Patents by Inventor Taejung YU

Taejung YU 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: 11476426
    Abstract: Disclosed is an organic light emitting device including a first electrode, a second electrode opposite to the first electrode, and at least one organic layer interposed between the first and second electrodes. The organic layer includes first and second compounds represented by Formulae A and B, respectively: The organic light emitting device exhibits low driving voltage, high efficiency, and long life. Due to these advantages, the organic light emitting device is useful in a variety of industrial applications, including displays and lighting systems.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: October 18, 2022
    Assignee: SFC CO., LTD.
    Inventors: Se-jin Lee, Taejung Yu, Seok-bae Park, Byung-sun Yang, Su-Jin Lee, Bong-Hyang Lee, Yeongtae Choi
  • Publication number: 20220002319
    Abstract: The present disclosure relates to a boron compound useful in an organic light-emitting diode and an organic light-emitting diode comprising same and, more particularly, to a boron compound represented by [Chemical Formula A] or [Chemical Formula B], wherein [Chemical Formula A] and [Chemical Formula B] are as defined in the description.
    Type: Application
    Filed: November 19, 2019
    Publication date: January 6, 2022
    Inventors: Se-Jin Lee, Bong-Hyang Lee, Taejung Yu, Yeong-Tae Choi, Kyung-Tae Kim
  • Publication number: 20210403490
    Abstract: The present disclosure relates to a boron compound useful in an organic light-emitting diode and an organic light-emitting diode comprising same and, more particularly, to a boron compound represented by [Chemical Formula A], wherein [Chemical Formula A] and [Chemical Formula C] are as defined in the description.
    Type: Application
    Filed: November 14, 2019
    Publication date: December 30, 2021
    Inventors: Se-Jin Lee, Bong-Hyang Lee, Taejung YU, Yeong-Tae Choi, Kyung-Tae Kim
  • Publication number: 20210408390
    Abstract: The present disclosure relates to a boron compound useful in an organic light-emitting diode and an organic light-emitting diode comprising same and, more particularly, to a boron compound represented by any one of [Chemical Formula A] to [Chemical Formula C], wherein [Chemical Formula A] to [Chemical Formula C] are as defined in the description.
    Type: Application
    Filed: November 18, 2019
    Publication date: December 30, 2021
    Inventors: Se-Jin Lee, Bong-Hyang LEE, Taejung Yu, Yeong-Tae Choi, Kyung-Tae Kim
  • Publication number: 20210376241
    Abstract: Disclosed are amine-substituted naphthalene derivatives and organic light emitting diodes including the same. In the organic light emitting diodes, at least one of the amine-substituted naphthalene derivatives is employed in a hole auxiliary layer interposed between a hole transport layer and a light emitting layer to enable efficient hole transport to the light emitting layer, achieving high luminous efficiency and long lifetime.
    Type: Application
    Filed: August 11, 2021
    Publication date: December 2, 2021
    Applicant: SFC CO., LTD.
    Inventors: Se-jin LEE, Bong-Hyang LEE, Taejung YU, Yeongtae CHOI, Dajung LEE
  • Patent number: 11075343
    Abstract: Disclosed is an organic light emitting compound represented by Formula 1: HAr1—(L)n—HAr2??(1); an organic light emitting device including the organic light emitting compound of Formula 1: and an organic light emitting device including the organic light emitting compound of Formula 1 as a first compound and a second compound represented by Formula 2: HAr3—(L)n—HAr4??(2) .
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: July 27, 2021
    Assignee: SFC CO., LTD.
    Inventors: Se-jin Lee, Taejung Yu, Seok-bae Park, Byung-sun Yang, Su-Jin Lee, Bong-Hyang Lee, Yeongtae Choi
  • Patent number: 10957865
    Abstract: Disclosed is an organic light emitting compound represented by Formula I: HAr1-(L)n-HAr2??(I). Also disclosed is an organic light emitting diode including the organic light emitting compound. Particularly, the organic light emitting diode employs the organic light emitting compound as a material for electron injection and transport. The organic light emitting diode can be driven at a low voltage and has improved life characteristics compared to conventional organic light emitting diodes. Due to these advantages, the organic light emitting diode is useful in a variety of industrial applications, including displays and lighting systems.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 23, 2021
    Assignee: SFC CO., LTD.
    Inventors: Yeongtae Choi, Se-jin Lee, Seok-bae Park, Taejung Yu, Byung-sun Yang, Dajung Lee
  • Publication number: 20210057655
    Abstract: Disclosed is an organic light emitting compound represented by Formula I: HAr1-(L)n-HAr2??(I) Also disclosed is an organic light emitting diode including the organic light emitting compound. Particularly, the organic light emitting diode employs the organic light emitting compound as a material for electron injection and transport. The organic light emitting diode can be driven at a low voltage and has improved life characteristics compared to conventional organic light emitting diodes. Due to these advantages, the organic light emitting diode is useful in a variety of industrial applications, including displays and lighting systems.
    Type: Application
    Filed: October 29, 2020
    Publication date: February 25, 2021
    Applicant: SFC CO., LTD.
    Inventors: Yeongtae CHOI, Se-jin LEE, Seok-bae PARK, Taejung YU, Byung-sun YANG, Dajung LEE
  • Publication number: 20200227644
    Abstract: Disclosed herein is an organic light-emitting diode comprising: a first electrode; a second electrode facing the first electrode; a light-emitting layer interposed between the first electrode and the second electrode, wherein the light-emitting layer contains at least one of fused ring compounds represented by Chemical Formula A and at least one of hetero ring compounds represented by Chemical Formula D, the Chemical formulas A and B being as defined in the description of the invention.
    Type: Application
    Filed: July 23, 2018
    Publication date: July 16, 2020
    Inventors: Se-Jin LEE, Seok-Bae PARK, Bong-Hyang LEE, Taejung YU, Yeong-Tae CHOI, Dajung LEE, Seongeun WOO
  • Patent number: 10526342
    Abstract: The present invention relates to an organic light-emitting compound represented by Chemical Formula A and an organic light-emitting device. In Chemical Formula A, X, Y, Z, and the substituents R1 to R8, and R11 to R20 are as defined in the specification.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: January 7, 2020
    Assignee: SFC CO., LTD.
    Inventors: Taejung Yu, Yeong-Tae Choi, Bong-Hyang Lee, Byung-Sun Yang, Se-Jin Lee
  • Patent number: 10529461
    Abstract: Disclosed are an organic heterocyclic compound represented by Chemical Formula A and an organic light-emitting diode comprising the same. wherein substituents R1 to R8, X1 to X4, W1, and Y1 are each as defined in the specification.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: January 7, 2020
    Assignee: SFC CO., LTD.
    Inventors: Se-jin Lee, Seok-Bae Park, Taejung Yu, Byung-sun Yang, Yeong-tae Choi
  • Publication number: 20190140177
    Abstract: Disclosed are amine-substituted naphthalene derivatives and organic light emitting diodes including the same. In the organic light emitting diodes, at least one of the amine-substituted naphthalene derivatives is employed in a hole auxiliary layer interposed between a hole transport layer and a light emitting layer to enable efficient hole transport to the light emitting layer, achieving high luminous efficiency and long lifetime.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 9, 2019
    Applicant: SFC CO., LTD.
    Inventors: Se-jin LEE, Bong-Hyang LEE, Taejung YU, Yeongtae CHOI, Dajung LEE
  • Publication number: 20180093962
    Abstract: Disclosed are an organic compound represented by any one of Chemical Formulas A to E and an organic light-emitting diode including the same. Chemical Formulas A to E are as described in the specification.
    Type: Application
    Filed: September 18, 2017
    Publication date: April 5, 2018
    Inventors: Yeong-Tae CHOI, Se-Jin LEE, Seok-Bae PARK, Taejung YU, Byung-Sun YANG, Dajung LEE
  • Publication number: 20180072753
    Abstract: The present invention relates to an organic light-emitting compound represented by [Chemical Formula A] and an organic light-emitting device. In Chemical Formula, A, X, Y, Z, and the substituents R1 to R8, and R11 to R20 are as defined in the specification.
    Type: Application
    Filed: April 5, 2016
    Publication date: March 15, 2018
    Inventors: Taejung YU, Yeong-Tae CHOI, Bong-Hyang LEE, Byung-Sun YANG, Se-Jin LEE
  • Publication number: 20180040834
    Abstract: Disclosed is an organic light emitting compound represented by Formula I: HAr1-(L)n-HAr2??(I) Also disclosed is an organic light emitting diode including the organic light emitting compound. Particularly, the organic light emitting diode employs the organic light emitting compound as a material for electron injection and transport. The organic light emitting diode can be driven at a low voltage and has improved life characteristics compared to conventional organic light emitting diodes. Due to these advantages, the organic light emitting diode is useful in a variety of industrial applications, including displays and lighting systems.
    Type: Application
    Filed: July 26, 2017
    Publication date: February 8, 2018
    Applicant: SFC CO., LTD.
    Inventors: Yeongtae CHOI, Se-jin LEE, Seok-bae PARK, Taejung YU, Byung-sun YANG, Dajung LEE
  • Publication number: 20170352447
    Abstract: Disclosed are an organic heterocyclic compound represented by Chemical Formula A and an organic light-emitting diode comprising the same. wherein substituents R1 to R8, X1 to X4, W1, and Y1 are each as defined in the specification.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 7, 2017
    Inventors: Se-jin Lee, Seok-Bae PARK, Taejung YU, Byung-sun YANG, Yeong-tae CHOI
  • Publication number: 20170222160
    Abstract: Disclosed is an organic light emitting device including a first electrode, a second electrode opposite to the first electrode, and at least one organic layer interposed between the first and second electrodes. The organic layer includes first and second compounds represented by Formulae A and B, respectively: The organic light emitting device exhibits low driving voltage, high efficiency, and long life. Due to these advantages, the organic light emitting device is useful in a variety of industrial applications, including displays and lighting systems.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 3, 2017
    Inventors: Se-jin LEE, Taejung YU, Seok-bae PARK, Byung-sun YANG, Su-Jin LEE, Bong-Hyang LEE, Yeongtae CHOI
  • Publication number: 20170207397
    Abstract: Disclosed is an organic light emitting compound represented by Formula 1: HAr1-(L)n-HAr2?? (1) Also disclosed is an organic light emitting device including the organic light emitting compound of Formula 1. Also disclosed is an organic light emitting device including the organic light emitting compound of Formula 1 as a first compound and a second compound represented by Formula 2: HAr3-(L)n-HAr4?? (2) The organic light emitting devices exhibit low driving voltage, high efficiency, and long life. Due to these advantages, the organic light emitting devices are useful in a variety of industrial applications, including displays and lighting systems.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 20, 2017
    Inventors: Se-jin LEE, Taejung YU, Seok-bae PARK, Byung-sun YANG, Su-Jin LEE, Bong-Hyang LEE, Yeongtae CHOI