Patents by Inventor Hyon Gyu PARK

Hyon Gyu PARK 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: 11851589
    Abstract: The present application provides an adhesive composition for a foldable display including a thermocurable resin; an ionic salt; and a crosslinking agent, wherein the adhesive composition for a foldable display has storage modulus of 104 Pa to 106 Pa at ?30° C. and 60° C. after curing, an adhesive film using the same, and a foldable display including the same.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: December 26, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Hee Song, Hyon Gyu Park, Byungsu Park, Hyun Cheol Kim, Hui Je Lee
  • Patent number: 11796719
    Abstract: Provided are a protective film for a foldable display and a foldable display device comprising the same.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: October 24, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Han Sol Yoo, Hyun Cheol Kim, Hyon Gyu Park, Hee Song
  • Patent number: 11708512
    Abstract: The present application provides an adhesive composition for a foldable display including a thermocurable resin; and a crosslinking agent, wherein the thermocurable resin includes a unit derived from a compound including at least one N or O; and at least one unshared electron pair in the molecule, and the thermocurable resin has a glass transition temperature of ?70° C. or lower, an adhesive film using the same, and a foldable display including the same.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: July 25, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Hee Song, Hyon Gyu Park, Hyun Cheol Kim
  • Patent number: 11649384
    Abstract: The present invention relates to a method of deriving significant factors of rheological properties, which influence folding stability for developing an adhesive with excellent folding stability, and predicting folding stability through the same. It is possible to select an adhesive with excellent folding stability by measuring initial stress and a strain recovery rate as the significant factors, and measuring predicted folding stability (predicted number of times of folding) therefrom.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: May 16, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Hyunsup Lee, Hyon Gyu Park, Yoonkyung Kwon, Myunghan Lee, Hee Song
  • Patent number: 11594156
    Abstract: Provided are a foldable back plate, a method of manufacturing the same and a foldable display device comprising the same.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: February 28, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Hee Song, Hyon Gyu Park, Hyun Cheol Kim
  • Publication number: 20230050611
    Abstract: The present application provides a pressure-sensitive adhesive layer comprising at least first and second regions having different physical properties, wherein the difference in physical properties, such as an elastic modulus or creep strain rate is maintained relatively large for each region, and the difference in physical properties, such as a peel force or recovery rate is maintained relatively small for each region.
    Type: Application
    Filed: December 10, 2020
    Publication date: February 16, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Byung Su PARK, Hyun Cheol KIM, Hyon Gyu PARK
  • Publication number: 20230032561
    Abstract: The present application provides a pressure-sensitive adhesive layer comprising at least first and second regions having different physical properties, wherein the difference in physical properties, such as an elastic modulus or creep strain rate is maintained relatively large for each region, and the difference in physical properties, such as a peel force or recovery rate is maintained relatively small for each region.
    Type: Application
    Filed: December 10, 2020
    Publication date: February 2, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Byung Su PARK, Hyun Cheol KIM, Hyon Gyu PARK
  • Publication number: 20230026853
    Abstract: The present application may provide a flexible device comprising a pressure-sensitive adhesive layer comprising at least first and second regions having different physical properties, wherein the difference in physical properties, such as an elastic modulus or creep strain rate, which are advantageous as the difference in physical properties between the regions increases, is maintained relatively large for each region, and the difference in physical properties, such as a peel force or recovery rate, which are advantageous as the difference in physical properties between the regions decreases, is maintained relatively small for each region.
    Type: Application
    Filed: December 10, 2020
    Publication date: January 26, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Byung Su PARK, Hyun Cheol KIM, Hyon Gyu PARK
  • Patent number: 11492517
    Abstract: Provided are a foldable back plate film and a method of manufacturing the same.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: November 8, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Hee Song, Hyon Gyu Park, Hyun Cheol Kim
  • Publication number: 20220332989
    Abstract: The present invention relates to a multi-region foldable adhesive film and a fabrication method therefor, and particularly, to a multi-region foldable adhesive film having improved folding characteristics by making an adhesive layer included in the foldable adhesive film have different physical properties, and a fabrication method therefor.
    Type: Application
    Filed: October 12, 2020
    Publication date: October 20, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Byung Su PARK, Hyun Cheol KIM, Hyon Gyu PARK
  • Publication number: 20220332988
    Abstract: The present invention relates to a foldable adhesive film and a fabrication method therefor, and particularly, to a foldable adhesive film having improved folding performance by minimizing the deformation thereof at high temperature, maintaining the creep strain and recovery thereof at constant levels in a temperature range from low temperature to high temperature, minimizing the force that is applied for deformation of the adhesive film in a low-temperature region, improving the recovery thereof in a low-temperature region, and maintaining the recovery thereof at constant levels in a temperature range from a low-temperature region to a high-temperature region, and a fabrication method therefor.
    Type: Application
    Filed: December 3, 2020
    Publication date: October 20, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Hyon Gyu PARK, Hyun Cheol KIM, Hee SONG, Seung Yeon RYU
  • Publication number: 20220228042
    Abstract: The present invention relates to an adhesive composition including an acrylic polymer having a glass transition temperature of ?40° C. or less and a citric acid ester-based compound whose ends are substituted with hydrogen or an alkyl group, an adhesive film, and a foldable display device.
    Type: Application
    Filed: September 28, 2020
    Publication date: July 21, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Hee SONG, Hyon Gyu PARK, Hyun Cheol KIM, Seung Yeon RYU
  • Publication number: 20220145143
    Abstract: The present application relates to an adhesive film comprising a first polymer comprising a first (meth)acrylate resin and at least one type of a monomer of the following Chemical Formula 1, a method for manufacturing the same, and a foldable display device comprising the same:
    Type: Application
    Filed: August 5, 2020
    Publication date: May 12, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Hee SONG, Hyun Cheol KIM, Hyon Gyu PARK
  • Publication number: 20220112413
    Abstract: The present application relates to an adhesive film a first polymer comprising a first (meth)acrylate resin and at least one type or more types of a monomer of the following Chemical Formula 1; and a second polymer comprising a second (meth)acrylate resin, a method for manufacturing the same, and a foldable display device comprising the same:
    Type: Application
    Filed: August 5, 2020
    Publication date: April 14, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Hee SONG, Hyun Cheol KIM, Hyon Gyu PARK
  • Publication number: 20220081594
    Abstract: The present application relates to an adhesive film comprising a first (meth)acrylate resin and at least one type of a monomer of the following Chemical Formula 1, a method for manufacturing the same, and a foldable display device comprising the same:
    Type: Application
    Filed: August 5, 2020
    Publication date: March 17, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Hee SONG, Hyun Cheol KIM, Hyon Gyu PARK
  • Publication number: 20210349242
    Abstract: Provided are a protective film for a foldable display and a foldable display device comprising the same.
    Type: Application
    Filed: October 8, 2019
    Publication date: November 11, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Han Sol YOO, Hyun Cheol KIM, Hyon Gyu PARK, Hee SONG
  • Publication number: 20210340414
    Abstract: Provided are an adhesive composition, an adhesive layer comprising the same and a foldable display comprising the same.
    Type: Application
    Filed: December 24, 2019
    Publication date: November 4, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee SONG, Hyon Gyu PARK, Hyun Cheol KIM
  • Publication number: 20210147717
    Abstract: Provided are a foldable back plate film and a method of manufacturing the same.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 20, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee SONG, Hyon Gyu PARK, Hyun Cheol KIM
  • Patent number: 10947420
    Abstract: The present application relates to a pressure-sensitive adhesive composition for a foldable display and a use thereof. The pressure-sensitive adhesive composition of the present application has excellent bending reliability while having appropriate adhesive force and cohesive force, thereby being useful for forming a pressure-sensitive adhesive layer for a foldable display.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: March 16, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hyon Gyu Park, Dong Kyu Roh, Yoon Kyung Kwon
  • Publication number: 20210065591
    Abstract: Provided are a foldable back plate, a method of manufacturing the same and a foldable display device comprising the same.
    Type: Application
    Filed: November 12, 2020
    Publication date: March 4, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee SONG, Hyon Gyu PARK, Hyun Cheol KIM