Patents by Inventor Eunkyung Koh

Eunkyung Koh 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: 11937477
    Abstract: A display device includes pixel circuits disposed on a substrate, each of the pixel circuits comprising a transistor and a storage capacitor, display elements electrically connected to the pixel circuits, and a metal layer disposed between the substrate and the pixel circuits, the metal layer comprising through-holes, wherein the through-holes of the metal layer include a first through-hole, and a second through-hole disposed adjacent to the first through-hole.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eunkyung Koh, Seungin Baek, Sanggu Lee, Daewook Kim, Byongug Park, Hyunjin Son, Jewon Yoo, Sujin Choi
  • Publication number: 20230269982
    Abstract: A display device includes pixel circuits disposed on a substrate, each of the pixel circuits comprising a transistor and a storage capacitor, display elements electrically connected to the pixel circuits, and a metal layer disposed between the substrate and the pixel circuits, the metal layer comprising through-holes, wherein the through-holes of the metal layer include a first through-hole, and a second through-hole disposed adjacent to the first through-hole.
    Type: Application
    Filed: April 20, 2023
    Publication date: August 24, 2023
    Applicant: Samsung Display Co., Ltd.
    Inventors: Eunkyung KOH, Seungin BAEK, Sanggu LEE, Daewook KIM, Byongug PARK, Hyunjin SON, Jewon YOO, Sujin CHOI
  • Publication number: 20230225199
    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, an interlayer between the first electrode and the second electrode and including an emission layer, and a capping layer. The emission layer includes a first emitter, the first emitter emits first light having a first emission spectrum, the capping layer is in the path on which the first light travels, an emission peak wavelength of the first light is from about 520 nm to about 550 nm. The first emitter includes iridium, the capping layer includes an amine-containing compound, and the value of ratio of CIEy to reflective index (RCR value) of the first light extracted to the outside through the capping layer is 38 or less, and the RCR value is calculated according to CIEy/R(cap)×100.
    Type: Application
    Filed: January 9, 2023
    Publication date: July 13, 2023
    Inventors: Youngmi Cho, Hyojoo Jung, Eunkyung Koh, Jinoh Kwag, Yongjo Kim, Younho Han
  • Patent number: 11653534
    Abstract: A display device includes pixel circuits disposed on a substrate, each of the pixel circuits comprising a transistor and a storage capacitor, display elements electrically connected to the pixel circuits, and a metal layer disposed between the substrate and the pixel circuits, the metal layer comprising through-holes, wherein the through-holes of the metal layer include a first through-hole, and a second through-hole disposed adjacent to the first through-hole.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 16, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eunkyung Koh, Seungin Baek, Sanggu Lee, Daewook Kim, Byongug Park, Hyunjin Son, Jewon Yoo, Sujin Choi
  • Publication number: 20210280661
    Abstract: A display device includes pixel circuits disposed on a substrate, each of the pixel circuits comprising a transistor and a storage capacitor, display elements electrically connected to the pixel circuits, and a metal layer disposed between the substrate and the pixel circuits, the metal layer comprising through-holes, wherein the through-holes of the metal layer include a first through-hole, and a second through-hole disposed adjacent to the first through-hole.
    Type: Application
    Filed: September 29, 2020
    Publication date: September 9, 2021
    Applicant: Samsung Display Co., Ltd.
    Inventors: Eunkyung KOH, Seungin BAEK, Sanggu LEE, Daewook KIM, Byongug PARK, Hyunjin SON, Jewon YOO, Sujin CHOI
  • Patent number: 11043646
    Abstract: An organic light-emitting device including: a first electrode, a hole transport region including a first hole transport layer (HTL), an emission layer, an electron transport region; and a second electrode; wherein the first HTL includes a first compound and a second compound, the emission layer includes a third compound and a fourth compound, the electron affinity of the second compound is greater than the electron affinity of the first compound, a lowest unoccupied molecular orbital (LUMO) energy level of the fourth compound is greater than a LUMO energy level of the third compound, the second compound and the third compound are different from each other, and the minimum anionic dissociation energy of the second compound is greater than the triplet energy of the third compound.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: June 22, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sunghun Lee, Seulong Kim, Illsoo Park, Hyosup Shin, Sunwoo Kang, Eunkyung Koh, Minkyung Kim, Taekyung Kim, Jaeyong Lee
  • Publication number: 20170069864
    Abstract: An organic light-emitting device including: a first electrode, a hole transport region including a first hole transport layer (HTL), an emission layer, an electron transport region; and a second electrode; wherein the first HTL includes a first compound and a second compound, the emission layer includes a third compound and a fourth compound, the electron affinity of the second compound is greater than the electron affinity of the first compound, a lowest unoccupied molecular orbital (LUMO) energy level of the fourth compound is greater than a LUMO energy level of the third compound, the second compound and the third compound are different from each other, and the minimum anionic dissociation energy of the second compound is greater than the triplet energy of the third compound.
    Type: Application
    Filed: April 21, 2016
    Publication date: March 9, 2017
    Inventors: Sunghun Lee, Seulong Kim, Illsoo Park, Hyosup Shin, Sunwoo Kang, Eunkyung Koh, Minkyung Kim, Taekyung Kim, Jaeyong Lee