Patents by Inventor Jae Il RYU

Jae Il RYU 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).

  • Device and method for inspecting liquid crystal stain of polarizing plate
    Patent number: 12352701
    Abstract: A device for inspecting a liquid crystal stain of a polarization plate, the device comprising a surface light source; a first polarization member; a polarization plate including a liquid crystal film; a second polarization member; and an inspection source, and a method using the device, the device and the method capable of easily inspecting liquid crystal stains generated on a polarization plate with excellent visibility.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: July 8, 2025
    Assignee: Shanjin Optoelectronics (Suzhou) Co., LTD.
    Inventors: Jae Il Ryu, Taek Geun Nam, Je Hyuk Yoo
  • DEVICE AND METHOD FOR INSPECTING LIQUID CRYSTAL STAIN OF POLARIZING PLATE
    Publication number: 20220228994
    Abstract: A device for inspecting a liquid crystal stain of a polarization plate, the device comprising a surface light source; a first polarization member; a polarization plate including a liquid crystal film; a second polarization member; and an inspection source, and a method using the device, the device and the method capable of easily inspecting liquid crystal stains generated on a polarization plate with excellent visibility.
    Type: Application
    Filed: March 9, 2020
    Publication date: July 21, 2022
    Inventors: Jae Il RYU, Taek Geun NAM, Je Hyuk YOO
  • OPTICAL LAMINATE
    Publication number: 20220152980
    Abstract: The present disclosure relates to an optical laminate or a reddening-resistant layer. The present disclosure can provide an optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 19, 2022
    Inventors: Na Young SHIN, Kyun Il RAH, Jae Il RYU, Seung Kyu PARK, Ji Young KIM, You Kyeong KIM
  • Method for manufacturing polarizer, and polarizer and polarizing plate manufactured using same
    Patent number: 10228501
    Abstract: The present invention relates to a method for manufacturing a polarizer, including: a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm; b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye; and c) stretching the dyed polyvinyl alcohol-based film, and a polarizer manufactured using the method.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 12, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jae Il Ryu, Eung Jin Jang, Jin Yong Park, Eungki Lee, Hyung Koo Kang, Taek Geun Nam, Deok Woo Park, Young Gon Kim, Yeon Soo Kim, You Kyeong Kim
  • METHOD FOR MANUFACTURING POLARIZER, AND POLARIZER AND POLARIZING PLATE MANUFACTURED USING SAME
    Publication number: 20170285236
    Abstract: The present invention relates to a method for manufacturing a polarizer, including: a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm; b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye; and c) stretching the dyed polyvinyl alcohol-based film, and a polarizer manufactured using the method.
    Type: Application
    Filed: September 21, 2015
    Publication date: October 5, 2017
    Inventors: Jae Il RYU, Eung Jin JANG, Jin Yong PARK, Eungki LEE, Hyung Koo KANG, Taek Geun NAM, Deok Woo PARK, Young Gon KIM, Yeon Soo KIM, You Kyeong KIM