Patents Assigned to DuPont Specialty Materials Korea Ltd.
  • Organic electroluminescent compound, a plurality of host materials and organic electroluminescent device comprising the same
    Patent number: 12258352
    Abstract: The present disclosure relates to an organic electroluminescent compound represented by formula 2? or formula 2?, a plurality of host materials comprising at least one first host compound and at least one second host compound, and an organic electroluminescent device comprising the same. An organic electroluminescent device having improved driving voltage, luminous efficiency, power efficiency and/or lifespan properties can be provided by including the organic electroluminescent compound or a specific combination of compounds according to the present disclosure as a host material(s).
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: March 25, 2025
    Assignee: DuPont Specialty Materials Korea Ltd.
    Inventors: So-Young Jung, Jin-Ri Hong, Doo-Hyeon Moon, Sang-Hee Cho, Su-Hyun Lee, Du-Yong Park, Mi-Ja Lee
  • Organic electroluminescent compound and organic electroluminescent device comprising the same
    Patent number: 12262633
    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, an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifespan characteristics can be provided.
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: March 25, 2025
    Assignee: DuPont Specialty Materials Korea Ltd.
    Inventors: Jin-Ri Hong, Doo-Hyeon Moon, Du-Yong Park, Young-Mook Lim
  • Coating composition for forming resist underlayer film for EUV lithography process
    Patent number: 12228858
    Abstract: A monomer represented by Chemical Formula (1): wherein, X, Y, and Z are the same as described in the specification, and the polymer including repeat units derived from the monomer.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: February 18, 2025
    Assignee: DUPONT SPECIALTY MATERIALS KOREA LTD
    Inventors: Jae Hwan Sim, Suwoong Kim, Jin Hong Park, Myung Yeol Kim, Yoo-Jin Ghang, Jae-Bong Lim
  • ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DIODE INCLUDING THE SAME
    Publication number: 20240392184
    Abstract: An organometallic compound represented by Chemical Formula 1, Ir(LA)m(LB)n, and an organic light-emitting diode including the same. The organometallic compound may act as a dopant of a light-emitting layer of the organic light-emitting diode. An operation voltage of the device may be lowered, and luminous efficiency and a lifespan thereof may be improved.
    Type: Application
    Filed: May 14, 2024
    Publication date: November 28, 2024
    Applicants: LG Display Co., Ltd., DuPont Specialty Materials Korea Ltd.
    Inventors: Yoojeong Jeong, Misang Yoo, Hansol Park, Kusun Choung, Soonjae Hwang, Kyoung-Jin PARK, Hyun Kim, Soo-Yong LEE, Samuel KIM
  • ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DIODE INCLUDING THE SAME
    Publication number: 20240376376
    Abstract: An organometallic compound represented by Chemical Formula 1, Ir(LA)m(LB)n, and an organic light-emitting diode including the same. The organometallic compound may act as a dopant of a light-emitting layer of the organic light-emitting diode. An operation voltage of the device may be lowered, and luminous efficiency and a lifespan thereof may be improved.
    Type: Application
    Filed: May 7, 2024
    Publication date: November 14, 2024
    Applicants: LG Display Co., Ltd., DuPont Specialty Materials Korea Ltd.
    Inventors: Kusun Choung, Misang Yoo, Hansol Park, Yoojeong Jeong, Soonjae Hwang, Kyoung-Jin PARK, Hyun Kim, Jin Ri HONG, Yeon Gun LEE
  • ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DIODE INCLUDING THE SAME
    Publication number: 20240381758
    Abstract: An organometallic compound represented by Chemical Formula 1, Ir(LA)m(LB)n, and an organic light-emitting diode including the same. The organometallic compound may act as a dopant of a light-emitting layer of the organic light-emitting diode. An operation voltage of the device may be lowered, and luminous efficiency and a lifespan thereof may be improved.
    Type: Application
    Filed: May 7, 2024
    Publication date: November 14, 2024
    Applicants: LG Display Co., Ltd., DuPont Specialty Materials Korea Ltd.
    Inventors: Kusun Choung, Misang Yoo, Hansol Park, Yoojeong Jeong, Soonjae Hwang, Kyoung-Jin PARK, Hyun Kim, Jin Ri HONG, Yeon Gun LEE
  • UV curable silicone composition and an encapsulant or a sheet film thereof
    Patent number: 12104061
    Abstract: A UV curable silicone composition has exceptional curability by ultraviolet irradiation.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: October 1, 2024
    Assignees: DuPont Toray Specialty Materials Kabushiki Kaisha, DuPont Electronic Materials International, LLC, DuPont Specialty Materials Korea Ltd.
    Inventors: Shunya Takeuchi, Anna Ya Ching Feng, Yutaka Oka, Jung Hye Chae