Patents by Inventor Jong-Nam AHN

Jong-Nam AHN 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: 11970592
    Abstract: The present invention relates to a window cover film and a flexible display panel including the same. More particularly, the present invention relates to a window cover film including a base layer and a hard coating layer, and a flexible display panel including the same. Since the window cover film of the present invention has high surface hardness, flexibility, the excellent bending properties, the window cover film may be restored to the original form without permanent deformation and/or damage of the hard coating layer and the window cover film even though a predetermined deformation is repeated.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: April 30, 2024
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Keon Hyeok Ko, Byoung Sun Ko, Hye Jin Kim, Je Seung Park, Jin Su Park, A Ran Hwang
  • Patent number: 11945925
    Abstract: Provided are a polyimide-based film having excellent visibility, a film for a cover window, and a display device including the same.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: April 2, 2024
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jin Su Park, Keon Hyeok Ko, Byoung Sun Ko, Jong Nam Ahn, Tae Sug Jang
  • Patent number: 11845842
    Abstract: The present invention relates to a new window cover film protecting a flexible display panel. Specifically, provided is a window cover film protecting a surface of a display device, the window cover film including a protective film formed on a base layer or a hard coating layer of a hard coating film having the base layer and the hard coating layer, and having no problem that the window cover film cannot be used as a display window cover film because a part of the protective film is not peeled off due to static electricity generated in the protective film, the base layer, or the hard coating layer when the protective film is peeled off, and the protective film remains on the base layer or a hard coating layer or the hard coating layer is partially or entirely peeled off.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: December 19, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Hye Jin Kim
  • Patent number: 11846755
    Abstract: Provided is a hard coating film. The hard coating film includes a base layer and a hard coating layer disposed on the base layer and having a pencil hardness of 4H or higher. A surface elongation at break of the hard coating film falls within a predetermined range, as measured by a certain method. The hard coating film shows excellent durability under high-temperature/high-humidity conditions, has no microcracks formed after repeated folding, and shows excellent pencil hardness.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: December 19, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Keon Hyeok Ko, Ho Chul Yoon
  • Patent number: 11840631
    Abstract: Provided are a polyimide-based film, a window cover film, and a display device including the same. In detail, provided is a polyimide-based film whose solubility in an ethyl cellosolve solvent satisfies the following Equation 1: ( FW 1 - FW 2 ) FW 1 × 100 ? 50 ? % [ Equation ? ? 1 ] wherein FW1 is a weight of an initial film before being immersed in a solvent, and FW2 is a weight of the film measured after the film is immersed in an ethyl cellosolve solvent, left at 60° C. for 2 hours, and cooled to room temperature, the solvent is removed, and the film is dried at 80° C. for 4 hours.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: December 12, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventor: Jong Nam Ahn
  • Patent number: 11796718
    Abstract: The present invention relates to an optical laminate and a flexible display panel including the same, and more particularly, to an optical laminate including a self-restoration barrier adhesive layer and a flexible display panel including the same.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: October 24, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventor: Jong Nam Ahn
  • Patent number: 11692108
    Abstract: Provided is a composition for forming a hard coating layer, which includes an epoxy siloxane resin, a crosslinking agent including a compound having an alicyclic epoxy group, a thermal initiator including a compound represented by a specific chemical formula, a photoinitiator, a fluorine-substituted (meth)acrylate compound, and silica nanoparticles surface-modified with a fluorine compound, and forms a hard coating layer having excellent hardness and antifouling property and suppressing curling.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: July 4, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Ho Chul Yoon
  • Patent number: 11693155
    Abstract: Provided is a hard coating film in which a hard coating layer having a water contact angle of 90° or less, a conductive layer, and a low refractive index layer are laminated on a substrate, the film having excellent hardness, anti-curling property, antireflection performance, antifouling performance, and antistatic performance.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: July 4, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Tae Sug Jang, Byoung Sun Ko, Jin Su Park, Ho Chul Yoon
  • Patent number: 11693154
    Abstract: Provided is a hard coating film in which a hard coating layer having a water contact angle of 90° or less, a high refractive index layer, and a low refractive index layer are laminated on a substrate, the film having suppressed curling, and excellent hardness and antireflection performance.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: July 4, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Tae Sug Jang, Byoung Sun Ko, Jin Su Park, Ho Chul Yoon
  • Patent number: 11654665
    Abstract: The present invention relates to a window cover film and a flexible display panel including the same. More particularly, the present invention relates to a window cover film including a base layer, a hard coating layer, and an anti-fingerprint layer, and a flexible display panel including the same.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: May 23, 2023
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Keon Hyeok Ko
  • Patent number: 11518921
    Abstract: Provided is an antistatic polyimide-based film. More particularly, as an antistatic polyimide-based film for a window cover for protecting a surface of a display device, a window cover film having a protective film formed on the polyimide-based film provides an improvement to a problem of not being used as a film for a display window cover because a portion of the protective film remains on a base layer or a hard coating layer without being peeled off due to static electricity in the protective film or the base layer, or a hard coating layer, or the hard coating layer is peeled off with some or all of the protective film when the protective film is peeled off.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: December 6, 2022
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Hye Jin Kim
  • Publication number: 20220064059
    Abstract: Provided are a glass multilayer structure, a method of producing the same, and a flexible display panel including the same. Specifically, a glass substrate multilayer structure including: a flexible glass substrate, a first polyimide-based shatterproof layer formed on a front surface of the flexible glass substrate, an epoxy-based hard coating layer formed on the first polyimide-based shatterproof layer, and a second polyimide-based shatterproof layer formed on a rear surface of the glass substrate, and a flexible display panel including the same are provided.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 3, 2022
    Inventors: Cheol Min Yun, Jong Nam Ahn
  • Publication number: 20220043185
    Abstract: The present invention relates to a window cover film and a flexible display panel including the same. More particularly, the present invention relates to a window cover film including a base layer and a hard coating layer, and a flexible display panel including the same.
    Type: Application
    Filed: July 29, 2021
    Publication date: February 10, 2022
    Inventor: Jong Nam Ahn
  • Patent number: 11168212
    Abstract: Provided is a composition for forming a hard coating layer, which includes an epoxy siloxane resin, a crosslinking agent including a compound having an alicyclic epoxy group, a thermal initiator including a compound represented by Chemical Formula 2, and a photoinitiator to decrease curls and increase hardness of the hard coating film.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: November 9, 2021
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Tae Sug Jang, Jin Su Park, Ho Chul Yoon
  • Publication number: 20210325572
    Abstract: The present invention relates to an optical laminate and a flexible display panel including the same, and more particularly, to an optical laminate including a self-restoration barrier adhesive layer and a flexible display panel including the same.
    Type: Application
    Filed: April 19, 2021
    Publication date: October 21, 2021
    Inventor: Jong Nam Ahn
  • Publication number: 20210324145
    Abstract: Provided are a polyimide-based film, a window cover film, and a display panel including the same. More specifically, provided are a polyimide-based film having high tear strength and excellent optical properties, a window cover film, and a display panel including the same.
    Type: Application
    Filed: April 19, 2021
    Publication date: October 21, 2021
    Inventors: Jong Nam Ahn, Hye Jin Kim
  • Publication number: 20210317331
    Abstract: Provided is a window cover film and a flexible display panel including the same. More particularly, a window cover film including a substrate layer and a hard coating layer and a flexible display panel including the same are provided.
    Type: Application
    Filed: April 13, 2021
    Publication date: October 14, 2021
    Inventor: Jong Nam Ahn
  • Patent number: 11137524
    Abstract: Provided is a hard coating film including a polyamideimide substrate layer and a hard coating layer, each of which has a predetermined refractive index, with a difference in the refractive index between those layers being 0.05. The substrate layer has a tensile modulus of 3 to 7 GPa, at a thickness of 80 ?m, as measured according to ASTM D111. The present invention relates to a hard coating film having improved mechanical and optical properties.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: October 5, 2021
    Assignees: SK Innovation Co., Ltd., SK ie technology Co., Ltd.
    Inventors: Jong Nam Ahn, Keon Hyeok Ko, Byoung Sun Ko, Sang Yoon Park, Jin Su Park, Ho Chul Yoon, Tae Sug Jang
  • Publication number: 20210095121
    Abstract: Provided are a polyimide-based film, a window cover film, and a display device including the same. In detail, provided is a polyimide-based film whose solubility in an ethyl cellosolve solvent satisfies the following Equation 1: ( FW 1 - FW 2 ) FW 1 × 100 ? 50 ? % [ Equation ? ? 1 ] wherein FW1 is a weight of an initial film before being immersed in a solvent, and FW2 is a weight of the film measured after the film is immersed in an ethyl cellosolve solvent, left at 60° C. for 2 hours, and cooled to room temperature, the solvent is removed, and the film is dried at 80° C. for 4 hours.
    Type: Application
    Filed: September 29, 2020
    Publication date: April 1, 2021
    Inventor: Jong Nam Ahn
  • Publication number: 20210094265
    Abstract: The present invention relates to a window cover film and a flexible display panel including the same. More particularly, the present invention relates to a window cover film including a base layer, a hard coating layer, and an anti-fingerprint layer, and a flexible display panel including the same.
    Type: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Inventors: Jong Nam Ahn, Keon Hyeok Address Ko