Patents by Inventor Yeon-Gun LEE

Yeon-Gun 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).

  • Patent number: 11912916
    Abstract: The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having lower operating voltage, higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: February 27, 2024
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hyun Kim, Ji-Song Jun, Jeong-Hwan Jeon, Yeon-Gun Lee, Seon-Jin Hwang, Young-Jun Cho
  • Publication number: 20230203075
    Abstract: Disclosed is a novel organometallic compound in which a main ligand (LA) has a fused ring structure including a thiophene group. The organometallic compound acts as a dopant of a phosphorescent light-emitting layer of an organic light-emitting diode. Thus, an operation voltage of the diode is lowered, and luminous efficiency and a lifespan thereof are improved.
    Type: Application
    Filed: December 23, 2022
    Publication date: June 29, 2023
    Applicants: LG DISPLAY CO., LTD., ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Kusun CHOUNG, Gyuhyeong KIM, Yoojeong JEONG, Hansol PARK, Kyoung-Jin PARK, Hyun KIM, Jin Ri HONG, Yeon Gun LEE
  • Publication number: 20230203074
    Abstract: Disclosed is a novel organometallic compound represented by following Chemical Formula 1. The organometallic compound acts as a dopant of a phosphorescent light-emitting layer of an organic light-emitting diode.
    Type: Application
    Filed: December 19, 2022
    Publication date: June 29, 2023
    Applicants: LG DISPLAY CO., LTD., ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Hansol PARK, Yoojeong JEONG, Kusun CHOUNG, Kyoung-Jin PARK, Hyun KIM, Jin Ri HONG, Yeon Gun LEE
  • Publication number: 20230209989
    Abstract: Disclosed is a novel organometallic compound in which a main ligand (LA) has a fused ring structure including a thiophene group. The organometallic compound acts as a dopant of a phosphorescent light-emitting layer of an organic light-emitting diode. Thus, an operation voltage of the diode is lowered, and luminous efficiency and a lifespan thereof are improved.
    Type: Application
    Filed: December 23, 2022
    Publication date: June 29, 2023
    Applicants: LG DISPLAY CO., LTD., ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Yoojeong JEONG, Hansol PARK, Kusun CHOUNG, Kyoung-Jin PARK, Hyun KIM, Jin Ri HONG, Yeon Gun LEE
  • Publication number: 20230117909
    Abstract: Disclosed is an organometallic compound represented by a following Chemical Formula 1. The organometallic compound acts as a dopant of a light-emitting layer of an organic light-emitting diode. Thus, operation voltage of the diode is lowered, and luminous efficiency and lifespan thereof are improved: Ir(LA)m(LB)n??[Chemical Formula 1] where in the Chemical Formula 1, LA represents a main ligand, and is one selected from a group consisting of Chemical Formula 2-1, Chemical Formula 2-2, and Chemical Formula 2-3, LB denotes an ancillary ligand represented by a Chemical Formula 3, each of m and n denotes a number of the ligands bound to Ir (iridium), and m is 1, 2 or 3, and n is 0, 1 or 2, and a sum of m and n is 3.
    Type: Application
    Filed: July 26, 2022
    Publication date: April 20, 2023
    Applicants: LG DISPLAY CO., LTD., ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Kusun CHOUNG, Hansol PARK, Yoojeong JEONG, Kyoung-Jin PARK, Hyun KIM, Jin Ri HONG, Yeon Gun LEE
  • Publication number: 20230110454
    Abstract: Disclosed is an organometallic compound represented by a following Chemical Formula 1. The organometallic compound acts as a dopant of a light-emitting layer of an organic light-emitting diode.
    Type: Application
    Filed: July 25, 2022
    Publication date: April 13, 2023
    Applicants: LG DISPLAY CO., LTD., ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Kusun CHOUNG, Hansol PARK, Yoojeong JEONG, Kyoung-Jin PARK, Hyun KIM, Jin Ri HONG, Yeon Gun LEE
  • Patent number: 11605781
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having high luminous efficiency and/or long lifespan properties can be provided compared to conventional organic electroluminescent devices.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: March 14, 2023
    Inventors: Hong-Se Oh, Tae-Jin Lee, Jeong-Eun Yang, Yeon-Gun Lee
  • Publication number: 20220396533
    Abstract: The present disclosure provides a method for preparing a deuterated organic compound in good yield even though a reduced amount of benzene-D6 is used by using a solvent comprising a benzene-based compound not substituted with deuterium or partially substituted with deuterium.
    Type: Application
    Filed: May 25, 2022
    Publication date: December 15, 2022
    Inventors: Chi-Sik Kim, Yeon Gun Lee, DaiKyu Kim, Soo-Yong Lee, Seung-Hoon Yoo
  • Publication number: 20210363419
    Abstract: The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having lower operating voltage, higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.
    Type: Application
    Filed: July 1, 2019
    Publication date: November 25, 2021
    Inventors: Hyun Kim, Ji-Song JUN, Jeong-Hwan JEON, Yeon-Gun LEE, Seon-Jin HWANG, Young-Jun CHO
  • Publication number: 20210193925
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having high luminous efficiency and/or long lifespan properties can be provided compared to conventional organic electroluminescent devices.
    Type: Application
    Filed: November 21, 2018
    Publication date: June 24, 2021
    Inventors: Hong-Se OH, Tae-Jin LEE, Jeong-Eun YANG, Yeon-Gun LEE
  • Patent number: 10950806
    Abstract: The present disclosure relates to an organic electroluminescent compound for near-IR light emission, an organic electroluminescent material and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device with near-IR light emission.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: March 16, 2021
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hyun Kim, Hong-Yeop Na, Yeon-Gun Lee, Jeong-Hwan Jeon, Seung-Ae Kim
  • Publication number: 20200266365
    Abstract: The present disclosure relates to an organic electroluminescent compound for near-IR light emission, an organic electroluminescent material and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device with near-IR light emission.
    Type: Application
    Filed: November 7, 2018
    Publication date: August 20, 2020
    Inventors: Hyun KIM, Hong-Yeop NA, Yeon-Gun LEE, Jeong-Hwan JEON, Seung-Ae KIM
  • Patent number: 10629824
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present disclosure has a high glass transition temperature that can be used in a deposition process. In addition, an organic electroluminescent device having low driving voltage, a high luminous efficiency and/or long lifespan characteristic can be provided with the use of the organic electroluminescent compound according to the present disclosure.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: April 21, 2020
    Assignee: Rohm and Haas Electronic Materials Korea Ltd
    Inventors: Doo-Hyeon Moon, Yeon-Gun Lee
  • Publication number: 20190296249
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present disclosure has a high glass transition temperature that can be used in a deposition process. In addition, an organic electroluminescent device having low driving voltage, a high luminous efficiency and/or long lifespan characteristic can be provided with the use of the organic electroluminescent compound according to the present disclosure.
    Type: Application
    Filed: December 12, 2017
    Publication date: September 26, 2019
    Inventors: Doo-Hyeon MOON, Yeon-Gun LEE