Patents by Inventor Jong Hyeon Chae

Jong Hyeon Chae 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: 20210126044
    Abstract: A light emitting stacked structure including a first epitaxial stack including a first n-type semiconductor layer, a first p-type semiconductor layer, and a first active layer disposed therebetween, a second epitaxial stack disposed on the first epitaxial stack and including a second n-type semiconductor layer, a second p-type semiconductor layer, and a second active layer disposed therebetween, a third epitaxial stack disposed on the second epitaxial layer and including a third n-type semiconductor layer, a third p-type semiconductor layer, and a third active layer disposed therebetween, and a shared electrode disposed between two adjacent epitaxial stacks facing each other, in which two semiconductor layers of the two adjacent epitaxial stacks with the shared electrode therebetween have a same polarity.
    Type: Application
    Filed: January 4, 2021
    Publication date: April 29, 2021
    Inventors: Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE
  • Patent number: 10991851
    Abstract: Provided are a light emitting diode (LED) in which a conductive barrier layer surrounding a reflective metal layer is defined by a protective insulating layer, and a method of manufacturing the same. A reflection pattern including a reflective metal layer and a conductive barrier layer is formed on an emission structure in which a first semiconductor layer, an active layer, and a second semiconductor layer are formed. The conductive barrier layer prevents diffusion of a reflective metal layer and extends to a protective insulating layer recessed under a photoresist pattern having an overhang structure during a forming process. Accordingly, a phenomenon where the conductive barrier layer is in contact with sidewalls of the photoresist pattern having an over-hang structure and the reflective metal layer forms points is prevented. Thus, LED modules having various shapes may be manufactured.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: April 27, 2021
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Jong Min Jang, Won Young Roh, Dae Woong Suh, Min Woo Kang, Joon Sub Lee, Hyun A. Kim
  • Patent number: 10985207
    Abstract: A display device includes a plurality of pixel tiles spaced apart from each other, each of the pixel tiles including a substrate and a plurality of light emitting stacked structures disposed on the substrate, in which a distance between two adjacent light emitting stacked structures in the same pixel tile is substantially equal to a shortest distance between two adjacent light emitting stacked structures of different pixel tiles.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: April 20, 2021
    Inventors: Chung Hoon Lee, Jong Hyeon Chae
  • Publication number: 20210091286
    Abstract: A method of mounting light emitting devices on a mounting board including steps of forming the light emitting devices spaced apart from one another on a first surface of a substrate, forming a mask pattern on a second surface of the substrate opposite to the first surface, the mask pattern exposing regions of the second surface of the substrate that overlap the light emitting devices to be separated from the substrate, and performing a selective laser lift-off process using the mask pattern to mount the light emitting devices to the mounting board.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Inventors: Seong Gyu JANG, Ho Joon LEE, Jong-Hyeon CHAE
  • Patent number: 10950755
    Abstract: A light emitting diode is provided to include a first conductive-type semiconductor layer; a mesa including a second conductive-type semiconductor layer disposed on the first conductive-type semiconductor layer and an active layer interposed between the first and the second conductive-type semiconductor layers; and a first electrode disposed on the mesa, wherein the first conductive-type semiconductor layer includes a first contact region disposed around the mesa along an outer periphery of the first conductive-type semiconductor layer; and a second contact region at least partially surrounded by the mesa, the first electrode is electrically connected to at least a portion of the first contact region and at least a portion of the second contact region, and a linewidth of an adjoining region between the first contact region and the first electrode is greater than the linewidth of an adjoining region between the second contact region and the first electrode.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: March 16, 2021
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Joon Sup Lee, Daewoong Suh, Won Young Roh, Min Woo Kang, Jong Min Jang, Se Hee Oh, Hyun A Kim
  • Patent number: 10950653
    Abstract: A display device includes a plurality of pixel tiles spaced apart from each other, each of the pixel tiles including a substrate and a plurality of light emitting stacked structures disposed on the substrate, in which a distance between two adjacent light emitting stacked structures in the same pixel tile is substantially equal to a shortest distance between two adjacent light emitting stacked structures of different pixel tiles.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: March 16, 2021
    Inventors: Chung Hoon Lee, Jong Hyeon Chae
  • Publication number: 20210057481
    Abstract: A light emitting device for a display including a first LED stack configured to generate light having a first peak wavelength, a second LED stack disposed under the first LED stack, and configured to generate light having a second peak wavelength, a third LED stack disposed under the second LED stack, and configured to generate light having a third peak wavelength, and a floating reflection layer disposed over the first LED stack, and configured to reflect light having the first peak wavelength, in which the first peak wavelength is longer than the second and third peak wavelengths.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 25, 2021
    Inventors: Jong Hyeon CHAE, Seom Geun LEE, Seong Kyu JANG
  • Publication number: 20210043678
    Abstract: A display panel including a circuit board having pads thereon, and a plurality of pixel regions arranged on the circuit board, each of the pixel regions including a first LED stack disposed on the circuit board, a first bonding layer disposed between the first LED stack and the circuit board, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, first through-vias passing through the first LED stack and the first bonding layer, second through-vias passing through the second LED stack, and third through-vias passing through the third LED stack, in which the first through-vias pass through the first LED stack and the first bonding layer, and are connected to the pads of the circuit board.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 11, 2021
    Inventors: Jong Hyeon CHAE, Seom Geun Lee, Seong Kyu Jang
  • Patent number: 10892296
    Abstract: A light emitting device including first, second, and third LED sub-units, and electrode pads disposed on the first LED sub-unit, electrically connected to the LED sub-units, and including a common electrode pad electrically connected to each of the LED sub-units, and first, second, and third electrode pads connected to a respective one of the LED sub-units, in which the common electrode pad, the second electrode pad, and the third electrode pad are electrically connected to the second LED sub-unit and the third LED sub-unit through holes that pass through the first LED sub-unit, the first, second, and third LED sub-units are configured to be independently driven, light generated in the first LED sub-unit emitted to the outside through the second and third LED sub-units, and light generated in the second LED sub-unit is emitted to the outside through the third LED sub-unit.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: January 12, 2021
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Patent number: 10892297
    Abstract: A light emitting diode (LED) stack for a display includes a first LED sub-unit having a first surface and a second surface, a second LED sub-unit disposed on the first surface of the first LED sub-unit, a third LED sub-unit disposed on the second LED sub-unit, a reflective electrode disposed on the second side of the second LED sub-unit and forming ohmic contact with the first LED sub-unit, and an ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit and forming ohmic contact with the first LED sub-unit, in which the second LED sub-unit and the third LED sub-unit are configured to transmit light generated from the first LED sub-unit, and the third LED sub-unit is configured to transmit light generated from the second LED sub-unit.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: January 12, 2021
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20210005785
    Abstract: A light emitting diode is provided to include a first conductive-type semiconductor layer; a mesa including a second conductive-type semiconductor layer disposed on the first conductive-type semiconductor layer and an active layer interposed between the first and the second conductive-type semiconductor layers; and a first electrode disposed on the mesa, wherein the first conductive-type semiconductor layer includes a first contact region disposed around the mesa along an outer periphery of the first conductive-type semiconductor layer; and a second contact region at least partially surrounded by the mesa, the first electrode is electrically connected to at least a portion of the first contact region and at least a portion of the second contact region, and a linewidth of an adjoining region between the first contact region and the first electrode is greater than the linewidth of an adjoining region between the second contact region and the first electrode.
    Type: Application
    Filed: September 17, 2020
    Publication date: January 7, 2021
    Inventors: Jong Hyeon CHAE, Joon Sup LEE, Daewoong SUH, Won Young ROH, Min Woo KANG, Jong Min JANG, Se Hee OH, Hyun A KIM
  • Patent number: 10886327
    Abstract: A light emitting stacked structure including a plurality of epitaxial sub-units disposed one over another, each epitaxial sub-unit configured to emit colored light having different wavelength band from each other, and a common electrode disposed between and connected to adjacent epitaxial sub-units, in which light emitting regions of the epitaxial sub-units overlap each other.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: January 5, 2021
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee
  • Patent number: 10886447
    Abstract: A light emitting device including a first light emitting part including a first ohmic layer, a second light emitting part and including a second ohmic layer, a third light emitting part including first and second metal patterns respectively contacting semiconductor layers thereof, a first pad electrically coupled with the first ohmic layer, a second pad electrically coupled with the second ohmic layer, a third pad electrically coupled with the first metal pattern, a common pad electrically coupled with a semiconductor layer of the first and second light emitting parts and the second metal pattern, and a via structure electrically coupling the second metal pattern and the common pad between the second metal pattern and the common pad, in which the second metal pattern has a first portion contacting the first via structure and a second portion contacting the semiconductor layer of the third light emitting part.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: January 5, 2021
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Seong Gyu Jang, Ho Joon Lee, Jong Hyeon Chae
  • Publication number: 20200381386
    Abstract: A light emitting device including at least one LED stack, electrode pads disposed on the LED stack, and cantilever electrodes disposed on the electrode pads, respectively, in which each of the cantilever electrodes has a fixed edge that is fixed to one of the electrode pads and a free standing edge that is spaced apart from the one of the electrode pads.
    Type: Application
    Filed: May 18, 2020
    Publication date: December 3, 2020
    Inventor: Jong Hyeon CHAE
  • Patent number: 10854670
    Abstract: A light emitting device including first, second, and third LED sub-units, and electrode pads disposed on the first LED sub-unit, electrically connected to the LED sub-units, and including a common electrode pad electrically connected to each of the LED sub-units, and first, second, and third electrode pads connected to a respective one of the LED sub-units, in which the common electrode pad, the second electrode pad, and the third electrode pad are electrically connected to the second LED sub-unit and the third LED sub-unit through holes that pass through the first LED sub-unit, the first, second, and third LED sub-units are configured to be independently driven, light generated in the first LED sub-unit emitted to the outside through the second and third LED sub-units, and light generated in the second LED sub-unit is emitted to the outside through the third LED sub-unit.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: December 1, 2020
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Patent number: 10854671
    Abstract: A light emitting diode (LED) stack for a display includes a first LED sub-unit having a first surface and a second surface, a second LED sub-unit disposed on the first surface of the first LED sub-unit, a third LED sub-unit disposed on the second LED sub-unit, a reflective electrode disposed on the second side of the second LED sub-unit and forming ohmic contact with the first LED sub-unit, and an ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit and forming ohmic contact with the first LED sub-unit, in which the second LED sub-unit and the third LED sub-unit are configured to transmit light generated from the first LED sub-unit, and the third LED sub-unit is configured to transmit light generated from the second LED sub-unit.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: December 1, 2020
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20200373284
    Abstract: A light emitting diode pixel for a display including a first subpixel comprising a first LED sub-unit, a second subpixel comprising a second LED sub-unit, and a third subpixel comprising a third LED sub-unit, in which each of the first, second, and third LED sub-units includes a first type of semiconductor layer and a second type of semiconductor layer, and the first, second, and third LED sub-units are separated from each other in a first direction, disposed at different planes from each other, and do not overlap each other in the first direction.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 26, 2020
    Inventors: Seong Gyu Jang, Ho Joon Lee, Jong Hyeon Chae, Chung Hoon Lee
  • Publication number: 20200357846
    Abstract: A light-emitting diode unit for a display including a plurality of pixels each including: first, second, and third light-emitting cells respectively including a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer; pads electrically connected to the first through third light-emitting cells to independently drive the first through third light-emitting cells; a first wavelength converter for converting a wavelength of light emitted from the first light-emitting cell; and a second wavelength converter for converting a wavelength of light emitted from the second light-emitting cell, in which the first wavelength converter converts a wavelength of light to a longer wavelength than the second wavelength converter, the second light-emitting cell has a greater area than the third light-emitting cell, and the first light-emitting cell has a greater area than the second light-emitting cell.
    Type: Application
    Filed: November 8, 2017
    Publication date: November 12, 2020
    Inventors: Chung Hoon LEE, Jong Hyeon CHAE
  • Publication number: 20200350469
    Abstract: Disclosed herein are a light emitting diode package and a method of manufacturing the same. The light emitting diode package includes: a substrate, a light-emitting layer disposed on a surface of the substrate and including a first type semiconductor layer, an active layer, and a second type semiconductor layer, a first bump disposed on the first type semiconductor layer and a second bump disposed the second type semiconductor layer, a protective layer covering at least the light-emitting layer, and a first bump pad and a second bump pad disposed on the protective layer and connected to the first bump and the second bump, respectively.
    Type: Application
    Filed: July 21, 2020
    Publication date: November 5, 2020
    Inventors: Chi Hyun In, Jun Yong Park, Kyu Ho Lee, Dae Woong Suh, Jong Hyeon Chae, Chang Hoon Kim, Sung Hyun Lee
  • Publication number: 20200328250
    Abstract: A light emitting diode (LED) stack for a display including a first LED sub-unit configured to emit a first colored light, a second LED sub-unit disposed on the first LED sub-unit and configured to emit a second colored light, and a third LED sub-unit disposed on at least one of the first LED sub-unit and the second LED sub-unit and configured to emit a third colored light, in which the first LED sub-unit is configured to emit light through the second LED sub-unit and the third LED sub-unit, and the second LED sub-unit is configured to emit light through the third LED sub-unit.
    Type: Application
    Filed: June 29, 2020
    Publication date: October 15, 2020
    Inventors: Jong Hyeon CHAE, Chung Hoon LEE, Seong Gyu JANG, Chang Yeon KIM, Ho Joon LEE