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: 11961199
    Abstract: Partial simulation of forming wrinkles on a garment is performed by receiving selection of a partial region of a three-dimensional (3D) model of a garment that includes an a first region and a second region. The outer coordinates of polygons in the periphery of the selected first region are fixed while polygons in the second region within the first region are moved to simulate wrinkles formed in a middle region between the first region and the second region based on an external force applied to the second region.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: April 16, 2024
    Assignee: CLO Virtual Fashion Inc.
    Inventors: Yong Joon Lee, In Ho Park
  • Publication number: 20240113272
    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 5, 2023
    Publication date: April 4, 2024
    Applicant: Seoul Viosys Co., Ltd.
    Inventors: Seong Gyu JANG, Ho Joon LEE, Jong Hyeon CHAE
  • Publication number: 20240105686
    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: Application
    Filed: December 11, 2023
    Publication date: March 28, 2024
    Applicant: Seoul Viosys Co., Ltd.
    Inventors: Seong Kyu JANG, Seom Geun LEE, Chan Seob SHIN, Ho Joon LEE
  • Patent number: 11935912
    Abstract: A display apparatus including a thin film transistor (TFT) substrate; a first LED sub-unit, a second LED sub-unit, and a third LED sub-unit; first, second, third, and fourth electrode pads disposed between the TFT substrate and the first LED sub-unit; and connectors connecting the first, second, and third LED sub-units to a respective one of the electrode pads, in which the first, second, and third sub-units are configured to be independently driven; light generated from the first LED sub-unit is emitted to the outside of the display apparatus by passing through the second and third LED sub-units; light generated from the second LED sub-unit is emitted to the outside of the display apparatus by passing through the third LED sub-unit; and at least one of the connectors includes a first portion electrically connecting a first surface of the first LED sub-unit to the second electrode pad.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: March 19, 2024
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Patent number: 11923348
    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: October 10, 2022
    Date of Patent: March 5, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Seong Gyu Jang, Ho Joon Lee, Jong Hyeon Chae, Chung Hoon Lee
  • Publication number: 20240055467
    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: Application
    Filed: October 30, 2023
    Publication date: February 15, 2024
    Inventors: Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE
  • Patent number: 11876156
    Abstract: A light emitting device including first, second, and third light emitting parts disposed near each other and each including a first-type semiconductor layer, a first active layer, and a second-type semiconductor layer, a first pad electrically coupled with the second-type semiconductor layer of the first light emitting part, a second pad electrically coupled with the second-type semiconductor layer of the second light emitting part, a third pad electrically coupled with the second-type semiconductor layer of the third light emitting part, and a common pad electrically coupled with the first-type semiconductor layer of the first, second, and third light emitting parts, in which, in a current density per light emitting part of about 20 A/cm2, one of the first, second, and third light emitting parts that is configured to emit light having the longest peak wavelength has a largest normalized external quantum efficiency.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: January 16, 2024
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Seong Gyu Jang, Ho Joon Lee, Jong Hyeon Chae
  • Patent number: 11842987
    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: July 15, 2022
    Date of Patent: December 12, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Seong Kyu Jang, Seom Geun Lee, Chan Seob Shin, Ho Joon Lee
  • Publication number: 20230378240
    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: July 27, 2023
    Publication date: November 23, 2023
    Inventors: Chung Hoon LEE, Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE
  • Patent number: 11804511
    Abstract: A light emitting device including a first LED sub-unit, a second LED sub-unit disposed under the first LED sub-unit, a third LED sub-unit disposed under the second LED sub-unit, a first ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit, and in ohmic contact with the first LED sub-unit, a second ohmic electrode interposed between the second LED sub-unit and the third LED sub-unit, and in ohmic contact with the second LED sub-unit, a third ohmic electrode interposed between the second ohmic electrode and the third LED sub-unit, and in ohmic contact the third LED sub-unit, a plurality of electrode pads disposed on the first LED sub-unit, in which at least one of the first ohmic electrode, the second ohmic electrode, and the third ohmic electrode has a patterned structure.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: October 31, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Chang Yeon Kim, Jong Hyeon Chae, Jong Min Jang, Ho Joon Lee, Seong Gyu Jang
  • Patent number: 11804512
    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: Grant
    Filed: January 4, 2021
    Date of Patent: October 31, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee
  • Publication number: 20230343810
    Abstract: A light emitting device including a first LED sub-unit, a second LED sub-unit disposed under the first LED sub-unit, a third LED sub-unit disposed under the second LED sub-unit, a first ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit, and in ohmic contact with the first LED sub-unit, a second ohmic electrode interposed between the second LED sub-unit and the third LED sub-unit, and in ohmic contact with the second LED sub-unit, a third ohmic electrode interposed between the second ohmic electrode and the third LED sub-unit, and in ohmic contact the third LED sub-unit, a plurality of electrode pads disposed on the first LED sub-unit, in which at least one of the first ohmic electrode, the second ohmic electrode, and the third ohmic electrode has a patterned structure.
    Type: Application
    Filed: July 5, 2023
    Publication date: October 26, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Chang Yeon KIM, Jong Hyeon Chae, Jong Ming Jang, Ho Joon Lee, Seong Gyu Jang
  • Patent number: 11756984
    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, the first adhesive layer includes a conductive and non-transparent material, and the substrate includes a non-transparent material.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: September 12, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Chung Hoon Lee, Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee
  • Publication number: 20230261033
    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 19, 2023
    Publication date: August 17, 2023
    Inventors: Jong Hyeon CHAE, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Publication number: 20230223424
    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: March 15, 2023
    Publication date: July 13, 2023
    Inventors: Jong Hyeon CHAE, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Patent number: 11664410
    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: Grant
    Filed: November 4, 2021
    Date of Patent: May 30, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Patent number: 11664409
    Abstract: A light emitting diode (LED) stack for a display including a substrate, a first LED stack disposed on the substrate, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, a first color filter interposed between the first LED stack and the second LED stack, and a second color filter interposed between the second LED stack and the third LED stack, in which the second LED stack and the third LED stack are configured to transmit light generated from the first LED stack to the outside, and the third LED stack is configured to transmit light generated from the second LED stack to the outside.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: May 30, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20230143510
    Abstract: A light emitting device for a display including a transparent member laterally extending in a first direction and having a first region and a second region surrounding the first region, first to third light emission regions disposed on the transparent member, a support substrate, first to fourth electrode pads disposed between the transparent member and the support substrate, and vias electrically connecting the electrode pads to the light emission regions, respectively, in which the fourth electrode pad is electrically connected to at least one of the vias, each light emission region is disposed in the first region and does not overlap the second region in a second direction, and the fourth electrode pad overlaps one of the vias and one of the light emission regions in the second direction, and the one of the vias and the one of the light emission regions are separated from each other.
    Type: Application
    Filed: December 12, 2022
    Publication date: May 11, 2023
    Inventors: Jong Hyeon CHAE, Chung Hoon LEE, Chang Yeon KIM, Seong Gyu JANG, Ho Joon LEE, Jong Min JANG
  • Publication number: 20230128703
    Abstract: A light emitting device for a display including a first LED sub-unit, a second LED sub-unit disposed on the first LED sub-unit, a third LED sub-unit disposed on the second LED sub-unit, electrode pads disposed below the first LED sub-unit, and a planarization layer disposed between the first and second LED sub-units and being light transmissive, in which the electrode pads include a common electrode pad electrically connected in common to the first, second, and third LED sub-units, first, second, and third electrode pads connected to the first, second, and third LED sub-units, respectively, the first, second, and third LED sub-units are independently drivable, light generated in the first LED sub-unit is configured to be emitted to the outside through the second and third LED sub-units, and light generated in the second LED sub-unit is configured to be emitted to the outside through the third LED sub-unit.
    Type: Application
    Filed: December 22, 2022
    Publication date: April 27, 2023
    Inventors: Chang Yeon KIM, Jong Hyeon CHAE, Jong Min JANG, Ho Joon LEE, Seong Gyu JANG
  • Publication number: 20230121389
    Abstract: A light emitting device for a display including a first LED sub-unit laterally extending along a first direction, a second LED sub-unit, and a third LED sub-unit, electrode pads each overlapping at least a portion of the first LED sub-unit along a vertical direction and electrically connected to at least one of the first, second, and third LED sub-units, a lower insulation layer having a first surface extending in the first direction, a molding member covering each of the first LED sub-unit, the second LED sub-unit, and the third LED sub-unit, and lead electrodes electrically connected to the electrode pads and extending along the first surface and a side surface of the lower insulation layer, in which a portion of an outer region of each of the lead electrodes is disposed inside the outer boundary of the molding member when viewed in a cross-section.
    Type: Application
    Filed: December 19, 2022
    Publication date: April 20, 2023
    Inventors: Jong Hyeon CHAE, Ho Joon LEE, Seong Gyu JANG