Patents by Inventor Heechang YOON

Heechang YOON 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: 12004364
    Abstract: A light-emitting device and an apparatus including the same include a first electrode, a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes m emission units and (m-1) charge generating units, each of the charge generating units being between the emission units that are adjacent to each other, m is a natural number of 2 or greater, at least one of the (m-1) charge generating units includes an n-type charge generating layer, a p-type charge generating layer, and a p-type hole injection layer, wherein the n-type charge generating layer includes an n-type organic compound and a metal material, and wherein the p-type charge generating layer and the p-type hole injection layer each independently include an inorganic semiconductor material.
    Type: Grant
    Filed: July 5, 2023
    Date of Patent: June 4, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dongchan Kim, Jiyoung Moon, Heechang Yoon, Jihye Lee, Hakchoong Lee, Haemyeong Lee, Myungsuk Han, Jihwan Yoon, Jonghyuk Lee, Yoonhyeung Cho
  • Publication number: 20240123724
    Abstract: Provided is a protective film including a first protective film configured to cover an upper surface of a display panel, the first protective film including a flat portion, inclined portions extending from the flat portion, and surrounding the flat portion in plan view, and boundary portions respectively between the inclined portions, and respectively corresponding to corners of the flat portion, wherein the inclined portions and the boundary portions become thinner in a direction away from the flat portion.
    Type: Application
    Filed: August 2, 2023
    Publication date: April 18, 2024
    Inventors: OHJUNE KWON, HEECHANG YOON, Sangyeon HWANG
  • Publication number: 20240099117
    Abstract: A method of manufacturing a display device includes providing an encapsulation layer on a display panel, providing an uncured resin layer on the encapsulation layer and forming a protective layer by curing the uncured resin layer in a nitrogen atmosphere having an oxygen concentration in a range of about 300 ppm to about 10000 ppm.
    Type: Application
    Filed: July 1, 2023
    Publication date: March 21, 2024
    Inventors: SEUNGWOOK KWON, HEECHANG YOON, JINHO HYUN, OHJUNE KWON, HYOJEONG KWON, SEUNGGUN CHAE, SEUNG-YEON CHAE, Sangyeon Hwang
  • Publication number: 20240081138
    Abstract: A method of manufacturing a display device includes: forming an encapsulation layer on a display panel, forming an uncured resin layer on the encapsulation layer, applying beads on a surface of the uncured resin layer and forming a protective layer by curing the uncured resin layer.
    Type: Application
    Filed: July 1, 2023
    Publication date: March 7, 2024
    Inventors: HEECHANG YOON, SEUNGWOOK KWON, HYOJEONG KWON, SEUNG-YEON CHAE
  • Patent number: 11895903
    Abstract: A method of forming a perovskite thin film and a light-emitting device including a layer manufactured by the method.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: February 6, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoonseok Ka, Dongchan Kim, Jiyoung Moon, Heechang Yoon
  • Publication number: 20230354635
    Abstract: A light-emitting device and an apparatus including the same include a first electrode, a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes m emission units and (m?1) charge generating units, each of the charge generating units being between the emission units that are adjacent to each other, m is a natural number of 2 or greater, at least one of the (m?1) charge generating units includes an n-type charge generating layer, a p-type charge generating layer, and a p-type hole injection layer, wherein the n-type charge generating layer includes an n-type organic compound and a metal material, and wherein the p-type charge generating layer and the p-type hole injection layer each independently include an inorganic semiconductor material.
    Type: Application
    Filed: July 5, 2023
    Publication date: November 2, 2023
    Inventors: Dongchan Kim, Jiyoung Moon, Heechang Yoon, Jihye Lee, Hakchoong Lee, Haemyeong Lee, Myungsuk Han, Jihwan Yoon, Jonghyuk Lee, Yoonhyeung Cho
  • Patent number: 11744100
    Abstract: A light-emitting device and an apparatus including the same include a first electrode, a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes m emission units and (m?1) charge generating units, each of the charge generating units being between the emission units that are adjacent to each other, m is a natural number of 2 or greater, at least one of the (m?1) charge generating units includes an n-type charge generating layer, a p-type charge generating layer, and a p-type hole injection layer, wherein the n-type charge generating layer includes an n-type organic compound and a metal material, and wherein the p-type charge generating layer and the p-type hole injection layer each independently include an inorganic semiconductor material.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: August 29, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dongchan Kim, Jiyoung Moon, Heechang Yoon, Jihye Lee, Hakchoong Lee, Haemyeong Lee, Myungsuk Han, Jihwan Yoon, Jonghyuk Lee, Yoonhyeung Cho
  • Publication number: 20230180514
    Abstract: A display panel includes a base layer including a display area and a non-display area adjacent to the display area, a plurality of light-emitting elements disposed in the display area, a hydrophobic layer disposed in the non-display area and spaced apart from the light-emitting elements, an insulating layer disposed on the light-emitting elements and including an upper surface and an inclined surface inclined with respect to the upper surface, and a plurality of patterns contacting with the hydrophobic layer, and the plurality of patterns is spaced apart from the inclined surface.
    Type: Application
    Filed: September 22, 2022
    Publication date: June 8, 2023
    Inventors: HYEMIN LEE, HEECHANG YOON, HYOUNG SUB LEE, JINHO HYUN
  • Patent number: 11653517
    Abstract: A light-emitting device includes a first electrode; a second electrode facing the first electrode; m emission units between the first electrode and the second electrode; and m?1 charge-generating unit(s) between adjacent ones of the emission units, where m is a natural number of 2 or more. The emission units each include an emission layer. At least one of the charge-generating unit(s) includes an n-type charge-generating layer and a p-type charge-generating layer; and the n-type charge-generating layer includes a first material and a second material. The first material includes an organic electron transport compound; and the second material includes at least one selected from an alkali metal, an alkali metal alloy, an alkaline earth metal, an alkaline earth metal alloy, a lanthanide metal, and a lanthanide metal alloy. The light-emitting device may have improved hole and electron balance, a decreased driving voltage, and excellent efficiency and/or lifespan characteristics.
    Type: Grant
    Filed: September 26, 2020
    Date of Patent: May 16, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dongchan Kim, Jiyoung Moon, Heechang Yoon, Jihye Lee, Hakchoong Lee, Haemyeong Lee, Yoonhyeung Cho, Myungsuk Han, Jihwan Yoon, Jonghyuk Lee
  • Publication number: 20230122827
    Abstract: A display device includes a first region including a first light emitting element including a first electrode, a second region including a second light emitting element including a second electrode, a pixel defining layer including a first sidewall defining a first opening corresponding to the first electrode and a second sidewall defining a second opening corresponding to the second electrode, a first spacer which protrudes from the pixel defining layer in the first region and includes a first edge closest to the first opening, and a second spacer which protrudes from the pixel defining layer in the second region and includes a second edge closest to the second opening. A distance between the first sidewall and the first edge, is smaller than a distance between the second sidewall and the second edge.
    Type: Application
    Filed: August 12, 2022
    Publication date: April 20, 2023
    Inventors: JINHO HYUN, HEECHANG YOON, HYOUNG SUB LEE, HYEMIN LEE, WOO YONG SUNG, SEUNGYONG SONG
  • Publication number: 20230094912
    Abstract: An inkjet printing apparatus includes: a stage, which reciprocates in forward and reverse directions opposite to each other and has a target substrate disposed thereon; an inspection device including a film disposed outside the stage and a measurement unit which measures an inspection pattern provided on the film; and a head assembly, which moves along one direction crossing the forward direction and has a plurality of heads which supplies a liquid composition to the target substrate. The head assembly moves in the one direction to overlap the film and sprays the composition onto the film to form an inspection pattern.
    Type: Application
    Filed: August 18, 2022
    Publication date: March 30, 2023
    Inventors: JINHO HYUN, HEECHANG YOON, HYOUNG SUB LEE, HYEMIN LEE
  • Publication number: 20220344595
    Abstract: A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode and including a first layer, wherein the first electrode has a work function value of about ?5.5 eV to about ?6.1 eV, and the interlayer includes a second layer doped with a non-lead-based perovskite compound.
    Type: Application
    Filed: December 7, 2021
    Publication date: October 27, 2022
    Inventors: Heechang Yoon, Dongchan Kim, Yoonseok Ka, Jiyoung Moon, Haemyeong Lee, Yoonhyeung Cho
  • Publication number: 20220344591
    Abstract: A method of forming a perovskite thin film and a light-emitting device including a layer manufactured by the method.
    Type: Application
    Filed: October 20, 2021
    Publication date: October 27, 2022
    Inventors: Yoonseok Ka, Dongchan Kim, Jiyoung Moon, Heechang Yoon
  • Publication number: 20220149310
    Abstract: A light-emitting device and an electronic apparatus including the same are provided. The light-emitting device includes: a first electrode; a second electrode facing the first electrode; m emission units stacked between the first electrode and the second electrode and including an emission layer; and m?1 charge generation layers each between two neighboring emission units from among the m emission units, wherein m is an integer of 2 or more, at least one of the m emission units includes an inorganic mixed layer between the first electrode and the emission layer, and the inorganic mixed layer includes an inorganic insulating material and an inorganic semiconductor material.
    Type: Application
    Filed: October 13, 2021
    Publication date: May 12, 2022
    Inventors: Dongchan Kim, Donghui Lee, Chulsoon Lee, Haemyeong Lee, Wonsuk Han, Yoonseok Ka, Jiyoung Moon, Jihwan Yoon, Heechang Yoon, Jihye Lee, Hakchoong Lee, Yoonhyeung Cho, Myungsuk Han
  • Publication number: 20210320274
    Abstract: A light-emitting device and an apparatus including the same include a first electrode, a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes m emission units and (m?1) charge generating units, each of the charge generating units being between the emission units that are adjacent to each other, m is a natural number of 2 or greater, at least one of the (m?1) charge generating units includes an n-type charge generating layer, a p-type charge generating layer, and a p-type hole injection layer, wherein the n-type charge generating layer includes an n-type organic compound and a metal material, and wherein the p-type charge generating layer and the p-type hole injection layer each independently include an inorganic semiconductor material.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 14, 2021
    Inventors: Dongchan Kim, Jiyoung Moon, Heechang Yoon, Jihye Lee, Hakchoong Lee, Haemyeong Lee, Myungsuk Han, Jihwan Yoon, Jonghyuk Lee, Yoonhyeung Cho
  • Publication number: 20210210711
    Abstract: A light-emitting device includes a first electrode; a second electrode facing the first electrode; m emission units between the first electrode and the second electrode; and m?1 charge-generating unit(s) between adjacent ones of the emission units, where m is a natural number of 2 or more. The emission units each include an emission layer. At least one of the charge-generating unit(s) includes an n-type charge-generating layer and a p-type charge-generating layer; and the n-type charge-generating layer includes a first material and a second material. The first material includes an organic electron transport compound; and the second material includes at least one selected from an alkali metal, an alkali metal alloy, an alkaline earth metal, an alkaline earth metal alloy, a lanthanide metal, and a lanthanide metal alloy. The light-emitting device may have improved hole and electron balance, a decreased driving voltage, and excellent efficiency and/or lifespan characteristics.
    Type: Application
    Filed: September 26, 2020
    Publication date: July 8, 2021
    Inventors: Dongchan KIM, Jiyoung MOON, Heechang YOON, Jihye LEE, Hakchoong LEE, Haemyeong LEE, Yoonhyeung CHO, Myungsuk HAN, Jihwan YOON, Jonghyuk LEE