Patents by Inventor Je-Hyuk Yoo

Je-Hyuk Yoo 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: 20230287225
    Abstract: A printed board, a screen-printing ink, and a screen-printing method are provided. The printed board comprises a printed pattern and/or printed line which comprises a polymer binder and a fluorine-based surfactant, has excellent thickness uniformity and straightness, has no edge top defect, and is not damaged even when formed on a repeatedly folded substrate.
    Type: Application
    Filed: August 12, 2021
    Publication date: September 14, 2023
    Inventors: Yeon Seon AHN, Sung Jin SHIN, Je Hyuk YOO, Tae Yong KIM
  • Publication number: 20220291436
    Abstract: The present application can provide a thin polarizing plate having excellent antireflection performance in all directions including the side as well as the front, and having excellent folding durability and durability against short wavelengths. In addition, the present application can provide an organic light-emitting display device to which the polarizing plate is applied and a display device comprising the same.
    Type: Application
    Filed: September 21, 2020
    Publication date: September 15, 2022
    Inventors: Eun Je Kim, Je Hyuk Yoo, Woo Yong Cho, Yun Ki Park, Byeong Won Lee
  • 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
  • Patent number: 10324243
    Abstract: There are provided a high brightness polarizing plate and a liquid crystal display device including the high brightness polarizing plate as a lower polarizing plate. The high brightness polarizing plate includes: a polarizer; and a protective film disposed on a side of the polarizer, wherein the protective film faces a backlight unit, and a primer layer including a low-refractive polymer resin and fine hollow particles is formed on a side of the protective film opposite to a side thereof facing the polarizer.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: June 18, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Kyung-Ki Hong, Jae-Ho Jung, Jun-Wuk Park, Byung-Min Lee, Jae-Hoon Shim, Je-Hyuk Yoo
  • Publication number: 20160266293
    Abstract: There are provided a high brightness polarizing plate and a liquid crystal display device including the high brightness polarizing plate as a lower polarizing plate. The high brightness polarizing plate includes: a polarizer; and a protective film disposed on a side of the polarizer, wherein the protective film faces a backlight unit, and a primer layer including a low-refractive polymer resin and fine hollow particles is formed on a side of the protective film opposite to a side thereof facing the polarizer.
    Type: Application
    Filed: July 24, 2014
    Publication date: September 15, 2016
    Inventors: Kyung-Ki Hong, Jae-Ho Jung, Jun-Wuk Park, Byung-Ming Lee, Jae-Hoon Shim, Je-Hyuk Yoo
  • Patent number: 8570469
    Abstract: Disclosed herein is a method for manufacturing a very thin achromatic quarter wave film laminate for transflective LCD including steps of (1) preparing a polymeric substrate oriented in a specific direction; (2) coating a liquid crystal solution on the polymeric substrate; (3) subjecting the coating to drying and UV curing to form a lower liquid crystal layer; (4) coating a solution for an orientation film on the lower liquid crystal layer; (5) drying the coating to form an orientation film; (6) imparting orientation to the orientation film via polarization UV radiation or rubbing; (7) coating a liquid crystal solution on the orientation film; and (8) subjecting the coating to drying and UV curing to form a upper liquid crystal layer. The very thin achromatic quarter wave film laminate for transflective LCD manufactured by this method has a considerably reduced thickness, as compared to conventional quarter wave films in which anisotropic polymeric films are laminated.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: October 29, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Hyuk Yoon, Je-Hyuk Yoo, Moon-Soo Park
  • Patent number: 7956966
    Abstract: Disclosed herein is an very thin achromatic quarter wave film laminate for transflective LCD included in an LCD polarizer. More specifically, the very thin achromatic quarter wave film laminate for transflective LCD has a considerably reduced thickness, as compared to conventional quarter wave films in which anisotropic polymeric films are laminated.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: June 7, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Hyuk Yoon, Je-Hyuk Yoo, Moon-Soo Park
  • Publication number: 20110129598
    Abstract: Disclosed herein is an very thin achromatic quarter wave film laminate for transflective LCD included in an LCD polarizer. More specifically, the very thin achromatic quarter wave film laminate for transflective LCD has a considerably reduced thickness, as compared to conventional quarter wave films in which anisotropic polymeric films are laminated.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 2, 2011
    Inventors: Hyuk YOON, Je-Hyuk Yoo, Moon-Soo Park
  • Publication number: 20110051050
    Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.
    Type: Application
    Filed: January 19, 2009
    Publication date: March 3, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park, Je-Hyuk Yoo, Sung-Ho Chun, Heon Kim, Dai-Seung Choi, Dong-Woo Yoo
  • Publication number: 20100053520
    Abstract: Disclosed herein is an very thin achromatic quarter wave film laminate for transflective LCD included in an LCD polarizer. More specifically, the very thin achromatic quarter wave film laminate for transflective LCD has a considerably reduced thickness, as compared to conventional quarter wave films in which anisotropic polymeric films are laminated.
    Type: Application
    Filed: February 26, 2007
    Publication date: March 4, 2010
    Applicants: LG CHEM LTD.
    Inventors: Hyuk Yoon, Je-Hyuk Yoo, Moon-Soo Park
  • Patent number: 7663718
    Abstract: Disclosed herein is an very thin achromatic quarter wave film laminate for transflective LCD included in an LCD polarizer. More specifically, the very thin achromatic quarter wave film laminate for transflective LCD has a considerably reduced thickness, as compared to conventional quarter wave films in which anisotropic polymeric films are laminated.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: February 16, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Hyuk Yoon, Je-Hyuk Yoo, Moon-Soo Park
  • Publication number: 20090103030
    Abstract: Disclosed herein is an very thin achromatic quarter wave film laminate for transflective LCD included in an LCD polarizer. More specifically, the very thin achromatic quarter wave film laminate for transflective LCD has a considerably reduced thickness, as compared to conventional quarter wave films in which anisotropic polymeric films are laminated.
    Type: Application
    Filed: February 26, 2007
    Publication date: April 23, 2009
    Applicant: LG CHEM, LTD.
    Inventors: Hyuk Yoon, Je-Hyuk Yoo, Moon-Soo Park