Patents by Inventor W. So

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).

  • Patent number: 7897992
    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: June 29, 2009
    Date of Patent: March 1, 2011
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20110024782
    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: Application
    Filed: September 22, 2010
    Publication date: February 3, 2011
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20110008918
    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: Application
    Filed: September 22, 2010
    Publication date: January 13, 2011
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20110006332
    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: Application
    Filed: September 22, 2010
    Publication date: January 13, 2011
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Patent number: 7778512
    Abstract: A light-pipe array system is provided. The system comprises a light projector that projects light, and a light-pipe array. The light-pipe array comprises a plurality of light-pipes. Each light-pipe comprises a dielectric transparent to the light, and an electrically conductive light barrier layer surrounding the dielectric. The barrier layer guides the light from an entrance of the dielectric surrounded by the barrier layer to an exit of the dielectric surrounded by the barrier layer. Each light pipe also comprises a light-receiving element that increases throughput of the guided light transmitted within the barrier layer via the dielectric. In one embodiment, the light-receiving element comprises an electrical conductor positioned along a central longitudinal axis of the dielectric. In another embodiment, the light-receiving element alternatively comprises a focusing element.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: August 17, 2010
    Assignee: Scenterra, Inc.
    Inventor: Daniel W. So
  • Publication number: 20100133575
    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: Application
    Filed: February 4, 2010
    Publication date: June 3, 2010
    Applicant: BRIDGELUX, INC.
    Inventors: Frank T. Shum, William W. So, Steven B. Lester
  • Patent number: 7642183
    Abstract: A high power, high luminous flux light emitting diode (LED) comprises a substrate, a light-emitting structure, a first electrode and a second electrode. The LED has a top surface layout design in which the first electrode has a number of legs extending in one direction, and the second electrode has a number of legs extending in the opposite direction. At least portions of the legs of the first electrode are interspersed with and spaced apart from portions of the legs of the second electrode. This provides a configuration that enhances current spreading along the length of the legs of both electrodes.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: January 5, 2010
    Assignees: Dalian Meiming
    Inventors: Yongsheng Zhao, William W. So, Kevin Y. Ma, Chyi S. Chern, Heng Liu, Eugene J. Ruddy
  • Publication number: 20090261373
    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: Application
    Filed: June 29, 2009
    Publication date: October 22, 2009
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20090248591
    Abstract: A process to create a fungible global standard for diamonds and gemstones. The process involves grouping diamonds in an investment standard according to their gemological, proportional, optical and light behavior characteristics. Diamonds that conform to the investment grade standard are interchangeable within a specific size range according to an equivalent monetary bundling process. Diamonds subjected to the standard conform to a holistic set of gemological, proportional, optical and light characteristic requirements that enables diamonds to be classified into a extraordinarily homogeneous, visually indistinguishable and highly fungible group which can be used to create baskets of diamonds to form an index/benchmark for diamond pricing, financial instruments, and a standard that can be used for certifying diamonds as investment grade to insure quality.
    Type: Application
    Filed: March 27, 2009
    Publication date: October 1, 2009
    Applicant: GEMSHARES LLC
    Inventors: Victor David Feldman, Sharon Karsten, Daniel Gramza, David W. So, Andrew J. Feldman
  • Patent number: 7573074
    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: May 19, 2006
    Date of Patent: August 11, 2009
    Assignee: Bridgelux, Inc.
    Inventors: Frank T. Shum, William W. So, Steven D. Lester
  • Publication number: 20090059356
    Abstract: A light-pipe array system is provided. The system comprises a light projector that projects light, and a light-pipe array. The light-pipe array comprises a plurality of light-pipes. Each light-pipe comprises a dielectric transparent to the light, and an electrically conductive light barrier layer surrounding the dielectric. The barrier layer guides the light from an entrance of the dielectric surrounded by the barrier layer to an exit of the dielectric surrounded by the barrier layer. Each light pipe also comprises a light-receiving element that increases throughput of the guided light transmitted within the barrier layer via the dielectric. In one embodiment, the light-receiving element comprises an electrical conductor positioned along a central longitudinal axis of the dielectric. In another embodiment, the light-receiving element alternatively comprises a focusing element.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 5, 2009
    Inventor: Daniel W. So
  • Patent number: 7288873
    Abstract: A device for emission of high frequency signals is provided. The emission device is capable of emission of signals in the Gigahertz (GHz) and Terahertz (THz) range. The device may utilize, for example, a cantilever comprising a material that is capable of altering its electrical properties when flexed.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: October 30, 2007
    Assignee: Scenterra, Inc.
    Inventors: Kenneth E. Salsman, Daniel W. So
  • Patent number: 7280078
    Abstract: A sensor that senses incident RF signals is provided. The sensor is capable of sensing signals in the Gigahertz (GHz) and Terahertz (THz) range. The sensor may utilize one or more cantilevers, an interferometer, or may be formed in a box-type configuration.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: October 9, 2007
    Assignee: Scenterra, Inc.
    Inventors: Kenneth E. Salsman, Daniel W. So
  • Patent number: 7193245
    Abstract: A high power, high luminous flux light emitting diode (LED) comprises a substrate, a light-emitting structure, a first electrode and a second electrode. The LED has a top surface layout design in which the first electrode has a number of legs extending in one direction, and the second electrode has a number of legs extending in the opposite direction. At least portions of the legs of the first electrode are interspersed with and spaced apart from portions of the legs of the second electrode. This provides a configuration that enhances current spreading along the length of the legs of both electrodes.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: March 20, 2007
    Assignee: Lumei Optoelectronics Corporation
    Inventors: Yongsheng Zhao, William W. So, Kevin Y. Ma, Chyi S. Chern, Heng Liu, Eugene J. Ruddy
  • Patent number: 6973236
    Abstract: A tapered waveguide improves insertion loss occurring at the slab/waveguide interface of an optical array waveguide grating (AWG). The tapered waveguide has two segments. The first segment decreases from a first thickness, nearest the slab of the AWG to a second thickness moving away from the slab. The second segment has a substantially constant or uniform thickness equal to the second thickness of the first segment. The second segment may also have a swallowtail shape comprising a forked end having two sidewalls tapered back towards the first segment. Light that would otherwise be lost at the slab/waveguide interface is instead captured by the tapered waveguide which laterally channels the light back into the waveguides thus mitigating insertion loss.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: December 6, 2005
    Assignee: Intel Corporation
    Inventors: Daniel W. So, Chan H. Yoo
  • Publication number: 20050214794
    Abstract: The present invention relates to a nucleic acid sequence linked to Alström syndrome, variants of that nucleic acid sequence, the protein produced by that nucleic acid sequence and screening methods for testing individuals to determine if they are carriers of Alström syndrome.
    Type: Application
    Filed: October 20, 2004
    Publication date: September 29, 2005
    Inventors: Gayle Collin, Jan Marshall, Mitchell Martin, Juergen Naggert, Patsy Nishina, W. So
  • Patent number: D521896
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: May 30, 2006
    Inventor: David W. So
  • Patent number: D522400
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: June 6, 2006
    Inventor: David W. So
  • Patent number: D534831
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: January 9, 2007
    Inventor: David W. So
  • Patent number: D550584
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: September 11, 2007
    Inventor: David W. So