LED lamp is disclosed. The method includes admixing an uncured curable liquid resin and a phosphor, dispensing the uncured admixture on an LED chip, centrifuging the chip and the admixture to disperse the phosphor particles in the uncured resin, and curing the resin while the phosphor particles remain distributed.
    Type: Application
    Filed: March 23, 2012
    Publication date: August 16, 2012
    Inventors: CHRISTOPHER P. HUSSELL, David T. Emerson
  • Publication number: 20120199852
    Abstract: An LED component includes, according to a first embodiment, a monolithic substrate, an array of LED chips disposed on a surface of the substrate, and an optical lens overlying the LED chips and having a lens base attached to the substrate, where the LED chips are positioned to provide a peak emission shifted from a perpendicular centerline of the lens base. The LED component includes, according to a second embodiment, a monolithic substrate, an array of LED chips disposed on a surface of the substrate, and an array of optical lenses, each optical lens overlying at least one of the LED chips and having a lens base attached to the substrate, where at least one of the LED chips is positioned to provide a peak emission shifted from a perpendicular centerline of the respective lens base.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 9, 2012
    Applicant: CREE, INC.
    Inventors: Theodore D. Lowes, Eric J. Tarsa, Bernd P. Keller, David T. Emerson
  • Patent number: 8212262
    Abstract: A light emitting diode is disclosed that includes a transparent substrate with an absorption coefficient less than 4 per centimeter, epitaxial layers having absorption coefficients of less than 500 per centimeter in the layers other than the active emission layers, an ohmic contact and metallization layer on at least one of the epitaxial layers, with the ohmic contact and metallization layer having a transmission of at least about 80 percent, and bond pads with reflectivity greater than at least about 70 percent.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: July 3, 2012
    Assignee: Cree, Inc.
    Inventors: David T. Emerson, Michael J. Bergmann, Kevin W. Haberen
  • Publication number: 20120153317
    Abstract: Light emitting diode (LED) devices, systems, and methods are disclosed. In one aspect, an illumination panel can be configured to provide backlighting for a liquid crystal display (LCD) panel. The illumination panel can include one or more LEDs arranged in an array. The one or more LEDs can be attached using metal-to-metal die attach methods over an illumination panel, or attached within packages disposed over the illumination panel. In one aspect, the one or more LEDs can be attached using robust metal-to-metal die attach techniques and/or materials disclosed herein.
    Type: Application
    Filed: January 21, 2011
    Publication date: June 21, 2012
    Inventors: David T. Emerson, Michael J. Bergmann, Christopher P. Hussell
  • Publication number: 20120126255
    Abstract: Light emitting devices and methods are disclosed. In one embodiment a light emitting device can include a substrate, one or more light emitting diodes (LEDs) disposed over the substrate, and the LEDs can include electrical connectors for connecting to an electrical element. A light emitting device can further include a retention material disposed over the substrate and the retention material can be disposed over at least a portion of the electrical connectors. In one aspect, a method for making a light emitting device is disclosed. The method can include providing a substrate with one or more LEDs comprising electrical connectors. The method can further include providing a retention material on at least a portion of the substrate wherein the retention material is disposed over at least a portion of the electrical connectors.
    Type: Application
    Filed: February 16, 2011
    Publication date: May 24, 2012
    Inventors: Christopher P. Hussell, Peter Scott Andrews, Jesse Colin Reiherzer, David T. Emerson
  • Publication number: 20120127720
    Abstract: Light emitting devices and methods such as light emitting diodes (LEDs) are disclosed for use in higher voltage applications. Variable arrangements of LEDs are disclosed herein. Arrangements can include one or more LED chips connected in series, parallel, and/or a combination thereof. LED chips can be disposed in a package body having at least one thermal element and one or more electrical components.
    Type: Application
    Filed: September 8, 2011
    Publication date: May 24, 2012
    Inventors: Christopher P. Hussell, David T. Emerson, Jeffrey C. Britt
  • Publication number: 20120126257
    Abstract: Light emitting devices and methods are disclosed. In one embodiment a light emitting device can include a substrate and a plurality of light emitting diodes (LEDs) disposed over the substrate in patterned arrays. The arrays can include one or more patterns of LEDs. A light emitting device can further include a retention material disposed about the array of LEDs. In one aspect, the retention material can be dispensed.
    Type: Application
    Filed: May 10, 2011
    Publication date: May 24, 2012
    Inventors: Jesse Colin Reiherzer, Christopher P. Hussell, Peter Scott Andrews, David T. Emerson
  • Publication number: 20120104428
    Abstract: A light emitting diode is disclosed. The diode includes a package support and a semiconductor chip on the package support, with the chip including an active region that emits light in the visible portion of the spectrum. Metal contacts are in electrical communication with the chip on the package. A substantially transparent encapsulant covers the chip in the package. A phosphor in the encapsulant emits a frequency in the visible spectrum different from the frequency emitted by the chip and in response to the wavelength emitted by the chip. A display element is also disclosed that combines the light emitting diode and a planar display element. The combination includes a substantially planar display element with the light emitting diode positioned on the perimeter of the display element and with the package support directing the output of the diode substantially parallel to the plane of the display element.
    Type: Application
    Filed: January 10, 2012
    Publication date: May 3, 2012
    Inventors: Christopher P. Hussell, Michael J. Bergmann, Brian T. Collins, David T. Emerson
  • Patent number: 8167674
    Abstract: A method of manufacturing an LED lamp is disclosed. The method includes admixing an uncured curable liquid resin and a phosphor, dispensing the uncured admixture on an LED chip, centrifuging the chip and the admixture to disperse the phosphor particles in the uncured resin, and curing the resin while the phosphor particles remain distributed.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: May 1, 2012
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, David T. Emerson
  • Patent number: D660257
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: May 22, 2012
    Assignee: Cree, Inc.
    Inventors: Peter Scott Andrews, Raymond Rosado, Michael P. Laughner, David T. Emerson, Jeffrey C. Britt
  • Patent number: D667803
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: September 25, 2012
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Peter Scott Andrews, Jesse Colin Reiherzer, David T. Emerson
  • Patent number: D676395
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: February 19, 2013
    Assignee: Cree, Inc.
    Inventors: Christopher P. Hussell, Peter Scott Andrews, Jesse Colin Reiherzer, David T. Emerson