Patents by Inventor Hee Tak OH

Hee Tak OH 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: 9786827
    Abstract: A light-emitting diode package includes a package body. The package body includes an upper insulation substrate including upper conductive patterns, a lower insulation substrate including lower conductive patterns, and middle conductive patterns disposed between the upper insulation substrate and the lower insulation substrate. The package body also includes an upper via disposed in the upper insulation substrate, a lower via disposed in the lower insulation substrate, the upper via and the lower via not overlaid with each other.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: October 10, 2017
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jung Hwa Jung, Hee Tak Oh, Do Hyung Kim, You Jin Kwon, Oh Sug Kim
  • Patent number: 9574737
    Abstract: An aspherical lens includes a light entrance plane configured to receive light emitted from a light source and a light exit plane configured to radiate the light received by the light entrance plane. The light exit plane includes semispherical convex portions disposed on an upper surface of the aspherical lens, a concavely depressed portion comprising an overlapping region where the semispherical convex portions partially overlap each other at a central axis, a side portion connected with the semispherical convex portions, and an upper surface of each of the semispherical convex portions having a first flat portion.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 21, 2017
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Il Park, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Publication number: 20170018696
    Abstract: A light-emitting diode package includes a package body. The package body includes an upper insulation substrate including upper conductive patterns, a lower insulation substrate including lower conductive patterns, and middle conductive patterns disposed between the upper insulation substrate and the lower insulation substrate. The package body also includes an upper via disposed in the upper insulation substrate, a lower via disposed in the lower insulation substrate, the upper via and the lower via not overlaid with each other.
    Type: Application
    Filed: September 30, 2016
    Publication date: January 19, 2017
    Inventors: Jung Hwa JUNG, Hee Tak OH, Do Hyung KIM, You Jin KWON, Oh Sug KIM
  • Patent number: 9472743
    Abstract: A light-emitting diode package includes a package body and a light-emitting diode chip disposed on the package body. The package body includes upper conductive patterns disposed on an upper insulation substrate, a lower insulation substrate disposed on lower conductive patterns, and middle conductive patterns disposed between the upper insulation substrate and the lower insulation substrate. The package body also includes upper vias electrically connecting each of the upper conductive patterns to each of the middle conductive patterns, respectively, the upper vias being disposed in the upper insulation substrate, and lower vias electrically connecting each of the middle conductive patterns to each of the lower conductive patterns, respectively, the lower vias disposed in the lower insulation substrate.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: October 18, 2016
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jung Hwa Jung, Hee Tak Oh, Do Hyung Kim, You Jin Kwon, Oh Sug Kim
  • Publication number: 20160118563
    Abstract: A light-emitting diode package includes a package body and a light-emitting diode chip disposed on the package body. The package body includes upper conductive patterns disposed on an upper insulation substrate, a lower insulation substrate disposed on lower conductive patterns, and middle conductive patterns disposed between the upper insulation substrate and the lower insulation substrate. The package body also includes upper vias electrically connecting each of the upper conductive patterns to each of the middle conductive patterns, respectively, the upper vias being disposed in the upper insulation substrate, and lower vias electrically connecting each of the middle conductive patterns to each of the lower conductive patterns, respectively, the lower vias disposed in the lower insulation substrate.
    Type: Application
    Filed: December 30, 2015
    Publication date: April 28, 2016
    Inventors: Jung Hwa JUNG, Hee Tak Oh, Do Hyung KIM, You Jin KWON, Oh Sug KIM
  • Patent number: 9257624
    Abstract: A light emitting diode package includes a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: February 9, 2016
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jung Hwa Jung, Hee Tak Oh, Do Hyung Kim, You Jin Kwon, Oh Sug Kim
  • Publication number: 20150214453
    Abstract: A light emitting diode package includes a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Inventors: Jung Hwa JUNG, Hee Tak OH, Do Hyung KIM, You Jin KWON, Oh Sug KIM
  • Publication number: 20150204510
    Abstract: An aspherical lens includes a light entrance plane configured to receive light emitted from a light source and a light exit plane configured to radiate the light received by the light entrance plane. The light exit plane includes semispherical convex portions disposed on an upper surface of the aspherical lens, a concavely depressed portion comprising an overlapping region where the semispherical convex portions partially overlap each other at a central axis, a side portion connected with the semispherical convex portions, and an upper surface of each of the semispherical convex portions having a first flat portion.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Inventors: Kwang Il PARK, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Patent number: 9048391
    Abstract: A light emitting diode package includes a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: June 2, 2015
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jung Hwa Jung, Hee Tak Oh, Do Hyung Kim, You Jin Kwon, Oh Sug Kim
  • Patent number: 9022618
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: May 5, 2015
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Il Park, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Publication number: 20140312380
    Abstract: A light emitting diode package includes a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes.
    Type: Application
    Filed: June 30, 2014
    Publication date: October 23, 2014
    Inventors: Jung Hwa Jung, Hee Tak Oh, Do Hyung Kim, You Jin Kwon, Oh Sug Kim
  • Patent number: 8796706
    Abstract: Disclosed herein is a light emitting diode package including a package body having a cavity, a light emitting diode chip having a plurality of light emitting cells connected in series to one another, a phosphor converting a frequency of light emitted from the light emitting diode chip, and a pair of lead electrodes. The light emitting cells are connected in series between the pair of lead electrodes.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 5, 2014
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jung Hwa Jung, Hee Tak Oh, Do Hyung Kim, You Jin Kwon, Oh Sug Kim
  • Publication number: 20140071696
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang PARK, II, Sang Cheol LEE, Jeong A HAN, Woong Jun HWANG, Hee Tak OH
  • Patent number: 8602605
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: December 10, 2013
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Kwang Il Park, Sang Cheol Lee, Jeong A Han, Woong Jun Hwang, Hee Tak Oh
  • Publication number: 20120014115
    Abstract: Exemplary embodiments of the present invention relate to an aspherical light emitting diode (LED) lens and a light emitting device including the same. The aspherical LED lens includes a light exit plane concavely depressed near a central axis, a light entrance plane including a conical plane having a vertex located on the central axis, and a plurality of protrusions arranged on a portion of a side surface of the light exit plane. The aspherical LED lens has a radially symmetrical structure with respect to the central axis.
    Type: Application
    Filed: January 6, 2011
    Publication date: January 19, 2012
    Applicant: SEOUL SEMICONDUCTOR CO., LTD.
    Inventors: Kwang Il PARK, Sang Cheol LEE, Jeong A. HAN, Woong Jun HWANG, Hee Tak OH