Patents by Inventor Wooh Jae Kim

Wooh Jae Kim 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: 20230307586
    Abstract: Semiconductor packages and more particularly mounting arrangements for semiconductor packages and related methods are disclosed. Mounting arrangements include metal pads on substrates and selectively placed solder material on various portions of the metal pads. Semiconductor packages may be initially positioned on the solder material and on portions of the metal pads. During solder reflow, the solder material may spread along portions of the metal pads that were previously uncovered by the solder material and effectively move the semiconductor packages. Specific arrangements of metal pad and selective solder material patterns may be provided that control directions of such movements during reflow. Resulting mounting positions of semiconductor packages may be provided with spacings that are closer than limits of pick and place equipment used to initially position the semiconductor packages.
    Type: Application
    Filed: March 25, 2022
    Publication date: September 28, 2023
    Inventors: Timothy Ling, Ryan Mohn, David N. Randolph, David Peoples, Wooh Jae Kim
  • Patent number: 8957435
    Abstract: A light emission package includes multiple colored solid state emitters each having a different non-white dominant wavelength in the visible range, and at least one lumiphor arranged to receive emissions from at least one other solid state emitter, with each emitter arranged on or adjacent to a common submount. The at least one other emitter and lumiphor may be arranged in combination to emit white light. Each emitter is independently controllable, permitting color and/or color temperature of a lighting device to be varied during operation of the device. At least one white emitter may be combined with red, green, and blue LEDs.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: February 17, 2015
    Assignee: Cree, Inc.
    Inventors: David Todd Emerson, Wooh Jae Kim, Mark Terrence McClear
  • Patent number: 8740663
    Abstract: A light emitting device package assembly includes a light emitting device package body, and first, second and third white light emitting devices on the package body, each of the first, second and third white light emitting devices emits light when energized having a chromaticity that falls within a respective one of first, second and third non-overlapping chromaticity regions in a two dimensional chromaticity space. The first, second and third chromaticity regions are spaced apart in the two dimensional chromaticity space by respective regions having at least the size of a seven step MacAdam ellipse. Related solid state luminaires and methods are also disclosed.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: June 3, 2014
    Assignee: Cree, Inc.
    Inventors: Wooh Jae Kim, Gregory S. Bibee, Mark McClear, Robert E. Higley, Joshua Markle
  • Patent number: 8339029
    Abstract: A light emitting device package assembly includes a light emitting device package body, and first, second and third white light emitting devices on the package body, each of the first, second and third white light emitting devices emits light when energized having a chromaticity that falls within a respective one of first, second and third non-overlapping chromaticity regions in a two dimensional chromaticity space. The first, second and third chromaticity regions are spaced apart in the two dimensional chromaticity space by respective regions having at least the size of a seven step MacAdam ellipse. Related solid state luminaires and methods are also disclosed.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: December 25, 2012
    Assignee: Cree, Inc.
    Inventors: Wooh Jae Kim, Gregory S. Blbee, Mark McClear, Robert E. Higley, Joshua Markle
  • Publication number: 20100315012
    Abstract: A light emitting device package assembly includes a light emitting device package body, and first, second and third white light emitting devices on the package body, each of the first, second and third white light emitting devices emits light when energized having a chromaticity that falls within a respective one of first, second and third non-overlapping chromaticity regions in a two dimensional chromaticity space. The first, second and third chromaticity regions are spaced apart in the two dimensional chromaticity space by respective regions having at least the size of a seven step MacAdam ellipse. Related solid state luminaires and methods are also disclosed.
    Type: Application
    Filed: April 8, 2010
    Publication date: December 16, 2010
    Inventors: Wooh Jae Kim, Gregory S. Blbee, Mark McClear, Robert E. Higley, Joshua Markle
  • Publication number: 20100270567
    Abstract: A light emission package includes multiple colored solid state emitters each having a different non-white dominant wavelength in the visible range, and at least one lumiphor arranged to receive emissions from at least one other solid state emitter, with each emitter arranged on or adjacent to a common submount. The at least one other emitter and lumiphor may be arranged in combination to emit white light. Each emitter is independently controllable, permitting color and/or color temperature of a lighting device to be varied during operation of the device. At least one white emitter may be combined with red, green, and blue LEDs.
    Type: Application
    Filed: April 28, 2010
    Publication date: October 28, 2010
    Applicant: CREE, INC.
    Inventors: David Todd Emerson, Wooh Jae Kim, Mark Terrence McClear