Patents by Inventor Jeong-Won HAN

Jeong-Won HAN 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: 20250221092
    Abstract: A method of fabricating a display device includes preparing a target substrate and light-emitting elements, applying ink on the target substrate, supplying the light-emitting elements to the ink, and aligning the light-emitting elements to aligned positions on the target substrate. Accordingly, the alignment of the light-emitting elements is improved and the utilization efficiency of the light-emitting elements is increased.
    Type: Application
    Filed: July 15, 2024
    Publication date: July 3, 2025
    Applicant: Samsung Display Co., LTD.
    Inventor: Jeong Won HAN
  • Publication number: 20250183235
    Abstract: There are provided a method of manufacturing a display device and a display device. The method includes manufacturing light emitting elements; disposing the light emitting elements on a moving member; bonding the light emitting elements and a stamp member to each other; and transferring the light emitting elements on a pixel circuit layer. The moving member includes a moving base and a moving polymer layer on the moving base. The disposing of the light emitting elements includes attaching the light emitting elements on the moving polymer layer. The bonding of the light emitting elements includes separating the light emitting elements and the moving polymer layer from each other, by a laser.
    Type: Application
    Filed: July 2, 2024
    Publication date: June 5, 2025
    Applicant: Samsung Display Co., LTD.
    Inventor: Jeong Won HAN
  • Publication number: 20250140759
    Abstract: A method of manufacturing a film assembly for transferring a light emitting element is provided. The film assembly includes: a base portion; a stamp layer on the base portion; and a protective film on the stamp layer. The method includes: forming a first cutting area in the film assembly comprising exposing at least a portion of the stamp layer; and forming a second cutting area in the film assembly comprising entirely penetrating the film assembly. The forming of the second cutting area is performed after the forming of the first cutting area.
    Type: Application
    Filed: July 12, 2024
    Publication date: May 1, 2025
    Inventors: Jeong Won HAN, Han Chun RYU
  • Patent number: 12269269
    Abstract: An inkjet printing apparatus includes a surface acoustic wave module including an inner passage and a surface acoustic wave generator around the inner passage; and an outflow passage connected to the surface acoustic wave module to discharge ink, where the outflow passage includes a first outflow passage connected to the inner passage to discharge first ink particles and a second outflow passage connected to the inner passage to discharge second ink particles having an average diameter smaller than that of the first ink particles, and the surface acoustic wave generator is closer to the second outflow passage than the first outflow passage.
    Type: Grant
    Filed: July 17, 2023
    Date of Patent: April 8, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong Won Han, Myung Soo Huh
  • Publication number: 20250107275
    Abstract: A method of transferring a plurality of light emitting elements using a stretching device includes stretching a transfer film disposed on a support portion of the stretching device by a stretching portion, and arranging the plurality of light emitting elements at a first gap on the transfer film. The method further includes reducing an elongation of the transfer film so that the stretching portion disposes the plurality of light emitting elements at a second gap narrower than the first gap, and transferring the plurality of light emitting elements disposed at the second gap on the transfer film to a substrate.
    Type: Application
    Filed: May 20, 2024
    Publication date: March 27, 2025
    Applicant: Samsung Display Co., LTD.
    Inventor: Jeong Won HAN
  • Patent number: 12194735
    Abstract: An inkjet printing apparatus may form a material layer on a substrate. The inkjet printing apparatus includes a stage, an ink-receiving member, and an inkjet head. The stage may support the substrate. The inkjet head overlaps at least one of the stage and the ink-receiving member, may provide a first set of ink to the substrate, and may provide a second set of ink to the ink-receiving member when the substrate is supported by the stage.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: January 14, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong Won Han, Myung Soo Huh
  • Patent number: 12194746
    Abstract: An inkjet printing apparatus according to an embodiment includes a stage where a target substrate is disposed, and an inkjet head that discharges ink on the target substrate. The inkjet head includes a tank that stores the ink, nozzles that are provided on the tank and discharge the ink, and a damper that is disposed in the tank, and the damper comprises a protruding portion that protrudes toward the nozzles from the damper.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: January 14, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong Won Han, Jongho Park, Taeho Yang, Myung Soo Huh
  • Publication number: 20240429209
    Abstract: A transfer substrate according to an embodiment includes a base substrate, a magnetic plate disposed on a surface of the base substrate, a mold disposed on another surface of the base substrate and including a plurality of grooves, and a magnetic body disposed in the plurality of grooves of the mold.
    Type: Application
    Filed: February 7, 2024
    Publication date: December 26, 2024
    Applicant: Samsung Display Co., LTD.
    Inventor: Jeong Won HAN
  • Publication number: 20240363598
    Abstract: A transfer device of a light-emitting element, the transfer device including: a transferer including a transferring portion, a folding portion at an edge, a stamp layer having a tacky or adhesive surface, and a base layer above one surface of the stamp layer; a protective film above an other surface of the stamp layer, and defining an incision groove with the transferring portion at a center thereof on a plane; an inverter for inverting up, down, left, and right sides of the transferer, and including a support chuck configured to adsorb the protective film overlapping the transferring portion, and a side chuck configured to adsorb the protective film overlapping the folding portion; a transfer head having a head chuck configured to be adsorbed to the base layer, and movable up, down, left, and right; and a folder including a detachable first clamp.
    Type: Application
    Filed: April 2, 2024
    Publication date: October 31, 2024
    Inventors: Jeong Won HAN, Won Hee OH
  • Patent number: 12097706
    Abstract: An inkjet device includes a stage, a first suction member, a second suction member, a spray member, and a substrate. The first suction member is at a first side surface of the stage. The second suction member is at a second side surface of the stage. The spray member is configured to store ink and to move above top surfaces of the stage, the first suction member, and the second suction member, the spray member including a body and a nozzle at a side of the body to discharge the ink. The substrate is on the stage in which the ink discharged from the spray member is printed on the substrate.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: September 24, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jeong Won Han
  • Publication number: 20240243107
    Abstract: A transfer film stretching device includes: a transfer film support unit having a top surface configured to receive a transfer film, the transfer film having light emitting elements arranged at a first distance mounted thereon; a first stretching unit outside the transfer film support unit and configured to move in one direction or another direction of a third direction while fixing an outer edge of the transfer film to stretch a width of the transfer film in an outer circumferential direction; and a second stretching unit between the first stretching unit and the transfer film support unit and movable in the one direction or the other direction of the third direction independently of the first stretching unit.
    Type: Application
    Filed: December 21, 2023
    Publication date: July 18, 2024
    Inventors: Jeong Won HAN, Han Chun RYU
  • Publication number: 20240234179
    Abstract: A light-emitting element transfer system includes raw film cutting device for forming a transfer member by cutting a raw film, a stretching device for stretching a transfer film with a plurality of light-emitting elements disposed thereon, a circuit board support member for supporting a circuit board and transport head for adsorbing the transfer member and transferring the light-emitting elements on the transfer film onto the circuit board by using the adsorbed transfer member.
    Type: Application
    Filed: July 21, 2023
    Publication date: July 11, 2024
    Inventors: Jeong Won HAN, Chung Sic CHOI, Won Hee OH, Han Chun RYU, Jae Woo LEE
  • Publication number: 20240136208
    Abstract: A light-emitting element transfer system includes raw film cutting device for forming a transfer member by cutting a raw film, a stretching device for stretching a transfer film with a plurality of light-emitting elements disposed thereon, a circuit board support member for supporting a circuit board and transport head for adsorbing the transfer member and transferring the light-emitting elements on the transfer film onto the circuit board by using the adsorbed transfer member.
    Type: Application
    Filed: July 20, 2023
    Publication date: April 25, 2024
    Inventors: Jeong Won HAN, Chung Sic CHOI, Won Hee OH, Han Chun RYU, Jae Woo LEE
  • Publication number: 20240113252
    Abstract: An apparatus for transferring light emitting elements includes: a transfer member including a stamp layer having an adhesive property and a base layer on a first surface of the stamp layer, the transfer member having a transfer portion, a folding portion, and an incision groove at a boundary between the transfer portion and the folding portion; a protective film on a second surface of the stamp layer, the protective film having an incision groove defining a transfer area and a folding area; an inversion member supporting the transfer member; and a transfer head including a chuck configured to adsorb to the base layer and to move the transfer member vertically and horizontally. The transfer portion is at a center with respect to the incision groove, and the folding portion is at an outer side of the incision groove with respect to the transfer portion.
    Type: Application
    Filed: September 8, 2023
    Publication date: April 4, 2024
    Inventors: Jeong Won HAN, Won Hee OH
  • Publication number: 20240105759
    Abstract: The disclosure provides an apparatus for fabricating a display panel. The display device includes a transfer member having adhesiveness or stickiness and thereby capable of being bonded to light-emitting elements and a transport member transferring and bonding the light-emitting elements which are aligned on a donor substrate onto a circuit substrate by the transfer member, the transport member includes a laser transmitter formed of a material capable of transmitting laser light, a transport head capable of moving vertically and horizontally and surrounding side surfaces of the laser transmitter, and a head chuck disposed on a surface of the transport head to surround the side surfaces of the laser transmitter, having an adsorption function, and capable of being attached to, or detached from, the transfer member.
    Type: Application
    Filed: June 28, 2023
    Publication date: March 28, 2024
    Applicant: Samsung Display Co., LTD.
    Inventor: Jeong Won HAN
  • Publication number: 20240072027
    Abstract: The present disclosure may provide a method of fabricating a display panel, the method includes picking up, by a transfer head, a transfer member located on a support member, detaching a light-emitting element from a donor substrate by attaching the transfer member picked up by the transfer head to the light-emitting element on the donor substrate to lift the light-emitting element, aligning, by the transfer head, the light-emitting element attached to the transfer member on a circuit board, and detaching the transfer member from the transfer head, bonding the light-emitting element attached to the transfer member onto the circuit board and separating, by the transfer head, the transfer member from the light-emitting element bonded to the circuit board to remove the transfer member.
    Type: Application
    Filed: August 21, 2023
    Publication date: February 29, 2024
    Inventors: Jeong Won HAN, Won Hee OH
  • Publication number: 20230361240
    Abstract: An apparatus for manufacturing a display device includes a stage on which a substrate of the display device is disposed, a mold including a surface including recessed portions, an injector that applies an ink including light emitting elements on the surface of the mold, a doctor blade that removes the ink from the surface of the mold and remains the ink disposed in the recessed portions of the mold, and a compressor that compresses the surface of the mold to the substrate.
    Type: Application
    Filed: December 28, 2022
    Publication date: November 9, 2023
    Applicant: Samsung Display Co., LTD.
    Inventor: Jeong Won HAN
  • Publication number: 20230356529
    Abstract: An inkjet printing apparatus includes a surface acoustic wave module including an inner passage and a surface acoustic wave generator around the inner passage; and an outflow passage connected to the surface acoustic wave module to discharge ink, where the outflow passage includes a first outflow passage connected to the inner passage to discharge first ink particles and a second outflow passage connected to the inner passage to discharge second ink particles having an average diameter smaller than that of the first ink particles, and the surface acoustic wave generator is closer to the second outflow passage than the first outflow passage.
    Type: Application
    Filed: July 17, 2023
    Publication date: November 9, 2023
    Inventors: Jeong Won HAN, Myung Soo HUH
  • Patent number: 11766866
    Abstract: An inkjet printing apparatus includes a print head including an inkjet head having a nozzle surface; nozzles disposed on the nozzle surface, that spray an ink from the nozzles; and a heater that heats a temperature of the inkjet head to a reference temperature. The nozzles include a first nozzle having a first diameter; and a second nozzle having a second diameter different from the first diameter of the first nozzle, the nozzle surface includes a first area in which the first nozzle is disposed and a second area in which the second nozzle is disposed, the first area has a first temperature in case that the heater heats the inkjet head to the reference temperature, and the second area has a second temperature different from the first temperature in case that the heater heats the inkjet head to the reference temperature.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: September 26, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong Won Han, Myung Soo Huh
  • Patent number: 11752761
    Abstract: A system for droplet measurement includes an inkjet head including a nozzle which discharges droplets, a substrate on which droplets discharged from the nozzle of the inkjet head are dripped, a first detector disposed below the substrate and including a first camera and a first focusing structure, and a second detector disposed below the substrate and including a second camera and a second focusing structure.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: September 12, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong Won Han, Jeong Ho Yi