Patents by Inventor Woong Sun YUM

Woong Sun YUM 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: 10950754
    Abstract: An embodiment discloses a semiconductor device comprising: a light-emitting structure having a first conductive semiconductor layer, a second conductive semiconductor layer and an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer; a first electrode disposed on the first conductive semiconductor layer; a second electrode disposed below the second conductive semiconductor layer; and a current blocking layer disposed between the second conductive semiconductor layer and the second electrode, wherein the first conductive semiconductor layer includes a first region in which the first electrode is disposed and a second region, the thickness of which is less than the thickness of the first region, and the current blocking layer is disposed in a region corresponding to the first region in the thickness direction.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: March 16, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Woong Sun Yum, Hyun Ju Kim, Jin Soo Park, Seung Il Lee, Jae Young Im
  • Publication number: 20190355875
    Abstract: An embodiment discloses a semiconductor device comprising: a light-emitting structure having a first conductive semiconductor layer, a second conductive semiconductor layer and an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer; a first electrode disposed on the first conductive semiconductor layer; a second electrode disposed below the second conductive semiconductor layer; and a current blocking layer disposed between the second conductive semiconductor layer and the second electrode, wherein the first conductive semiconductor layer includes a first region in which the first electrode is disposed and a second region, the thickness of which is less than the thickness of the first region, and the current blocking layer is disposed in a region corresponding to the first region in the thickness direction.
    Type: Application
    Filed: December 27, 2017
    Publication date: November 21, 2019
    Inventors: Woong Sun YUM, Hyun Ju KIM, Jin Soo PARK, Seung Il LEE, Jae Young IM
  • Patent number: 9865778
    Abstract: A light-emitting device discloses a light emitting structure layer including an active layer between first and second conductive semiconductor layers, a first electrode electrically connected to the first conductive semiconductor layer, a contact layer disposed under the second conductive semiconductor layer, a reflective layer disposed under the contact layer, a capping layer disposed under the reflective layer, and a conductive supporting member disposed under the capping layer. The reflective layer comprises a thickness that is greater than the thickness of the second conductive semiconductor layer and 90 or more times greater than the thickness of the contact layer.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: January 9, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Woong Sun Yum, Ji Hyun Koo, Hyun Ju Kim, Kyung Wook Park, Sung Ho Choo
  • Publication number: 20170125638
    Abstract: A light-emitting device discloses a light emitting structure layer including an active layer between first and second conductive semiconductor layers, a first electrode electrically connected to the first conductive semiconductor layer, a contact layer disposed under the second conductive semiconductor layer, a reflective layer disposed under the contact layer, a capping layer disposed under the reflective layer, and a conductive supporting member disposed under the capping layer. The reflective layer comprises a thickness that is greater than the thickness of the second conductive semiconductor layer and 90 or more times greater than the thickness of the contact layer.
    Type: Application
    Filed: April 2, 2015
    Publication date: May 4, 2017
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Woong Sun YUM, Ji Hyun KOO, Hyun Ju KIM, Kyung Wook PARK, Sung Ho CHOO