Patents by Inventor Ho-Joon Lee

Ho-Joon Lee 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: 12272681
    Abstract: A display panel including a circuit board having pads, light emitting devices electrically connected to the pads and arranged on the circuit board, each light emitting device having a first surface facing the circuit board and a second surface opposite to the first surface, a buffer material layer disposed between the circuit board and the light emitting devices to fill a space between the circuit board and the light emitting devices, and a cover layer covering the second surface of the light emitting devices, in which the buffer material layer is disposed under the first surfaces of the light emitting devices and has grooves in a region between adjacent light emitting devices, a portion of a top surface of the buffer material layer is disposed between adjacent light emitting devices, and the cover layer fills the grooves of the buffer material layer.
    Type: Grant
    Filed: December 11, 2023
    Date of Patent: April 8, 2025
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Seong Kyu Jang, Seom Geun Lee, Chan Seob Shin, Ho Joon Lee
  • Patent number: 12274106
    Abstract: A light module including a circuit substrate and a light emitter, the light emitter including a light source configured to generate light and including a first epitaxial layer, a second epitaxial layer, and an active layer, an insulation layer covering the light source, a first electrode electrically connected to the first epitaxial layer, a light guide configured to guide light generated from the light source, a transparent material covering the light source, and an angle controller disposed on the transparent material, in which the light guide has a guide hole filled with the transparent material, and a refractive index of the light guide is different from that of the light source.
    Type: Grant
    Filed: October 30, 2023
    Date of Patent: April 8, 2025
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee
  • Patent number: 12255190
    Abstract: A light emitting diode pixel for a display includes a first subpixel including a first LED sub-unit, a second subpixel including a second LED sub-unit, a third subpixel including a third LED sub-unit, and a bonding layer overlapping the first, second, and third subpixels, 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, each of the first, second, and third LED sub-units is disposed on a different plane, and light generated from the second subpixel is configured to be emitted to an outside of the light emitting diode pixel by passing through a lesser number of LED sub-units than light generated from the first subpixel and emitted to the outside.
    Type: Grant
    Filed: February 8, 2024
    Date of Patent: March 18, 2025
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Seong Gyu Jang, Ho Joon Lee, Jong Hyeon Chae, Chung Hoon Lee
  • Publication number: 20250081705
    Abstract: A display device including a substrate, a light emitting stacked structure disposed on the substrate and including a plurality of epitaxial sub-units disposed one over another, a first adhesive layer bonding the epitaxial sub-units to the substrate; and a line part disposed on the substrate and configured to apply a light emitting signal to each of the epitaxial sub-units, in which the light emitting stacked structure is configured to provide light having various colors by a combination of light emitted from each of the epitaxial sub-units, and the first adhesive layer includes a conductive and non-transparent material.
    Type: Application
    Filed: November 19, 2024
    Publication date: March 6, 2025
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon LEE, Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE
  • Publication number: 20250078231
    Abstract: Disclosed is a method for collecting data through HMI screen recognition and image analysis by using a camera. According to one embodiment of the present invention, the method for collecting the data through the HMI screen recognition and the image analysis by using the camera includes: receiving a first image obtained by capturing a screen of a human-machine interface (HMI) from an image camera; generating an image analysis result by analyzing the first image based on an artificial intelligence learning model configured to generate an analysis result by analyzing an image; and storing collection data corresponding to the first image based on the image analysis result.
    Type: Application
    Filed: December 11, 2023
    Publication date: March 6, 2025
    Applicant: IOE SOFT CO., LTD.
    Inventor: Ho Joon LEE
  • Publication number: 20250070100
    Abstract: A light emitting device including a first LED sub-unit having a thickness in a first direction, a second LED sub-unit disposed on a portion of the first LED sub-unit in the first direction, each of the first and second LED sub-units comprising a first-type semiconductor layer, a second-type semiconductor layer, and an active layer, a reflective electrode disposed adjacent to the first LED sub-unit and electrically connected to the first-type semiconductor layer of the first LED sub-unit, and a first ohmic electrode forming ohmic contact with the second-type semiconductor layer of the first LED sub-unit, in which the active layer of the first LED sub-unit is configured to generate light, includes AlxGa(1-x-y)InyP (0?x?1, 0?y?1), and overlaps the active layer of the second LED sub-unit in the first direction, and the active layer of the second LED sub-unit includes the same material as the active layer of the first LED sub-unit.
    Type: Application
    Filed: November 7, 2024
    Publication date: February 27, 2025
    Applicant: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon CHAE, Chang Yeon KIM, Ho Joon LEE, Seong Gyu JANG, Chung Hoon LEE, Dae Sung CHO
  • Patent number: 12229936
    Abstract: Some example embodiments relate to a super resolution scanning electron microscope (SEM) image implementing device and/or a method thereof. Provided a super resolution scanning electron microscope (SEM) image implementing device comprising a processor configured to crop a low resolution SEM image to generate a first cropped image and a second cropped image, to upscale the first cropped image and the second cropped image to generate a first upscaled image and a second upscaled image, and to cancel noise from the first upscaled image and the second upscaled image to generate a first noise canceled image and a second noise canceled image.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: February 18, 2025
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho Joon Lee, Il Kwon Kim, Sang Gul Park, Chang Wook Jeong, Moon Hyun Cha, Sat Byul Kim
  • Publication number: 20250048793
    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: Application
    Filed: October 23, 2024
    Publication date: February 6, 2025
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Seong Kyu JANG, Chan Seob SHIN, Seom Geun LEE, Ho Joon LEE
  • Patent number: 12183773
    Abstract: A display device including a substrate, a light emitting stacked structure disposed on the substrate and including a plurality of epitaxial sub-units disposed one over another, a first adhesive layer bonding the epitaxial sub-units to the substrate; and a line part disposed on the substrate and configured to apply a light emitting signal to each of the epitaxial sub-units, in which the light emitting stacked structure is configured to provide light having various colors by a combination of light emitted from each of the epitaxial sub-units, and the first adhesive layer includes a conductive and non-transparent material.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: December 31, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee
  • Publication number: 20240421134
    Abstract: A display apparatus including a substrate, and pixel regions and at least one separation region between the pixel regions, each pixel region including a first LED stack, a second LED stack adjacent to the first LED stack, a third LED stack adjacent to the second LED stack and each having a side surface forming a first angle, a second angle, and a third angle with the substrate, respectively, electrode pads electrically connected to the first, second, and third LED stacks, and an insulation layer disposed on at least one of the first, second, and third LED stacks, in which the first LED stack is configured to emit light having a longer peak wavelength than that emitted from the second and third LED stacks, and the first angle is different from the second and third angles.
    Type: Application
    Filed: August 28, 2024
    Publication date: December 19, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon CHAE, Chang Yeon KIM, Seong Gyu JANG, Ho Joon LEE, Jong Min JANG, Dae Sung CHO
  • Publication number: 20240400997
    Abstract: The present invention relates to a transformed human hepatic stellate cell line, and a use thereof. The hepatic stellate cell line according to the present invention exhibits an improvement in drug response, and when co-cultured with hepatic stellate cells, does not exhibit a functional decrease in the hepatic cells, and thus can be advantageously used in an in vitro culture model.
    Type: Application
    Filed: December 28, 2021
    Publication date: December 5, 2024
    Applicant: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY
    Inventors: Kyung-Sook CHUNG, Myung Jin SON, Hyun Mi KANG, Ho-Joon LEE, Cho-Rok JUNG, Ok Seon KWON, Seonju MUN
  • Patent number: 12142602
    Abstract: A light emitting device including a first LED sub-unit having a thickness in a first direction, a second LED sub-unit disposed on a portion of the first LED sub-unit in the first direction, each of the first and second LED sub-units comprising a first-type semiconductor layer, a second-type semiconductor layer, and an active layer, a reflective electrode disposed adjacent to the first LED sub-unit and electrically connected to the first-type semiconductor layer of the first LED sub-unit, and a first ohmic electrode forming ohmic contact with the second-type semiconductor layer of the first LED sub-unit, in which the active layer of the first LED sub-unit is configured to generate light, includes AlxGa(1-x-y)InyP (0?x?1, 0?y?1), and overlaps the active layer of the second LED sub-unit in the first direction, and the active layer of the second LED sub-unit includes the same material as the active layer of the first LED sub-unit.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: November 12, 2024
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Ho Joon Lee, Seong Gyu Jang, Chung Hoon Lee, Dae Sung Cho
  • Publication number: 20240363675
    Abstract: A light emitting diode (LED) stack for a display including a first LED stack including a first conductivity-type semiconductor layer and a second conductivity-type semiconductor layer, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, an intermediate bonding layer disposed between the first LED stack and the second LED stack to bond the second LED stack to the first LED stack, an upper bonding layer disposed between the second LED stack and the third LED stack to couple the third LED stack to the second LED stack, and a first hydrophilic material layer disposed between the first LED stack and the upper bonding layer.
    Type: Application
    Filed: July 9, 2024
    Publication date: October 31, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE, Chang Yeon KIM, Chung Hoon LEE
  • 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: 20240339488
    Abstract: A light emitting diode (LED) pixel for a display including a first LED stack having a first well layer, a second LED stack disposed on the first LED stack and having a second well layer, a third LED stack disposed on the second LED stack and having a third well layer, a first electrode disposed on the first LED stack and in ohmic contact with the first LED stack, a second electrode disposed on the second LED stack and in ohmic contact with a surface of the second LED stack, and a third electrode in ohmic contact with a surface of the third LED stack, in which the first well layer includes at least one base material different from that of the second well layer.
    Type: Application
    Filed: June 17, 2024
    Publication date: October 10, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon CHAE, Chung Hoon LEE, Seong Gyu JANG, Chang Yeon KIM, Ho Joon LEE
  • Patent number: 12107081
    Abstract: A display apparatus including a substrate, and pixel regions and at least one separation region between the pixel regions, each pixel region including a first LED stack, a second LED stack adjacent to the first LED stack, a third LED stack adjacent to the second LED stack and each having a side surface forming a first angle, a second angle, and a third angle with the substrate, respectively, electrode pads electrically connected to the first, second, and third LED stacks, and an insulation layer disposed on at least one of the first, second, and third LED stacks, in which the first LED stack is configured to emit light having a longer peak wavelength than that emitted from the second and third LED stacks, and the first angle is different from the second and third angles.
    Type: Grant
    Filed: December 7, 2022
    Date of Patent: October 1, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Seong Gyu Jang, Ho Joon Lee, Jong Min Jang, Dae Sung Cho
  • Patent number: 12100696
    Abstract: A light emitting diode pixel for a display including a first LED sub-unit, a second LED sub-unit disposed on a portion of the first LED sub-unit, a third LED sub-unit disposed on a portion of the second LED sub-unit, and a reflective electrode disposed adjacent to the first LED sub-unit, in which each of the first to third LED sub-units comprises an n-type semiconductor layer and a p-type semiconductor layer, each of the n-type semiconductor layers of the first, second, and third LED stacks is electrically connected to the reflective electrode, and the first LED sub-unit, the second LED sub-unit, and the third LED sub-unit are configured to be independently driven.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: September 24, 2024
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Ho Joon Lee, Seong Gyu Jang, Chung Hoon Lee, Dae Sung Cho
  • Publication number: 20240297206
    Abstract: A light emitting diode (LED) stack for a display including a first LED stack including a first conductivity-type semiconductor layer and a second conductivity-type semiconductor layer, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, an intermediate bonding layer disposed between the first LED stack and the second LED stack to bond the second LED stack to the first LED stack, an upper bonding layer disposed between the second LED stack and the third LED stack to couple the third LED stack to the second LED stack, and a first hydrophilic material layer disposed between the first LED stack and the upper bonding layer.
    Type: Application
    Filed: April 25, 2024
    Publication date: September 5, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE, Chang Yeon KIM, Chung Hoon LEE
  • Patent number: 12062684
    Abstract: A light emitting diode (LED) pixel for a display including a first LED stack having a first well layer, a second LED stack disposed on the first LED stack and having a second well layer, a third LED stack disposed on the second LED stack and having a third well layer, a first electrode disposed on the first LED stack and in ohmic contact with the first LED stack, a second electrode disposed on the second LED stack and in ohmic contact with a surface of the second LED stack, and a third electrode in ohmic contact with a surface of the third LED stack, in which the first well layer includes at least one base material different from that of the second well layer.
    Type: Grant
    Filed: March 15, 2023
    Date of Patent: August 13, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20240266385
    Abstract: A light emitting diode pixel for a display including a first LED sub-unit, a second LED sub-unit disposed on a first portion of the first LED sub-unit, and a third LED sub-unit disposed on a second portion of the second LED sub-unit, in which each of the first, second, and third LED sub-units includes a first conductivity type semiconductor layer and a second conductivity type semiconductor layer, light generated from the first LED sub-unit is configured to be emitted outside of the light emitting diode pixel through a third portion of the first LED sub-unit different from the first portion, and light generated from the second LED sub-unit is configured to be emitted outside of the light emitting diode pixel through a fourth portion of the second LED sub-unit different from the second portion.
    Type: Application
    Filed: March 4, 2024
    Publication date: August 8, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon LEE, Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE