Patents by Inventor Yongguk LEE

Yongguk LEE 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).

  • COMPOUND, MATERIAL FOR ORGANIC ELECTROLUMINESCENCENT ELEMENT, ORGANIC ELECTROLUMINESCENCENT ELEMENT, AND ELECTRONIC DEVICE
    Publication number: 20230301177
    Abstract: A compound represented by the following formula (1): where the symbols in the formula (1) are defined in the description, an organic electroluminescent device containing the compound, and an electronic device including the organic electroluminescent device.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Takeshi IKEDA, Takuto FUKAMI, Hiroaki ITOI, Yusuke TAKAHASHI, Shota TANAKA, Yongguk LEE, Tsukasa SAWATO
  • Organic electroluminescent element and electronic device
    Patent number: 11723266
    Abstract: An organic electroluminescence device includes: an anode; a cathode; a first emitting layer, and a second emitting layer, in which the first emitting layer includes a first host material in a form of a first compound represented by a formula (1), the second emitting layer includes a second host material in a form of a second compound represented by a formula (2) and having at least one group represented by a formula (21), and the first emitting layer is in direct contact with the second emitting layer.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: August 8, 2023
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Ryoji Maeda, Satomi Tasaki, Kazuki Nishimura, Yongguk Lee
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ELECTRONIC APPARATUS
    Publication number: 20230047477
    Abstract: An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 16, 2023
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Taro YAMAKI, Hiroaki ITOI, Yuki NAKANO, Yuichiro KAWAMURA, Ryoji MAEDA, Kazuki NISHIMURA, Yongguk LEE
  • ORGANIC ELECTROLUMINESCENCE ELEMENT, COMPOSITION, POWDER, ELECTRONIC EQUIPMENT, AND NOVEL COMPOUND
    Publication number: 20220393110
    Abstract: An organic electroluminescence device including: a cathode; an anode; and at least one emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, wherein the first host material is a compound represented by the following formula (1), the second host material is a compound represented by the following formula (2), and the first host material and the second host material are different compounds.
    Type: Application
    Filed: December 25, 2020
    Publication date: December 8, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yongguk LEE, Ryoji MAEDA, Yuki NAKANO, Hiroaki ITOI
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ELECTRONIC APPARATUS
    Publication number: 20220376183
    Abstract: An organic electroluminescence device, comprising a cathode, an anode, and at least one emitting layer disposed between the cathode and the anode, wherein the emitting layer contains a first host material, a second host material, and a dopant material, wherein the first host material is a compound represented by the following formula (1), the second host material is a compound represented by the following formula (2), and one or more selected from the group consisting of the compound represented by the formula (1) and the compound represented by the formula (2) have at least one deuterium atom.
    Type: Application
    Filed: December 25, 2020
    Publication date: November 24, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Yongguk LEE, Ryoji MAEDA, Yuki NAKANO, Hiroaki ITOI
  • COMPOSITION, POWDER, ORGANIC ELECTROLUMINESCENCE DEVICE, METHOD OF FABRICATING ORGANIC ELECTROLUMINESCENCE DEVICE, AND ELECTRONIC APPARATUS
    Publication number: 20220344594
    Abstract: A composition comprising a compound represented by the following formula (1) and a compound represented by the following formula (2), provided that the compound represented by the formula (1) and the compound represented by the formula (2) are different compounds:
    Type: Application
    Filed: April 12, 2022
    Publication date: October 27, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Takeshi IKEDA, Yongguk LEE
  • Organic electroluminescence device and electronic apparatus
    Patent number: 11482675
    Abstract: An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: October 25, 2022
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Taro Yamaki, Hiroaki Itoi, Yuki Nakano, Yuichiro Kawamura, Ryoji Maeda, Kazuki Nishimura, Yongguk Lee
  • ORGANIC ELECTROLUMINESCENCE DEVICE AND ELECTRONIC APPARATUS
    Publication number: 20220285625
    Abstract: An organic electroluminescence device comprising: an anode, a cathode, and an emitting region between the anode and the cathode, wherein the emitting region comprises a first emitting layer and a second emitting layer, the first emitting layer and the second emitting layer are directly adjacent to each other, the first emitting layer is between the anode and the second emitting layer, and one of the first emitting layer and the second emitting layer comprises a compound having at least one deuterium atom.
    Type: Application
    Filed: May 5, 2022
    Publication date: September 8, 2022
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Satomi TASAKI, Taro YAMAKI, Hiroaki ITOI, Yuki NAKANO, Yuichiro KAWAMURA, Ryoji MAEDA, Kazuki NISHIMURA, Yongguk LEE
  • ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE
    Publication number: 20210091313
    Abstract: An organic electroluminescence device includes: an anode; a cathode; a first emitting layer, and a second emitting layer, in which the first emitting layer includes a first host material in a form of a first compound represented by a formula (1), the second emitting layer includes a second host material in a form of a second compound represented by a formula (2) and having at least one group represented by a formula (21), and the first emitting layer is in direct contact with the second emtting layer.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 25, 2021
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Ryoji MAEDA, Satomi TASAKI, Kazuki NISHIMURA, Yongguk LEE