Patents by Inventor Seong-Geun Jang

Seong-Geun Jang 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: 20240363600
    Abstract: A light emitting module including a circuit board and a lighting emitting device thereon and including first, second, and third LED stacks each including first and second conductivity type semiconductor layers, a first bonding layer between the second and third LED stacks, a second bonding layer between the first and second LED stacks, a first planarization layer between the second bonding layer and the third LED stack, a second planarization layer on the first LED stack, a lower conductive material extending along sides of the first planarization layer, the second LED stack, the first bonding layer, and electrically connected to the first conductivity type semiconductor layers of each LED stack, respectively, and an upper conductive material between the circuit board and the lower conductive material.
    Type: Application
    Filed: July 11, 2024
    Publication date: October 31, 2024
    Applicant: Seoul Viosys Co., Ltd.
    Inventors: Seom Geun LEE, Seong-Kyu JANG, Yong Woo RYU, Jong Hyeon CHAE
  • Patent number: 12132148
    Abstract: A method of fabricating a light emitting device for a display, the method including the steps of growing a first LED stack on a first growth substrate, the first LED stack including a first conductivity type semiconductor layer and a second conductivity type semiconductor layer, growing a second LED stack on a second growth substrate, the second LED stack including a first conductivity type semiconductor layer and a second conductivity type semiconductor layer, bonding the second LED stack to a first temporary substrate, removing the second growth substrate from the second LED stack, bonding the second LED stack to the first LED stack, and removing the first temporary substrate from the second LED stack.
    Type: Grant
    Filed: November 28, 2021
    Date of Patent: October 29, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Seong Kyu Jang, Chan Seob Shin, Seom Geun Lee, Ho Joon Lee
  • Publication number: 20240355867
    Abstract: A stacked light emitting device includes a first LED stack, a second LED stack disposed under the first LED stack, a third LED stack disposed under the second LED stack, and a plurality of pads disposed over the first LED stack. Each of the first, second, and third LED stacks has a light generation region and a peripheral region disposed around the light generation region. The plurality of pads is disposed on the peripheral region of the first LED stack.
    Type: Application
    Filed: July 1, 2024
    Publication date: October 24, 2024
    Inventors: Seong Kyu JANG, Seom Geun LEE, Yong Woo RYU
  • Patent number: 12125941
    Abstract: A light emitting device for a display including a first LED stack, a second LED stack disposed under the first LED stack, a third LED stack disposed under the second LED stack, and including a first conductivity type semiconductor layer and a second conductivity type semiconductor layer, a surface protection layer at least partially covering side surfaces of the first LED stack, the second LED stack, or the third LED stack, a first bonding layer interposed between the second LED stack and the third LED stack, a second bonding layer interposed between the first LED stack and the second LED stack, lower buried vias passing through the second LED stack and the first bonding layer, and electrically connected to the first conductivity type semiconductor layer and the second conductivity type semiconductor layer of the third LED stack, respectively, and upper buried vias passing through the first LED stack.
    Type: Grant
    Filed: November 29, 2020
    Date of Patent: October 22, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Seom Geun Lee, Seong Kyu Jang
  • Publication number: 20240313182
    Abstract: A stacked light emitting device includes a first LED stack, a second LED stack disposed under the first LED stack, a third LED stack disposed under the second LED stack, a third-1 connector and a third-2 connector disposed between the second LED stack and the third LED stack, and a plurality of pads disposed over the first LED stack, and electrically connected to the first, second, and third LED stacks. Each of the first, second, and third LED stacks has a light generation region and a peripheral region disposed around the light generation region.
    Type: Application
    Filed: May 14, 2024
    Publication date: September 19, 2024
    Inventors: Seom Geun LEE, Seong Kyu JANG, Yong Woo RYU
  • Publication number: 20240282803
    Abstract: A light emitting device for a display according to an exemplary embodiment includes a first LED stack, a second LED stack located under the first LED stack, and a third LED stack located under the second LED stack. The light emitting device further includes a first bonding layer, a second bonding layer, a first planarization layer, a second planarization layer, lower buried vias, and upper buried vias. The first planarization layer is recessed inwardly to expose an edge of the second LED stack.
    Type: Application
    Filed: March 8, 2024
    Publication date: August 22, 2024
    Inventors: Seom Geun LEE, Seong Kyu JANG, Yong Woo RYU
  • Patent number: 12046587
    Abstract: A light emitting module including a circuit board and a lighting emitting device thereon and including first, second, and third LED stacks each including first and second conductivity type semiconductor layers, a first bonding layer between the second and third LED stacks, a second bonding layer between the first and second LED stacks, a first planarization layer between the second bonding layer and the third LED stack, a second planarization layer on the first LED stack, a lower conductive material extending along sides of the first planarization layer, the second LED stack, the first bonding layer, and electrically connected to the first conductivity type semiconductor layers of each LED stack, respectively, and an upper conductive material between the circuit board and the lower conductive material.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: July 23, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Seom Geun Lee, Seong Kyu Jang, Yong Woo Ryu, Jong Hyeon Chae
  • Patent number: 12040344
    Abstract: A stacked light emitting device includes a first LED stack, a second LED stack disposed under the first LED stack, a third LED stack disposed under the second LED stack, and a plurality of pads disposed over the first LED stack. Each of the first, second, and third LED stacks has a light generation region and a peripheral region disposed around the light generation region. The plurality of pads is disposed on the peripheral region of the first LED stack.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: July 16, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Seong Kyu Jang, Seom Geun Lee, Yong Woo Ryu
  • Publication number: 20160061456
    Abstract: The present invention relates to a portable burner in which a combustion gas exhaust path formed by a case body including an external case and an internal case and by a camping cooker inserted into the case body is formed in zigzag, and combustion gas is not immediately exhausted to achieve heat exchange for a sufficient time, thereby improving thermal efficiency and safely carrying the portable burner.
    Type: Application
    Filed: May 25, 2015
    Publication date: March 3, 2016
    Inventor: Seong Geun Jang
  • Patent number: 5314978
    Abstract: Copolymers comprising 1-50 mole % of sulfur dioxide and 50-99 mole % of trialkylgermylstyrene, having a weight average molecular weight of 500-10,000,000 and exhibiting a high sensitivity to light, electron beam, and X-ray, as well as having an excellent anti-dry etching resistance, and their application as a positive resisting material.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: May 24, 1994
    Assignee: Kumho Petrochemical Company, Limited
    Inventors: Seong-Ju Kim, Ji-Hong Kim, Seong-Geun Jang, Dae-Youp Lee