Patents by Inventor Taewoo JEON

Taewoo JEON 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).

  • Organic electroluminescence device
    Patent number: 12232418
    Abstract: An organic electroluminescence device including an anode, a cathode and a light-emission layer. The light-emission layer includes a stack of a blue light-emission layer and a red/green light concurrent-emission sub-stack. Further, the red/green light concurrent-emission sub-stack includes a stack of a red light-emission layer and a green light-emission layer. The red light-emission layer contains a red host compound including an arylamino group-substituted spirobisfluorene compound. Further, the green light-emission layer contains a green host compound including a mixture between a first green host compound and a second green host compound. Also, the first green host compound includes a bis-carbazole based compound, and the second green host compound includes a carbazole-based compound.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: February 18, 2025
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hyeseung Kang, Dohan Kim, Jungkeun Kim, Seungryong Joung, Ki-Woog Song, Jungsoo Park, Seongsu Jeon, Taewoo Jeon
  • Organic light-emitting display device
    Patent number: 11024821
    Abstract: One embodiment of the present disclosure provides an organic light-emitting element corresponding to each pixel region. The organic light-emitting element includes a hole transport layer, a first light-emitting layer, a second light-emitting layer, a third light-emitting layer, a fourth light-emitting layer, and an electron transport layer. The first light-emitting layer includes a first dopant corresponding to a first color and a first host. The second light-emitting layer includes a second dopant corresponding to a second color different from the first color and a second host different from the first host. The third light-emitting layer includes the first dopant and the second host, and the fourth light-emitting layer includes the second dopant and the second host.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: June 1, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seongsu Jeon, Seungryong Joung, Taewoo Jeon, Mi-Young Han
  • ORGANIC ELECTROLUMINESCENCE DEVICE
    Publication number: 20200106026
    Abstract: An organic electroluminescence device including an anode, a cathode and a light-emission layer. The light-emission layer includes a stack of a blue light-emission layer and a red/green light concurrent-emission sub-stack. Further, the red/green light concurrent-emission sub-stack includes a stack of a red light-emission layer and a green light-emission layer. The red light-emission layer contains a red host compound including an arylamino group-substituted spirobisfluorene compound. Further, the green light-emission layer contains a green host compound including a mixture between a first green host compound and a second green host compound. Also, the first green host compound includes a bis-carbazole based compound, and the second green host compound includes a carbazole-based compound.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 2, 2020
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hyeseung Kang, Dohan Kim, Jungkeun Kim, Seungryong Joung, Ki-Woog Song, Jungsoo Park, Seongsu Jeon, Taewoo Jeon
  • ORGANIC LIGHT-EMITTING DISPLAY DEVICE
    Publication number: 20190207138
    Abstract: One embodiment of the present disclosure provides an organic light-emitting element corresponding to each pixel region. The organic light-emitting element includes a hole transport layer, a first light-emitting layer, a second light-emitting layer, a third light-emitting layer, a fourth light-emitting layer, and an electron transport layer. The first light-emitting layer includes a first dopant corresponding to a first color and a first host. The second light-emitting layer includes a second dopant corresponding to a second color different from the first color and a second host different from the first host. The third light-emitting layer includes the first dopant and the second host, and the fourth light-emitting layer includes the second dopant and the second host.
    Type: Application
    Filed: December 19, 2018
    Publication date: July 4, 2019
    Inventors: Seongsu JEON, Seungryong JOUNG, Taewoo JEON, Mi-Young HAN