Patents by Inventor Sung Chul Joo

Sung Chul Joo 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: 20130256711
    Abstract: Substrate based light emitter devices, components, and related methods are disclosed. In some aspects, light emitter components can include a substrate and a plurality of light emitter devices provided over the substrate. Each device can include a surface mount device (SMD) adapted to mount over an external substrate or heat sink. In some aspects, each device of the plurality of devices can include at least one LED chip electrically connected to one or more traces and at least one pair of bottom contacts adapted to mount over a surface of external substrate. The component can further include a continuous layer of encapsulant disposed over each device of the plurality of devices. Multiple devices can be singulated from the component.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Applicant: CREE, INC.
    Inventors: Sung Chul Joo, Peter Scott Andrews, Erin Welch
  • Publication number: 20130193455
    Abstract: Light emitter packages and devices having improved wire bonding and related methods are disclosed. In one embodiment a light emitter package can include at least one light emitting diode (LED) chip electrically connected to an electrical element via a wire bond. The wire bond can be provided at improved wire bonding parameters such as a temperature of approximately 150° C. or less, a bonding time of approximately 100 ms or less, a power of approximately 1700 mW or less, and a force of approximately 100 grams force (gf) or less, or combinations thereof.
    Type: Application
    Filed: September 5, 2012
    Publication date: August 1, 2013
    Inventors: Peter Scott Andrews, Sung Chul Joo
  • Publication number: 20120313115
    Abstract: Light emitter device packages, modules and methods are disclosed having a body and a cavity that can be formed from a single substrate of material. The material can be thermally conductive and/or metallic. A light emitter device package can have at least one isolating layer creating at least a first isolated portion of the body and/or first isolated portion of the cavity. The isolating layer can be formed from the same material as the single substrate which forms the package body and cavity, and can be a layer which is thermally and electrically isolated. A light emitter or light emitter device, such as an LED chip can be mounted upon a surface of the cavity and upon at least a portion of the isolating layer.
    Type: Application
    Filed: February 7, 2012
    Publication date: December 13, 2012
    Inventors: Sung Chul Joo, Christopher P. Hussell
  • Publication number: 20120307481
    Abstract: Packages, systems, and devices for light emitting diodes (LEDs) and related methods are provided. The packages can include a lead frame with an electrically conductive chip carrier comprising an upper surface. An LED can be placed on the upper surface of the electrically conductive chip carrier. A casing can be disposed on the lead frame covering at least a portion of the lead frame. A reflector cavity can be in the casing surrounding the LED. The reflector cavity can have angled side wall portions and angled end wall portions with an angle at which the side wall portions are angled that is different from an angle at which the end wall portions are angled.
    Type: Application
    Filed: May 2, 2012
    Publication date: December 6, 2012
    Inventors: Sung Chul Joo, Christoper P. Hussell
  • Publication number: 20120300491
    Abstract: High-brightness light emitting diode (LED) packages, systems and methods with improved resin filling and high adhesion are provided. In one aspect, a high brightness package for a light emitter (e.g., a LED or LED chip) can include a body and a cavity disposed in the body. The cavity can include at least one cavity wall extending toward an intersection area of the body where the cavity wall intersects a cavity floor. The package can further include at least one electrical element having first and second surfaces, each of the first and second surfaces proximate the intersection area. The first surface can be disposed on a first plane and the second surface can be at least partially disposed on a second plane that is different than the first plane. The body can at least substantially cover the second surface.
    Type: Application
    Filed: January 31, 2012
    Publication date: November 29, 2012
    Inventors: Christopher P. Hussell, Sung Chul Joo
  • Publication number: 20110031865
    Abstract: Packages containing one or more light emitting devices, such as light emitting diodes (LEDs), are disclosed. In one embodiment, LED package can include a thermal element having improved solder reliability to improve heat dissipation capacity of the LED package. LED package can include a molded plastic body having one or more LEDs attached to one or more electrical elements. The LEDs can be connected to an upper surface of the thermal element. The thermal element can include a bottom surface which can extend further away in distance from a body of the LED package than a bottom surface of the electrical element. This configuration can result in an improved connection between the LED package and an external circuitry source, thereby increasing heat transfer ability of the LED package.
    Type: Application
    Filed: June 28, 2010
    Publication date: February 10, 2011
    Inventors: Christopher P. Hussell, Sung Chul Joo, Robert S. Pyles
  • Patent number: D643819
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: August 23, 2011
    Assignee: Cree, Inc.
    Inventors: Sung Chul Joo, Christopher P. Hussell
  • Patent number: D648687
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: November 15, 2011
    Assignee: Cree, Inc.
    Inventors: Sung Chul Joo, Christopher P. Hussell
  • Patent number: D661264
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: June 5, 2012
    Assignee: Cree, Inc.
    Inventors: Sung Chul Joo, Christopher P. Hussell
  • Patent number: D667801
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: September 25, 2012
    Assignee: Cree, Inc.
    Inventors: Sung Chul Joo, Christopher P. Hussell
  • Patent number: D679842
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: April 9, 2013
    Assignee: Cree, Inc.
    Inventors: Sung Chul Joo, Christopher P. Hussell