Patents by Inventor Hong Jun Ahn

Hong Jun 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: 20250138360
    Abstract: The present disclosure relates to a transmittance-variable optical laminate including a first polarizing plate, a first transparent conductive layer formed on a first surface of the first polarizing plate, a second polarizing plate arranged to be opposite the first polarizing plate, a second transparent conductive layer formed on a first surface of the second polarizing plate and arranged to be opposite the first transparent conductive layer, and a liquid crystal layer provided between the first transparent conductive layer and the second transparent conductive layer, in which at least one of the first and second transparent conductive layers is in direct contact with either the first polarizing plate or the second polarizing plate, and at least one of the first and second polarizing plates has a single transmittance color b* value of ?6.0 to ?3.0.
    Type: Application
    Filed: November 1, 2022
    Publication date: May 1, 2025
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Hong-Jun AHN, Dong-Hwi KIM, Pyoung-Yun OH, Sung-Hoon JUNG
  • Patent number: 12282221
    Abstract: The present invention relates to a transmittance-variable optical laminate, a method for manufacturing same, a smart window comprising same, and a vehicle and building window or door employing same, the optical laminate comprising: a first polarizing plate including a first polarizer and a polarization rotation layer; a first transparent conductive layer formed on one surface of the first polarizing plate; a second polarizing plate including a second polarizer and a retardation layer, and facing the first polarizing plate; a second transparent conductive layer formed on one surface of the second polarizing plate, and facing the first transparent conductive layer; and a liquid crystal layer provided between the first transparent conductive layer and the second transparent conductive layer.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: April 22, 2025
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Sung-Su Kim, Sung-Ho Baek, Hong-Jun Ahn, Pyoung-Yun Oh
  • Publication number: 20250102855
    Abstract: The present invention relates to a variable transmittance optical laminate and a manufacturing method therefor, a smart window comprising same, and automobile and building window systems using same, the variable transmittance optical laminate includes: a first laminate in which a first polarizing plate, a first transparent conductive layer, and a first alignment layer are sequentially laminated; a second laminate which faces the first laminate and in which a second polarizing plate, a second transparent conductive layer, and a second alignment layer are sequentially laminated; a liquid crystal layer disposed between the first laminate and the second laminate; and a sealant formed along the outer circumferential surface of the liquid crystal layer and sealing the liquid crystal layer.
    Type: Application
    Filed: December 16, 2022
    Publication date: March 27, 2025
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Dong-Hwi KIM, Hong-Jun AHN, Pyoung-Yun OH
  • Publication number: 20240369873
    Abstract: The present invention relates to a transmittance-variable optical laminate, a method for manufacturing same, a smart window comprising same, and a vehicle and building window or door employing same, the optical laminate comprising: a first polarizing plate including a first polarizer and a polarization rotation layer; a first transparent conductive layer formed on one surface of the first polarizing plate; a second polarizing plate including a second polarizer and a retardation layer, and facing the first polarizing plate; a second transparent conductive layer formed on one surface of the second polarizing plate, and facing the first transparent conductive layer; and a liquid crystal layer provided between the first transparent conductive layer and the second transparent conductive layer, wherein at least one of the first transparent conductive layer and the second transparent conductive layer is formed to come into direct contact with any one of the first polarizing plate and the second polarizing plate, the
    Type: Application
    Filed: September 20, 2022
    Publication date: November 7, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Sung-Su KIM, Sung-Ho BAEK, Hong-Jun AHN, Pyoung-Yun OH
  • Publication number: 20240329288
    Abstract: The present invention relates to a variable transmittance optical laminate, a method for manufacturing same, a smart window comprising same, and vehicle and building windows and doors using same, the variable transmittance optical laminate comprising: a first polarizing plate including a first polarizer; a first transparent conductive layer formed on one surface of the first polarizing plate; a second polarizing plate which faces the first polarizing plate and includes a second polarizer; a second transparent conductive layer which is formed on one surface of the second polarizing plate and faces the first transparent conductive layer; and a liquid crystal layer provided between the first transparent conductive layer and the second transparent conductive layer, wherein at least one of the first polarizing plate or the second polarizing plate includes a retardation layer, the in-plane retardation value of the retardation layer is 230 nm to 280 nm, and the contained angle between the optical axis of the retarda
    Type: Application
    Filed: September 20, 2022
    Publication date: October 3, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Sung-Su KIM, Hong-Jun AHN, Pyoung-Yun OH, Sung-Ho BAEK
  • Publication number: 20240280854
    Abstract: The present invention relates to a transmittance variable optical stack and a manufacturing method therefor, and a smart window comprising same and a vehicle to which the same is applied, the optical stack comprising polarizing plates stacked on both surfaces thereof with a liquid crystal layer, driven according to an electric field, interposed therebetween, wherein the polarizing plates comprise a polarizer and a protective layer formed on at least one surface of the polarizer, a transparent conductive layer is formed in direct contact with the polarizing plate, and the optical stack has a total light transmittance that changes according to the application of voltage.
    Type: Application
    Filed: May 27, 2022
    Publication date: August 22, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Dong-Hwi KIM, Seung-Won SONG, Hong-Jun AHN, Pyoung-Yun OH, Yu-Jin LEE
  • Publication number: 20160291224
    Abstract: A composite polarizing plate includes a polarizing plate having a polarization coating layer formed on one surface thereof, a retardation coating layer, and a photo-curable adhesive layer installed between the polarizing plate and the retardation coating layer, such that a display device having a thinner thickness and lighter weight may be implemented, and cracks may be reduced due to excellent flexibility, thereby the composite polarizing plate may be applied to a flexible display device.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 6, 2016
    Inventors: Hong Jun AHN, Yong Won SEO
  • Publication number: 20160216424
    Abstract: A polarizing plate includes an adhesive layer, a protective layer made of an aqueous composition containing polyvinylalcohol, and a polarizer which are laminated in this order, and the polarizer includes a liquid crystal coating layer which is formed on one surface of a base film thereof. The polarizing plate having the above configuration may exhibit increased durability and maintain optical characteristics, and thereby implementing high image quality in the display device with increased durability.
    Type: Application
    Filed: January 26, 2016
    Publication date: July 28, 2016
    Inventors: Yong Won SEO, Hong Jun AHN, Ji Hye HEO
  • Patent number: 9158134
    Abstract: The present invention relates to a light-sensitive compound, a polymer formed by using the compound, and a production method of the compound and polymer. More particularly, the present invention relates to a unit compound that exhibits light-sensitivity with respect to three different wavelengths, a polymer having light-sensitive, which is polymerized by using the unit compound as a monomer, and a production method of the compound and polymer. The light-sensitive compound and the polymer according to the present invention may be usefully applied to an optical film.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: October 13, 2015
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Dong Hack Suh, Won Jung Kim, Yun Cheol Yang, Dong Wan Han, Hong Jun Ahn, Jun Yong Hwang, Kyung Mi Lee, Hyun Jin Lee, Seong Heun Cho, Ga Young Han
  • Publication number: 20130188120
    Abstract: The present invention relates to a light-sensitive compound, a polymer formed by using the compound, and a production method of the compound and polymer. More particularly, the present invention relates to a unit compound that exhibits light-sensitivity with respect to three different wavelengths, a polymer having light-sensitive, which is polymerized by using the unit compound as a monomer, and a production method of the compound and polymer. The light-sensitive compound and the polymer according to the present invention may be usefully applied to an optical film.
    Type: Application
    Filed: June 30, 2010
    Publication date: July 25, 2013
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Dong Hack Suh, Won Jung Kim, Yun Cheol Yang, Dong Wan Han, Hong Jun Ahn, Jun Yong Hwang, Kyung Mi Lee, Hyun Jin Lee, Seong Heun Cho, Ga Young Han