Patents by Inventor Seongmi CHO

Seongmi CHO 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: 11968897
    Abstract: The present specification relates to a hetero-cyclic compound represented by the following Chemical Formula 1, and an organic light emitting device including the same. Such hetero-cyclic compound used as a material for an organic material layer of an organic light emitting device improves efficiency, achieves low driving voltage, and/or improves service life characteristics. [Chemical Formula 1] wherein R1 to R5, r3 to r5, L1, and Ar1 are defined therein.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: April 23, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Yongbum Cha, Seongmi Cho, Jungbum Kim, Sung Kil Hong, Jiwon Kwak
  • Patent number: 11851423
    Abstract: Provided is a heterocyclic compound Chemical Formula 1 or 2: and an organic light emitting device comprising the same.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: December 26, 2023
    Assignee: LG Chem, Ltd.
    Inventors: Min Young Kang, Tae Yoon Park, Seongmi Cho, Jeong Wook Mun, Min Woo Jung, Jung Ha Lee
  • Publication number: 20230329106
    Abstract: The present specification relates to an organic light emitting element comprising: an anode; a cathode disposed opposite to the anode; and a light emitting layer disposed between the anode and the cathode, wherein the light emitting layer comprises: a host including a P-type host and an N-type host for generating an exciplex; and a phosphorescent dopant, and the host including the P-type host and the N-type host for generating an exciplex emits photoluminescence light having a longer wavelength than that emitted from each of the P-type host and the N-type host.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 12, 2023
    Inventors: Minseung CHUN, Sang Young JEON, Tae Yoon PARK, Seongmi CHO
  • Patent number: 11773259
    Abstract: Provided is a polycarbonate composition comprising a polycarbonate and a light blocking agent, and an optical product formed therefrom. The polycarbonate composition has a low yellow index, unlike conventional yellowish blue light-blocking products, and thus various colors can be implemented. Accordingly, it is possible to provide optical products with various colors, and the polycarbonate composition is very suitable for spectacles required to have high transparency and to block blue light that is harmful to eyes.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: October 3, 2023
    Assignee: LG Chem, Ltd.
    Inventors: Young In Yang, Byoungkue Jeon, Mooho Hong, Seongmi Cho, Hoyong Lee, Jihye Jung
  • Patent number: 11751473
    Abstract: The present specification relates to an organic light emitting device including: an anode; a cathode disposed to face the anode; and a light emitting layer disposed between the anode and the cathode, in which the light emitting layer includes: a host including a P-type host and an N-type host, which produce an exciplex; and a phosphorescent dopant, and the host including the P-type host and the N-type host, which produce an exciplex, emits a photoluminescence light with a longer wavelength than a wavelength of each of the P-type host and the N-type host.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: September 5, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Minseung Chun, Sang Young Jeon, Tae Yoon Park, Seongmi Cho
  • Publication number: 20230146653
    Abstract: Provided is a low sublimation temperature heterocyclic compound of Chemical Formula 1: wherein, in Chemical Formula 1, adjacent one or more pairs of * bond to X1 and X2 of the following Chemical Formula 2: where * means the part of Chemical Formula 1 bonding to X1 and X2, and the substituents are as defined in the specification, and an organic light emitting device including the same, whereby the heterocyclic compound of Chemical Formula 1 increases efficiency and stability of the organic light emitting device.
    Type: Application
    Filed: April 15, 2021
    Publication date: May 11, 2023
    Inventors: Hanbit JANG, Seongmi CHO, Hoyong LEE, Seonkyoung SON, Jaemyeng JEONG, Seoyoung IM
  • Patent number: 11641778
    Abstract: Provided are a compound of Chemical Formula 1: and an organic light emitting device including the same.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: May 2, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jungha Lee, Dong Hoon Lee, Jungoh Huh, Seongmi Cho, Dong Uk Heo, Min Woo Jung
  • Patent number: 11634414
    Abstract: Provided is a hetero-cyclic compound of Chemical Formula 1: and an organic light emitting device comprising the same.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: April 25, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Seongmi Cho, Wanpyo Hong, Dong Hoon Lee, Jungoh Huh, Min Woo Jung, Jungha Lee
  • Patent number: 11581494
    Abstract: Provided is an organic light emitting device, comprising: an anode; a cathode disposed opposite to the anode; and one or more organic material layers disposed between the anode and cathode, the organic material layer including a light emitting layer that includes a compound of Chemical Formula 1 and a compound Chemical Formula 2: wherein: one of R21, R22, R23, and R24 is -L21-Ar1, and the remaining are hydrogen; and one of R31, R32, R33, and R34 is -L22-Ar2, and the remaining are hydrogen; excluding compounds where: R21 is -L21-Ar1 and R31 is -L22-Ar2, R22 is -L21-Ar1 and R32 is -L22-Ar2, R23 is -L21-Ar1 and R33 is -L22-Ar2, or R24 is -L21-Ar1 and R34 is -L22Ar2; L21 and L22 each is a single bond, or a substituted or unsubstituted C6-60 arylene; X2 is O or S; and Ar1 is Chemical Formula 3:
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: February 14, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jungha Lee, Tae Yoon Park, Seongmi Cho, Dong Hoon Lee, Min Woo Jung, Su Jin Han, Seoyeon Kim
  • Patent number: 11563184
    Abstract: Provided is a heterocyclic compound of Chemical Formula 1: and an organic light emitting device including the same.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: January 24, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Min Woo Jung, Dong Hoon Lee, Jungoh Huh, Seongmi Cho, Jungha Lee
  • Publication number: 20220186025
    Abstract: Provided is a polycarbonate composition comprising a polycarbonate and a light blocking agent, and an optical product formed therefrom. The polycarbonate composition has a low yellow index, unlike conventional yellowish blue light-blocking products, and thus various colors can be implemented. Accordingly, it is possible to provide optical products with various colors, and the polycarbonate composition is very suitable for spectacles required to have high transparency and to block blue light that is harmful to eyes.
    Type: Application
    Filed: November 25, 2020
    Publication date: June 16, 2022
    Inventors: Young In YANG, Byoungkue JEON, Mooho HONG, Seongmi CHO, Hoyong LEE, Jihye JUNG
  • Patent number: 11299466
    Abstract: The present specification relates to a compound of Chemical Formula 1 and an organic electronic device comprising the same.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: April 12, 2022
    Inventors: Min Woo Jung, Dong Hoon Lee, Tae Yoon Park, Jungoh Huh, Boonjae Jang, Seongmi Cho, Minyoung Kang, Dong Uk Heo, Miyeon Han, Jungha Lee
  • Patent number: 11111231
    Abstract: The present specification provides a heterocyclic compound and an organic light emitting device comprising the same.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 7, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hoyong Lee, Seongmi Cho, Kongkyeom Kim, Sang Young Jeon, Minseung Chun, Hyoung Seok Kim, Dongheon Kim
  • Patent number: 11001752
    Abstract: The present specification provides a novel compound capable of greatly enhancing lifespan, efficiency, electrochemical stability and thermal stability of an organic electronic device, and an organic electronic device containing the compound in an organic compound layer.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: May 11, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Yongbum Cha, Sung Kil Hong, Seongmi Cho
  • Publication number: 20210002294
    Abstract: The present specification relates to a compound represented by Formula 1, and a color conversion film, a backlight unit, and a display device each including the compound.
    Type: Application
    Filed: November 8, 2019
    Publication date: January 7, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Seonkyoung SON, Seongmi CHO, Hoyong LEE, Cheol Jun SONG
  • Patent number: 10873035
    Abstract: The present specification relates to a hetero-cyclic compound and an organic light emitting device including the same.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: December 22, 2020
    Inventors: Yongbum Cha, Seongmi Cho, Jungbum Kim, Sung Kil Hong, Jiwon Kwak
  • Patent number: 10822330
    Abstract: The present specification relates to a hetero-cyclic compound and an organic light emitting device including the same.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 3, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Yongbum Cha, Seongmi Cho, Jungbum Kim, Sung Kil Hong, Jiwon Kwak
  • Patent number: 10800969
    Abstract: The present specification relates to a hetero-cyclic compound and an organic light emitting device including the same.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: October 13, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Yongbum Cha, Seongmi Cho, Sung Kil Hong, Jungbum Kim, Sung Jae Lee
  • Publication number: 20200259098
    Abstract: Provided is an organic light emitting device, comprising: an anode; a cathode disposed opposite to the anode; and one or more organic material layers disposed between the anode and cathode, the organic material layer including a light emitting layer that includes a compound of Chemical Formula 1 and a compound Chemical Formula 2: wherein: one of R21, R22, R23, and R24 is -L21-Ar1, and the remaining are hydrogen; and one of R31, R32, R33, and R34 is -L22-Ar2, and the remaining are hydrogen; excluding compounds where: R21 is -L21-Ar1 and R31 is -L22-Ar2, R22 is -L21-Ar1 and R32 is -L22-Ar2, R23 is -L21-Ar1 and R33 is -L22-Ar2, or R24 is -L21-Ar1 and R34 is -L22Ar2; L21 and L22 each is a single bond, or a substituted or unsubstituted C6-60 arylene; X2 is O or S; and Ar1 is Chemical Formula 3:
    Type: Application
    Filed: December 27, 2018
    Publication date: August 13, 2020
    Inventors: Jungha LEE, Tae Yoon PARK, Seongmi CHO, Dong Hoon LEE, Min Woo JUNG, Su Jin HAN, Seoyeon KIM
  • Patent number: 10727430
    Abstract: An embodiment of the present invention discloses an organic light emitting diode comprising an organic layer consisting of one layer or more, which includes a transparent electrode, a reflective electrode provided facing the transparent elector, and a light emitting layer provided between the transparent electrode and the reflective electrode. Here, the light emitting layer includes two or more light emitting materials and is characterized in that the difference between the dipole moment value of one light emitting material and the dipole moment value of another light emitting material from among the light emitting materials is 1.5 Debye or more.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: July 28, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hwakyung Kim, Chang Hwan Kim, Minseung Chun, Seongmi Cho, Dongheon Kim, Wooyung Jung