Patents by Inventor Yeonhui Yi

Yeonhui Yi 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).

  • HOLOGRAPHIC RECORDING MEDIUM, COMPOSITION FOR FORMING PHOTOPOLYMER LAYER AND OPTICAL ELEMENT
    Publication number: 20250013197
    Abstract: The present invention relates to a holographic recording media wherein an adhesive force between the photopolymer layer and the adhesive protective layer before light irradiation is 500 to 5,000 gf/20 nm, and a haze value of the photopolymer layer is 3% or less, and an optical element including the holographic recording medium.
    Type: Application
    Filed: October 17, 2023
    Publication date: January 9, 2025
    Applicant: LG CHEM, LTD.
    Inventors: Yeonhui YI, Hanna LEE, Min Soo KIM, Inkyu LEE, Chulsuk HONG, Soonhwa JUNG
  • PHOTOPOLYMER COMPOSITION FOR HOLOGRAM FORMATION, HOLOGRAM RECORDING MEDIUM AND OPTICAL ELEMENTS
    Publication number: 20230142827
    Abstract: The present invention relates to a photopolymer composition for hologram formation, comprising: a polymer matrix comprising a siloxane-based polymer and a (meth)acrylate polymer containing one or more reactive functional groups in the side chains, a holographic recording method, and an optical element.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 11, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Inkyu LEE, Soonhwa JUNG, Chulsuk HONG, Yeongrae CHANG, Yeonhui YI
  • Organic Light Emitting Device
    Publication number: 20230043088
    Abstract: The present disclosure provides an organic light emitting device comprising a hole injection layer including a cured product of a compound represented by the following Chemical Formula 1, and a hole transport layer including a polymer containing a repeating unit represented by the following Chemical Formula 2: wherein all the variables a10-re described herein.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 9, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Esder Kang, Yeonhui Yi, Sejin Jung, Beomgoo Kang, Min Suk Jung, Jaesoon Bae, Jaechol Lee, Yebyeol Kim, Hyunju Choi
  • Copolymer and organic light emitting device comprising same
    Patent number: 11309494
    Abstract: The present specification provides a copolymer including a unit of Chemical Formula 1 and a unit of Chemical Formula 2; and an organic light emitting device including the same.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: April 19, 2022
    Inventors: Yeonhui Yi, Jinseck Kim, Jaesoon Bae, Jaechol Lee, Soyoung Yu, Jae Hak Jeong
  • Novel Compound and Organic Light Emitting Device Comprising the Same
    Publication number: 20220064101
    Abstract: The present disclosure provides a novel heterocyclic compound represented by the following Chemical Formula 1, and an organic light emitting device comprising the same, in Chemical Formula 1, L, L1, L2, X1, X2, R?1 to R?3, R?1 to R?3, n1 to n3, m1 to m3, Ar1 and Ar2 are described herein.
    Type: Application
    Filed: July 20, 2020
    Publication date: March 3, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jiyoung Lee, Jaesoon Bae, Jaechol Lee, Doowhan Choi, Sungkyoung Kang, Hyeonah Shin, Yeonhui Yi, Min Suk Jung
  • Copolymer And Organic Light Emitting Device Comprising Same
    Publication number: 20200185611
    Abstract: The present specification provides a copolymer including a unit of Chemical Formula 1 and a unit of Chemical Formula 2; and an organic light emitting device including the same.
    Type: Application
    Filed: October 17, 2018
    Publication date: June 11, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Yeonhui Yi, Jinseck Kim, Jaesoon Bae, Jaechol Lee, Soyoung Yu, Jae Hak Jeong