Patents by Inventor Hyeong Seuk YUN

Hyeong Seuk YUN 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: 11630350
    Abstract: The present invention relates to a liquid crystal alignment composition for the preparation of a liquid crystal alignment film having enhanced alignment property and stability and exhibiting a high voltage holding ratio, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: April 18, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jung Ho Jo, Hee Han, Hang Ah Park, Soon Ho Kwon, Jun Young Yoon, Hyeong Seuk Yun
  • Patent number: 11499100
    Abstract: A liquid crystal aligning agent composition for preparing a liquid crystal alignment film having enhanced stability and exhibiting excellent electrical characteristics, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the liquid crystal alignment film.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: November 15, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Hang Ah Park, Jun Young Yoon, Hyeong Seuk Yun, Jung Ho Jo
  • Patent number: 11441075
    Abstract: A liquid crystal alignment agent composition for producing a liquid crystal alignment film having enhanced alignment property and stability and a high voltage holding ratio, a method of producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same, are provided.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: September 13, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Seongku Kim, Sung Joon Min, Hoonseo Park, Hyeong Seuk Yun, Sang Mi Lee, Jung Ho Jo
  • Patent number: 11370971
    Abstract: A liquid crystal alignment film comprising a polymer, having an excellent alignment property, stability, and high film strength, and thus exhibiting excellent durability and a high residual image characteristic, and a liquid crystal display device using the liquid crystal alignment film.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: June 28, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Hyeong Seuk Yun, Sung Joon Min, Jun Young Yoon, Jung Ho Jo
  • Patent number: 11359144
    Abstract: A liquid crystal aligning agent composition for forming a liquid crystal alignment film having improved electrical characteristics and high reliability while exhibiting excellent alignment properties and durability, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the liquid crystal alignment film.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: June 14, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Hang Ah Park, Jung Ho Jo, Jun Young Yoon, Hyeong Seuk Yun
  • Patent number: 11347110
    Abstract: Provided are a composition for a liquid crystal alignment agent, a manufacturing method of a liquid crystal alignment film, a liquid crystal alignment film using the same, and a liquid crystal display device including the liquid crystal alignment film. More specifically, there are provided the manufacturing method of a liquid crystal alignment film capable of providing the liquid crystal alignment film in which light irradiation energy is able to be reduced, and alignment characteristic and stability are excellent and the voltage holding ratio and electrical characteristics are also excellent through a simple process including applying and drying the composition for a liquid crystal alignment agent on the substrate, directly performing light irradiation to conduct alignment treatment while a high-temperature heat treatment process is omitted, followed by curing by heat treatment, the liquid crystal alignment film, and the liquid crystal display device including the same.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: May 31, 2022
    Assignee: LG CHEM, LTD
    Inventors: Jung Ho Jo, Hee Han, Hang Ah Park, Soon Ho Kwon, Jun Young Yoon, Hyeong Seuk Yun
  • Patent number: 11345856
    Abstract: The present invention provides a liquid crystal aligning agent composition that has excellent storage stability, can secure a high imidization rate, and can produce a liquid crystal alignment film having improved film strength together with liquid crystal alignment properties, a method for producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: May 31, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Sang Mi Lee, Jung Ho Jo, Hang Ah Park, Hyeong Seuk Yun, Jun Young Yoon
  • Patent number: 11286348
    Abstract: The present invention relates to a polymer having excellent liquid crystal alignment and electrical properties and thus is suitable for use as a liquid crystal alignment agent, a liquid crystal alignment agent containing the same, a liquid crystal aligning film formed from the liquid crystal alignment agent, and a liquid crystal display device containing the liquid crystal aligning film.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: March 29, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Kichul Koo, Jung Ho Jo, Sung Joon Min, Sang Mi Lee, Jun Young Yoon, Hyeong Seuk Yun, Yoon Bin Lim
  • Patent number: 11287700
    Abstract: The present invention relates to a polymer having excellent liquid crystal alignment and electrical properties and thus is suitable for use as a liquid crystal alignment agent, a liquid crystal alignment agent containing the same, a liquid crystal aligning film formed from the liquid crystal alignment agent, and a liquid crystal display device containing the liquid crystal aligning film.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: March 29, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Jung Ho Jo, Sung Joon Min, Sang Mi Lee, Kichul Koo, Jun Young Yoon, Hyeong Seuk Yun, Yoon Bin Lim, Seongku Kim
  • Patent number: 11279881
    Abstract: A liquid crystal aligning agent composition for preparing a liquid crystal alignment film having enhanced stability and exhibiting excellent electrical characteristics, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the liquid crystal alignment film.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 22, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Jung Ho Jo, Hang Ah Park, Jun Young Yoon, Hyeong Seuk Yun
  • Patent number: 11268028
    Abstract: A liquid crystal alignment agent composition for producing a liquid crystal alignment film having enhanced alignment property and stability and a high voltage holding ratio, a method of producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same, are provided.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: March 8, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Sung Joon Min, Hang Ah Park, Hoonseo Park, Hyeong Seuk Yun, Jung Ho Jo
  • Patent number: 11230670
    Abstract: The present invention relates to a liquid crystal aligning agent composition for producing a liquid crystal alignment film having improved film strength together with liquid crystal alignment properties, a method for producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: January 25, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Sang Mi Lee, Hee Han, Jung Ho Jo, Sung Joon Min, Hang Ah Park, Soon Ho Kwon, Jun Young Yoon, Hyeong Seuk Yun, Seongku Kim, Hoonseo Park
  • Patent number: 11209699
    Abstract: A liquid crystal aligning agent composition for forming a liquid crystal alignment film that can exhibit excellent alignment and electrical characteristics and simultaneously having enhanced durability, a method for preparing a liquid crystal alignment film using the liquid crystal aligning agent composition, and a liquid crystal alignment film comprising an aligned and cured product of the liquid crystal aligning agent composition and a liquid crystal display device comprising the liquid crystal alignment film.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: December 28, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Seongku Kim, Hee Han, Jung Ho Jo, Sung Joon Min, Soon Ho Kwon, Jun Young Yoon, Hyeong Seuk Yun, Hoonseo Park
  • Patent number: 11142697
    Abstract: The present invention relates to a liquid crystal aligning agent composition capable of securing a high imidization rate under relatively mild curing conditions, minimizing side reactions and thus having excellent stability, a method for producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: October 12, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jung Ho Jo, Hee Han, Sung Joon Min, Hang Ah Park, Sang Mi Lee, Soon Ho Kwon, Jun Young Yoon, Hyeong Seuk Yun, Seongku Kim
  • Patent number: 11073728
    Abstract: The present invention provides a liquid crystal alignment film not only having an excellent alignment property and stability, but also having high film strength, and thus exhibiting excellent durability and a high residual image property, a method for preparing the same, and a liquid crystal display device using the same.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: July 27, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hyeong Seuk Yun, Jung Ho Jo, Sung Joon Min, Hee Han, Hang Ah Park, Sang Mi Lee, Soon Ho Kwon, Jun Young Yoon
  • Patent number: 11036089
    Abstract: The present invention provides a liquid crystal alignment film not only having an excellent alignment property and stability, but also having high film strength, and thus exhibiting excellent durability and a high residual image property, a method for preparing the same, and a liquid crystal display device using the same.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: June 15, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hyeong Seuk Yun, Jung Ho Jo, Sung Joon Min, Hee Han, Hang Ah Park, Sang Mi Lee, Soon Ho Kwon, Jun Young Yoon
  • Publication number: 20210155853
    Abstract: A liquid crystal aligning agent composition for forming a liquid crystal alignment film having improved electrical characteristics and high reliability while exhibiting excellent alignment properties and durability, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the liquid crystal alignment film.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 27, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hang Ah PARK, Jung Ho JO, Jun Young YOON, Hyeong Seuk YUN
  • Patent number: 11008537
    Abstract: The present invention relates to a cleaning composition for a liquid crystal alignment layer, a manufacturing method of a liquid crystal alignment layer using the same, and a liquid crystal display device including the liquid crystal alignment layer manufactured by the manufacturing method. More specifically, the present invention relates to a cleaning composition for a liquid crystal alignment layer that is capable of solving a non-uniformity problem of the liquid crystal alignment layer and effectively removing an ionic byproduct on a polymer surface to increase anisotropy of the liquid crystal alignment layer, by using a cleaning composition including a specific solvent in a cleaning process after a UV alignment process, and a manufacturing method of a liquid crystal alignment layer.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 18, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hee Han, Jun Young Yoon, Jung Ho Jo, Hang Ah Park, Soon Ho Kwon, Hyeong Seuk Yun
  • Publication number: 20210139780
    Abstract: The present invention relates to a polymer having excellent liquid crystal alignment and electrical properties and thus is suitable for use as a liquid crystal alignment agent, a liquid crystal alignment agent containing the same, a liquid crystal aligning film formed from the liquid crystal alignment agent, and a liquid crystal display device containing the liquid crystal aligning film.
    Type: Application
    Filed: May 14, 2018
    Publication date: May 13, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Jung Ho JO, Sung Joon MIN, Sang Mi LEE, Kichul KOO, Jun Young YOON, Hyeong Seuk YUN, Yoon Bin LIM, Seongku KIM
  • Publication number: 20210130695
    Abstract: A liquid crystal alignment agent composition for producing a liquid crystal alignment film having enhanced alignment property and stability and a high voltage holding ratio, a method of producing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the same, are provided.
    Type: Application
    Filed: October 10, 2018
    Publication date: May 6, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Sung Joon MIN, Hang Ah PARK, Hoonseo PARK, Hyeong Seuk YUN, Jung Ho JO