Patents by Inventor William W. So

William W. So 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).

  • Publication number: 20220069169
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Application
    Filed: September 9, 2021
    Publication date: March 3, 2022
    Inventors: Frank T. SHUM, William W. So, Steven D. Lester
  • Patent number: 11133440
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: September 28, 2021
    Assignee: BRIDGELUX, INC.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20210020809
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Application
    Filed: August 6, 2020
    Publication date: January 21, 2021
    Inventors: Frank T. SHUM, William W. SO, Steven D. LESTER
  • Patent number: 10741726
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: August 11, 2020
    Assignee: BRIDGELUX INC.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20190305189
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Application
    Filed: January 28, 2019
    Publication date: October 3, 2019
    Inventors: Frank T. SHUM, William W. SO, Steven D. LESTER
  • Patent number: 10199543
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: February 5, 2019
    Assignee: BRIDGELUX, INC.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20170317239
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Application
    Filed: March 9, 2017
    Publication date: November 2, 2017
    Inventors: Frank T. SHUM, William W. SO, Steven D. LESTER
  • Patent number: 9627589
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: April 18, 2017
    Assignee: BRIDGELUX, INC.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20160247975
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Application
    Filed: April 29, 2016
    Publication date: August 25, 2016
    Inventors: Frank T. SHUM, William W. SO, Steven D. LESTER
  • Patent number: 9356194
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: May 31, 2016
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20150228860
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Inventors: Frank T. SHUM, William W. SO, Steven D. LESTER
  • Patent number: 9105815
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Grant
    Filed: November 11, 2012
    Date of Patent: August 11, 2015
    Assignee: BRIDGELUX, INC.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Patent number: 9099613
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: August 4, 2015
    Assignee: BRIDGELUX, INC.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20140346554
    Abstract: Aspects include Light Emitting Diodes that have a GaN-based light emitting region and a metallic electrode. The metallic electrode can be physically separated from the GaN-based light emitted region by a layer of porous dielectric, which provides a reflecting region between at least a portion of the metallic electrode and the GaN-based light emitting region.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Patent number: 8309972
    Abstract: Aspects include electrodes that provide specified reflectivity attributes for light generated from an active region of a Light Emitting Diode (LED). LEDs that incorporate such electrode aspects. Other aspects include methods for forming such electrodes, LEDs including such electrodes, and structures including such LEDs.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: November 13, 2012
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20120235195
    Abstract: Aspects include electrodes that provide specified reflectivity attributes for light generated from an active region of a Light Emitting Diode (LED). LEDs that incorporate such electrode aspects. Other aspects include methods for forming such electrodes, LEDs including such electrodes, and structures including such LEDs.
    Type: Application
    Filed: January 25, 2012
    Publication date: September 20, 2012
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Patent number: 8124433
    Abstract: An electrode structure is disclosed for enhancing the brightness and/or efficiency of an LED. The electrode structure can have a metal electrode and an optically transmissive thick dielectric material formed intermediate the electrode and a light emitting semiconductor material. The electrode and the thick dielectric cooperate to reflect light from the semiconductor material back into the semiconductor so as to enhance the likelihood of the light ultimately being transmitted from the semiconductor material. Such LED can have enhanced utility and can be suitable for uses such as general illumination.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: February 28, 2012
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven B. Lester
  • Patent number: 8115226
    Abstract: An electrode structure is disclosed for enhancing the brightness and/or efficiency of an LED. The electrode structure can have a metal electrode and an dielectric material formed intermediate the electrode and a light emitting semiconductor material. Electrical continuity between the semiconductor material and the metal electrode is provided by an optically transmissive ohmic contact layer, such as a layer of Indium Tin Oxide. The metal electrode thus can be physically separated from the semiconductor material by one or more of the dielectric material and the ohmic contact layer. The dielectric layer can increase total internal reflection of light at the interface between the semiconductor and the dielectric layer, which can reduce absorption of light by the electrode. Such LED can have enhanced utility and can be suitable for uses such as general illumination.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: February 14, 2012
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Patent number: 8114690
    Abstract: Aspects concerning a method of making electrical contact to a region of semiconductor in which one or more LEDs are formed include that a dielectric region can be formed on a p region of the semiconductor, and that a metallic electrode can be formed on (at least partially on) the region of dielectric material. A transparent layer of a material such as Indium Tin Oxide can be used to make ohmic contact between the semiconductor and the metallic electrode, as the metallic electrode is separated from physical contact with the semiconductor by one or more of the dielectric material and the transparent ohmic contact layer (e.g., ITO layer). The dielectric material can enhance total internal reflection of light and reduce an amount of light that is absorbed by the metallic electrode.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: February 14, 2012
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Patent number: 8026524
    Abstract: Semiconductor devices in which one or more LEDs are formed include a dielectric region formed on a n/p region of the semiconductor, and that a metallic electrode can be formed on (at least partially on) the region of dielectric material. A transparent layer of a material such as Indium Tin Oxide can be used to make ohmic contact between the semiconductor and the metallic electrode, as the metallic electrode is separated from physical contact with the semiconductor by one or more of the dielectric material and the transparent ohmic contact layer (e.g., ITO layer). The dielectric material can enhance total internal reflection of light and reduce an amount of light that is absorbed by the metallic electrode.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: September 27, 2011
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester