Patents by Inventor Hyung Rae CHA

Hyung Rae CHA 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: 11973066
    Abstract: A light-emitting element includes a first end portion and a second end portion disposed in a length direction of the light-emitting element, a first electrode corresponding to the first end portion, a first semiconductor layer on the first electrode, an active layer on the first semiconductor layer, a second semiconductor layer on the active layer, and a second electrode on the second semiconductor layer and corresponding to the second end portion. The second electrode includes a first layer on the first semiconductor layer, and a second layer on the first layer. The first semiconductor layer includes a p-type semiconductor layer doped with a p-type dopant. The second semiconductor layer includes an n-type semiconductor layer doped with an n-type dopant. The first electrode is in ohmic contact with the first semiconductor layer. The second electrode is in ohmic contact with the second semiconductor layer.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: April 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyung Rae Cha, Dong Uk Kim, Sung Ae Jang, Ji Hyun Ham
  • Patent number: 11942567
    Abstract: Provided is a method of manufacturing a light-emitting element, the method including positioning a substrate, forming a first separation layer, which includes a first sacrificial layer, an etching control layer on the first sacrificial layer, and a second sacrificial layer on the etching control layer, on the substrate, forming at least one first light-emitting element on the first separation layer, and separating the first light-emitting element from the substrate.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: March 26, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Hong Min, Dae Hyun Kim, Hyun Min Cho, Jong Hyuk Kang, Dong Uk Kim, Seung A Lee, Hyun Deok Im, Hyung Rae Cha
  • Publication number: 20240038738
    Abstract: Provided are a light emitting device, a method for manufacturing same, and a display device including the light emitting device.
    Type: Application
    Filed: October 9, 2023
    Publication date: February 1, 2024
    Inventors: Hyun Min CHO, Dae Hyun KIM, Dong Uk KIM, Jung Hong MIN, Seung A LEE, Hyung Rae CHA
  • Publication number: 20230369542
    Abstract: A light-emitting device includes a light-emitting device core including a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and an element active layer disposed between the first semiconductor layer and the second semiconductor layer; a first insulating layer disposed on the side surface of the light-emitting device core to surround the side surface of the light-emitting device core, and having first fixed charges; and a second insulating layer surrounding the outer side surface of the first insulating layer, and including a material having second fixed charges different from the first fixed charges.
    Type: Application
    Filed: December 16, 2020
    Publication date: November 16, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyun Min CHO, Dong Uk KIM, Se Young KIM, Seung Geun LEE, Seung A LEE, Yo Han LEE, Sung Ae JANG, Hyung Rae CHA, Ji Hyun HAM
  • Patent number: 11810905
    Abstract: Provided are a light emitting device, a method for manufacturing same, and a display device including the light emitting device.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 7, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Cho, Dae Hyun Kim, Dong Uk Kim, Jung Hong Min, Seung A Lee, Hyung Rae Cha
  • Publication number: 20230352621
    Abstract: A light-emitting device includes: a light-emitting device core including a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer; an electrode layer on the second semiconductor layer of the light-emitting device core, and an insulating film around a side surface of the light-emitting device core, wherein a side surface of the electrode layer protrudes outward from a side surface of the second semiconductor layer.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 2, 2023
    Inventors: Hyung Rae CHA, Dong Uk KIM, Se Young KIM
  • Publication number: 20230282778
    Abstract: A light-emitting element comprises a core comprising a first semiconductor layer, a second semiconductor layer provided on the first semiconductor layer, and an emissive layer provided between the first semiconductor layer and the second semiconductor layer, and a first element insulating film around a side surface of the core, wherein the first element insulating film comprises a composite of an insulating member and an elastic member.
    Type: Application
    Filed: November 22, 2022
    Publication date: September 7, 2023
    Inventors: Dong Gyun KIM, Jun Bo SIM, Hee Yeon YOO, Jeong In CHOI, Chul Jong YOO, Yo Han LEE, Sung Ae JANG, Hyun Min CHO, Hyung Rae CHA
  • Publication number: 20230215986
    Abstract: A light-emitting element includes a core comprising a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and an emissive layer disposed between the first semiconductor layer and the second semiconductor layer, an interlayer dielectric film surrounding a side surface of the core, a first element insulating film surrounding an outer surface of the interlayer dielectric film, and a second element insulating film surrounding an outer surface of the first element insulating film. The interlayer dielectric film includes an oxide insulating material having a dielectric constant of about 10 or more, and the interlayer dielectric film has a thickness of less than or equal to about 5 nm.
    Type: Application
    Filed: August 8, 2022
    Publication date: July 6, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyung Rae CHA, Dae Hyun KIM, Dong Uk KIM, Dong Kyun SEO, Young Chul SIM
  • Patent number: 11682693
    Abstract: A display device includes a first pixel and a second pixel; a light emitting layer; a color conversion layer on the light emitting layer; and a color filter layer on the color conversion layer, the light emitting layer including one or more light emitting elements in the first pixel and the second pixel, the color conversion layer including a first color conversion layer in the first pixel and a second color conversion layer in the second pixel. The color filter layer includes a first color filter layer in the first pixel and a second color filter layer in the second pixel, the light emitting elements capable of emitting a first light having a first wavelength, each of the first color conversion layer and the second color conversion layer including first color conversion particles and second color conversion particles.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: June 20, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Uk Kim, Hyun Min Cho, Keun Kyu Song, Dae Hyun Kim, Jung Hong Min, Seung A Lee, Hyung Rae Cha
  • Publication number: 20230066350
    Abstract: A light emitting element may include: a light emitting element core including a first semiconductor layer, a second semiconductor layer, and a light emitting layer between the first semiconductor layer and the second semiconductor layer; and a single crystal insulating layer around a side surface of the light emitting element core.
    Type: Application
    Filed: May 5, 2022
    Publication date: March 2, 2023
    Inventors: Young Chul SIM, Jin Wan KIM, Dong Uk KIM, Dong Kyun SEO, Byung Ju LEE, Seung Geun LEE, Hyung Rae CHA
  • Publication number: 20230018385
    Abstract: A light-emitting element and a display device including the same are provided. The light-emitting element comprising: a light-emitting element core including a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and a light-emitting layer disposed between the first semiconductor layer and the second semiconductor layer, a nitride insulating film surrounding a side face of the light-emitting element core, a first element insulating film surrounding an outer side face of the nitride insulating film, and a second element insulating film surrounding an outer side face of the first element insulating film, wherein a thickness of the nitride insulating film is smaller than each of a thickness of the first element insulating film and a thickness of the second element insulating film.
    Type: Application
    Filed: February 18, 2022
    Publication date: January 19, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyung Rae CHA, Dong Uk KIM, Dong Kyun SEO, Young Chul SIM
  • Publication number: 20220359783
    Abstract: A light emitting element includes a semiconductor core having at least a partial region extending in a direction and including a first end, a second end, and a main body part between the first end and the second end; a first electrode layer surrounding the second end of the semiconductor core; a second electrode layer surrounding at least the first end of the semiconductor core and spaced apart from the first electrode layer; and an insulating layer surrounding the semiconductor core, the first electrode layer and the second electrode layer. The second end of the semiconductor core has a diameter smaller than a diameter of the main body part.
    Type: Application
    Filed: June 3, 2020
    Publication date: November 10, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Dong Uk KIM, Se Young KIM, Hyung Rae CHA
  • Publication number: 20220336527
    Abstract: A light emitting device includes: a first semiconductor layer that is doped with a first polarity dopant, and that includes a first part extending in a first direction and a second part connected to one side of the first part; a second semiconductor layer doped with second polarity dopant that differs from the first polarity dopant; an active layer between the first semiconductor layer and the second semiconductor layer; and an insulation film around at least the outer surface of the active layer and extends in the first direction, wherein the diameter of the second part measured in a second direction perpendicular to the first direction is larger than the diameter of the first part measured in the second direction, and the side surface of the second part is inclined.
    Type: Application
    Filed: February 27, 2020
    Publication date: October 20, 2022
    Inventors: Hyung Rae CHA, Dong Uk KIM, Myeong Hee KIM, Se Young KIM, Hyun Min CHO
  • Patent number: 11430912
    Abstract: A light emitting element, a method of manufacturing a light emitting element, and a display device including a light emitting element are provided. A method of manufacturing a light emitting element includes: preparing a lower panel including a substrate and a first sub conductive semiconductor layer on the substrate; forming a first mask layer including at least one mask pattern on at least a part of the lower panel to be spaced apart from each other and an opening region in which the mask patterns are spaced apart from each other; laminating a first conductive semiconductor layer, an active material layer, and a second conductive semiconductor layer on the first mask layer to form an element laminate; etching the element laminate in a vertical direction to form an element rod; and removing the mask pattern to separate the element rod from the lower panel.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: August 30, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Hong Min, Dae Hyun Kim, Seung A Lee, Hyun Min Cho, Jong Hyuk Kang, Dong Uk Kim, Hyun Deok Im, Hyung Rae Cha
  • Publication number: 20220254959
    Abstract: A light emitting element having a shape extending in a direction includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and second semiconductor layers, a first electrode layer on a second surface opposite to a first surface of the first semiconductor layer facing the active layer, a second electrode layer on a second surface opposite to a first surface of the second semiconductor layer facing the active layer, and an insulating film surrounding a side surface of the active layer, a side surface of the first electrode layer, and a side surface of the second electrode layer, wherein a first area including the insulating film adjacent to a side surface of the active layer has a thickness larger than a thickness of a second area including the insulating film adjacent to a side surface of the first electrode layer.
    Type: Application
    Filed: June 3, 2020
    Publication date: August 11, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Seung Geun LEE, Dong Uk KIM, Dae Hyun KIM, Se Young KIM, Hyun Min CHO, Hyung Rae CHA
  • Publication number: 20220190204
    Abstract: A light-emitting element includes: a first semiconductor layer including a first type semiconductor; a second semiconductor layer including a second type semiconductor different from the first type semiconductor; an active layer between one surface of the first semiconductor layer and one surface of the second semiconductor layer; a first electrode layer on another surface of the second semiconductor layer and having a first cross-sectional area; and a second electrode layer on another surface of the first semiconductor layer and having a second cross-sectional area smaller than the first cross-sectional area. A side surface of the light-emitting element defined by the first semiconductor layer, the active layer, the second semiconductor layer, and the second electrode layer is perpendicular to a main surface of the first electrode layer.
    Type: Application
    Filed: August 10, 2021
    Publication date: June 16, 2022
    Inventors: Hyung Rae CHA, Dong Uk KIM, Young Chul SIM, Sung Ae JANG, Ji Hyun HAM
  • Publication number: 20220190025
    Abstract: A light emitting diode includes a first end and a second end facing each other, a current blocking layer, a first semiconductor layer, an active layer, a second semiconductor layer, and an insulating film surrounding outer circumferential surfaces of the first semiconductor layer, the active layer, and the second semiconductor layer and exposing at least a portion of the current blocking layer and at least a portion of the first semiconductor layer at the second end. The current blocking layer, the first semiconductor layer, the active layer, and the second semiconductor layer are sequentially disposed in a direction from the second end to the first end.
    Type: Application
    Filed: August 13, 2021
    Publication date: June 16, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Chul Jong YOO, Dong Uk KIM, Se Young KIM, So Young LEE, Hyung Rae CHA
  • Publication number: 20220140186
    Abstract: A light emitting element may include an emission stacked pattern including a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer that are stacked in a longitudinal direction of the emission stacked pattern. The active layer may include a first surface that is in contact with the first conductive semiconductor layer in the longitudinal direction of the emission stacked pattern, and a second surface that is opposite the first surface and is in contact with the second conductive semiconductor layer. The first conductive semiconductor layer may include at least one n-type semiconductor layer, and the second conductive semiconductor layer may include at least one p-type semiconductor layer. Further, the first surface of the active layer may be located at a point corresponding to ?20% to +20% of half of a total length of the emission stacked pattern in the longitudinal direction of the emission stacked pattern.
    Type: Application
    Filed: August 20, 2019
    Publication date: May 5, 2022
    Inventors: Jung Hong MIN, Dae Hyun KIM, Dong Uk KIM, Hyun Min CHO, Se Young KIM, Seung A LEE, Hyung Rae CHA
  • Publication number: 20220140191
    Abstract: A light emitting element includes a first semiconductor layer including a first type of semiconductor, the first semiconductor layer including a 1-1-th semiconductor layer and a 1-2-th semiconductor layer, which are arranged in a length direction of the light emitting element; a second semiconductor layer including a second type of semiconductor different from the first type; an active layer disposed between the 1-2-th semiconductor layer and the second semiconductor layer; and an intermediate layer disposed between the 1-1-th semiconductor layer and the 1-2-th semiconductor layer and having a porous structure.
    Type: Application
    Filed: July 1, 2021
    Publication date: May 5, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Young Chul SIM, Hyung Rae CHA, Dong Uk KIM, Sung Ae JANG, Ji Hyun HAM
  • Publication number: 20220068892
    Abstract: A light-emitting element includes a first end portion and a second end portion disposed in a length direction of the light-emitting element, a first electrode corresponding to the first end portion, a first semiconductor layer on the first electrode, an active layer on the first semiconductor layer, a second semiconductor layer on the active layer, and a second electrode on the second semiconductor layer and corresponding to the second end portion. The second electrode includes a first layer on the first semiconductor layer, and a second layer on the first layer. The first semiconductor layer includes a p-type semiconductor layer doped with a p-type dopant. The second semiconductor layer includes an n-type semiconductor layer doped with an n-type dopant. The first electrode is in ohmic contact with the first semiconductor layer. The second electrode is in ohmic contact with the second semiconductor layer.
    Type: Application
    Filed: April 29, 2021
    Publication date: March 3, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyung Rae CHA, Dong Uk KIM, Sung Ae JANG, Ji Hyun HAM