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).

  • Publication number: 20210095085
    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: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Inventors: Jong Nam Ahn, Keon Hyeok Ko, Byoung Sun Ko, Hye Jin Kim, Je Seung Park, Jin Su Park, A Ran Hwang
  • Publication number: 20210100120
    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: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Inventors: Jong Nam Ahn, Hye Jin Kim
  • 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: 20210095174
    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: Application
    Filed: September 28, 2020
    Publication date: April 1, 2021
    Inventors: Jong Nam Ahn, Hye Jin Kim
  • 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
  • Publication number: 20210002440
    Abstract: Provided are a polyimide-based film having excellent visibility, a film for a cover window, and a display device including the same.
    Type: Application
    Filed: July 2, 2020
    Publication date: January 7, 2021
    Inventors: Jin Su Park, Keon Hyeok Ko, Byoung Sun Ko, Jong Nam Ahn, Tae Sug Jang
  • Publication number: 20200257023
    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: Application
    Filed: February 10, 2020
    Publication date: August 13, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Keon Hyeok Ko, Ho Chul Yoon
  • Publication number: 20200174161
    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: Application
    Filed: December 2, 2019
    Publication date: June 4, 2020
    Inventors: Jong Nam Ahn, Keon Hyeok Ko, Byoung Sun Ko, Sang Yoon Park, Jin Su Park, Ho Chul Yoon, Tae Sug Jang
  • Publication number: 20200064518
    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: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Jong Nam Ahn, Tae Sug Jang, Byoung Sun Ko, Jin Su Park, Ho Chul Yoon
  • Publication number: 20200064519
    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: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Jong Nam Ahn, Tae Sug Jang, Byoung Sun Ko, Jin Su Park, Ho Chul Yoon
  • Publication number: 20200062991
    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: Application
    Filed: August 12, 2019
    Publication date: February 27, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Ho Chul Yoon
  • Publication number: 20200056056
    Abstract: Provided is an antifouling hard coating film including a cured layer of a composition for forming a hard coating layer including an epoxy siloxane resin, disposed on a substrate, and an antifouling layer including a fluorine-substituted silsesquioxane resin, disposed on the cured layer, the antifouling hard coating film having excellent interlayer bonding force, hardness, and antifouling property, and suppressed curling.
    Type: Application
    Filed: August 13, 2019
    Publication date: February 20, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Ho Chul Yoon
  • Publication number: 20200048462
    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: Application
    Filed: August 5, 2019
    Publication date: February 13, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Tae Sug Jang, Jin Su Park, Ho Chul Yoon
  • Patent number: 9676960
    Abstract: The present invention relates to a composition for forming a hard coating layer, which may form a hard coating layer having significantly improved hardness as well as excellent flexibility such that curling is minimized.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: June 13, 2017
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Won-Yeob Kim, Chul-Soon Moon, Hye-Jin Kim, Ho-Chul Yoon, Jae-Eun Lee, Jong-Nam Ahn, Youngjune Park
  • Publication number: 20160046830
    Abstract: The present invention relates to a composition for forming a hard coating layer, which may form a hard coating layer having significantly improved hardness as well as excellent flexibility such that curling is minimized.
    Type: Application
    Filed: August 12, 2015
    Publication date: February 18, 2016
    Inventors: Won-Yeob KIM, Chul-Soon MOON, Hye-Jin KIM, Ho-Chul YOON, Jae-Eun LEE, Jong-Nam AHN, Young-June PARK