Patents by Inventor Thomas Yuan

Thomas Yuan 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: 11791442
    Abstract: An LED package comprising a submount having a top and bottom surface with a plurality of top electrically and thermally conductive elements on its top surface. An LED is included on one of the top elements such that an electrical signal applied to the top elements causes the LED to emit light. The electrically conductive elements also spread heat from the LED across the majority of the submount top surface. A bottom thermally conductive element is included on the bottom surface of said submount and spreads heat from the submount, and a lens is formed directly over the LED. A method for fabricating LED packages comprising providing a submount panel sized to be separated into a plurality of LED package submounts. Top conductive elements are formed on one surface of the submount panel for a plurality of LED packages, and LEDs are attached to the top elements. Lenses are molded over the LEDs and the substrate panel is singulated to separate it into a plurality of LED packages.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: October 17, 2023
    Assignee: CreeLED, Inc.
    Inventors: Bernd Keller, Nicholas Medendorp, Jr., Thomas Yuan
  • Publication number: 20210143302
    Abstract: An LED package comprising a submount having a top and bottom surface with a plurality of top electrically and thermally conductive elements on its top surface. An LED is included on one of the top elements such that an electrical signal applied to the top elements causes the LED to emit light. The electrically conductive elements also spread heat from the LED across the majority of the submount top surface. A bottom thermally conductive element is included on the bottom surface of said submount and spreads heat from the submount, and a lens is formed directly over the LED. A method for fabricating LED packages comprising providing a submount panel sized to be separated into a plurality of LED package submounts. Top conductive elements are formed on one surface of the submount panel for a plurality of LED packages, and LEDs are attached to the top elements. Lenses are molded over the LEDs and the substrate panel is singulated to separate it into a plurality of LED packages.
    Type: Application
    Filed: December 18, 2020
    Publication date: May 13, 2021
    Inventors: Bernd Keller, Nicholas Medendorp, JR., Thomas Yuan
  • Patent number: 10043942
    Abstract: An embodiment of the invention comprises a first III-V semiconductor structure including a first light emitting layer disposed between a first n-type region and a first p-type region, and a second III-V semiconductor structure including a second light emitting layer disposed between a second n-type region and a second p-type region. A first contact is formed on a top surface of the first III-V semiconductor structure. A second contact is formed on a bottom surface of the second III-V semiconductor structure. A bonding structure is disposed between the first and second III-V semiconductor structures.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: August 7, 2018
    Assignee: Luminus Devices, Inc.
    Inventors: Ting Li, Thomas Yuan
  • Patent number: 9793247
    Abstract: An LED component according to the present invention comprising an array of LED chips mounted on a submount with the LED chips capable of emitting light in response to an electrical signal. The array can comprise LED chips emitting at two colors of light wherein the LED component emits light comprising the combination of the two colors of light. A single lens is included over the array of LED chips. The LED chip array can emit light of greater than 800 lumens with a drive current of less than 150 milli-Amps. The LED chip component can also operate at temperatures less than 3000 degrees K. In one embodiment, the LED array is in a substantially circular pattern on the submount.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: October 17, 2017
    Assignees: CREE, INC., KONINKLIJKE PHILIPS ELECTRONICS NV
    Inventors: Thomas Yuan, Bernd Keller, Eric Tarsa, James Ibbetson, Frederick Morgan, Kevin Dowling, Ihor Lys
  • Patent number: 9484329
    Abstract: Solid state lighting components are disclosed having multiple discrete light sources whose light combines to provide the desired emission characteristics. One embodiment of an LED component according to the present invention comprises a rectangular submount. A first group of blue shifted yellow (BSY) LED chips, a second group of BSY LED chips and a group of red LED chips are mounted on the submount. A plurality of contacts is arranged along one of the edges of the submount and accessible from one side of the component for applying electrical signals to the groups of LED chips.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: November 1, 2016
    Assignee: CREE, INC.
    Inventors: Antony P. van de Ven, Gerald Negley, Thomas Yuan, Bernd Keller, Theodore Lowes
  • Patent number: 9076940
    Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: July 7, 2015
    Assignee: Cree, Inc.
    Inventors: Thomas Yuan, Bernd Keller, James Ibbetson, Eric Tarsa, Gerald Negley
  • Publication number: 20150137150
    Abstract: An embodiment of the invention comprises a first III-V semiconductor structure including a first light emitting layer disposed between a first n-type region and a first p-type region, and a second III-V semiconductor structure including a second light emitting layer disposed between a second n-type region and a second p-type region. A first contact is formed on a top surface of the first III-V semiconductor structure. A second contact is formed on a bottom surface of the second III-V semiconductor structure. A bonding structure is disposed between the first and second III-V semiconductor structures.
    Type: Application
    Filed: October 14, 2014
    Publication date: May 21, 2015
    Inventors: Ting Li, Thomas Yuan
  • Patent number: 8698171
    Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: April 15, 2014
    Assignee: Cree, Inc.
    Inventors: Thomas Yuan, Bernd Keller, James Ibbetson, Eric Tarsa, Gerald Negley
  • Publication number: 20120241781
    Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.
    Type: Application
    Filed: June 5, 2012
    Publication date: September 27, 2012
    Inventors: Thomas Yuan, Bernd Keller, James Ibbetson, Eric Tarsa, Gerald Negley
  • Patent number: 8217412
    Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: July 10, 2012
    Assignee: Cree, Inc.
    Inventors: Thomas Yuan, Bernd Keller, James Ibbetson, Eric Tarsa, Gerald Negley
  • Patent number: 7821023
    Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: October 26, 2010
    Assignee: Cree, Inc.
    Inventors: Thomas Yuan, Bernd Keller, James Ibbetson, Eric Tarsa, Gerald Negley
  • Publication number: 20100127283
    Abstract: Solid state lighting components are disclosed having multiple discrete light sources whose light combines to provide the desired emission characteristics. One embodiment of an LED component according to the present invention comprises a rectangular submount. A first group of blue shifted yellow (BSY) LED chips, a second group of BSY LED chips and a group of red LED chips are mounted on the submount. A plurality of contacts is arranged along one of the edges of the submount and accessible from one side of the component for applying electrical signals to the groups of LED chips.
    Type: Application
    Filed: December 2, 2009
    Publication date: May 27, 2010
    Inventors: Antony P. van de Ven, Gerald Negley, Thomas Yuan, Bernd Keller, Ted Lowes
  • Publication number: 20090050907
    Abstract: An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.
    Type: Application
    Filed: May 23, 2008
    Publication date: February 26, 2009
    Inventors: Thomas Yuan, Bernd Keller, James Ibbetson, Eric Tarsa, Gerald Negley
  • Publication number: 20090050908
    Abstract: An LED component according to the present invention comprising an array of LED chips mounted on a submount with the LED chips capable of emitting light in response to an electrical signal. The array can comprise LED chips emitting at two colors of light wherein the LED component emits light comprising the combination of the two colors of light. A single lens is included over the array of LED chips. The LED chip array can emit light of greater than 800 lumens with a drive current of less than 150 milli-Amps. The LED chip component can also operate at temperatures less than 3000 degrees K. In one embodiment, the LED array is in a substantially circular pattern on the submount.
    Type: Application
    Filed: June 5, 2008
    Publication date: February 26, 2009
    Inventors: Thomas Yuan, Bernd Keller, Eric Tarsa, James Ibbetson, Frederick Morgan, Kevin Dowling, Ihor Lys
  • Patent number: 7157744
    Abstract: A package for a light emitting diode (LED) including an electrically insulating substrate layer, a non-conductive layer disposed on the electrically insulating substrate layer, and a reflector layer disposed on the non-conductive layer. The electrically insulating layer includes metallized portions for coupling a light emitting diode thereto.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: January 2, 2007
    Assignee: M/A-COM, Inc.
    Inventors: William J. Palmteer, Thomas Yuan, Richard Koba
  • Publication number: 20050093116
    Abstract: A package for a light emitting diode (LED) including an electrically insulating substrate layer, a non-conductive layer disposed on the electrically insulating substrate layer, and a reflector layer disposed on the non-conductive layer. The electrically insulating layer includes metallized portions for coupling a light emitting diode thereto.
    Type: Application
    Filed: October 29, 2003
    Publication date: May 5, 2005
    Applicant: M/A-COM, INC.
    Inventors: William Palmteer, Thomas Yuan, Richard Koba
  • Patent number: 6854998
    Abstract: A wiring block and cover shell arrangement for electric connector in which the wiring block has two smoothly arched bearing walls perpendicularly extended from the front surface of the base thereof and equally spaced from the center of the base at two sides, two sets of parallel crevices symmetrically formed in the bearing walls and respectively cut through the height of the bearing walls to the base, and two sets of slots respectively cut through the height of the bearing walls and front and back sides of the base across the crevices for accommodating a respective wire clamp to fasten the insulated wires of the twisted pairs of a cable, maintaining an equal delay skew at each twisted pair of the cable.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: February 15, 2005
    Assignee: Lorom Industrial Co., Ltd.
    Inventor: Thomas Yuan
  • Publication number: 20040127088
    Abstract: A wiring block and cover shell arrangement for electric connector in which the wiring block has two smoothly arched bearing walls perpendicularly extended from the front surface of the base thereof and equally spaced from the center of the base at two sides, two sets of parallel crevices symmetrically formed in the bearing walls and respectively cut through the height of the bearing walls to the base, and two sets of slots respectively cut through the height of the bearing walls and front and back sides of the base across the crevices for accommodating a respective wire clamp to fasten the insulated wires of the twisted pairs of a cable, maintaining an equal delay skew at each twisted pair of the cable.
    Type: Application
    Filed: June 24, 2003
    Publication date: July 1, 2004
    Applicant: LOROM INDUSTRIAL CO., LTD.
    Inventor: Thomas Yuan
  • Patent number: 4925609
    Abstract: An oxygen-sensing element particularly for use in the exhaust stream of an internal combustion engine. In one embodiment, the sensing element may be a tubular solid electrolyte body with a transverse web forming a relatively shallow recess at one end of the body and a relatively deep tube at the other. Separate electrodes are formed on the surface of the body proximate the recess and on both opposing sides of the web. A porous plug disposed in the recess covers one of the electrodes. When the electrode on the surface of the body is exposed to the exhaust stream of a fuel-rich air-fuel mixture, the EMF across that electrode and the electrode on the underside of the web, which is exposed to fresh air, is indicative of the oxygen content of the exhaust stream.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: May 15, 1990
    Assignee: Stemcor Corporation
    Inventors: Hisao Yamada, Thomas Yuan