Patents by Inventor Hee Han

Hee Han 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: 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: 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: 11149204
    Abstract: Provided is a liquid crystal alignment agent composition comprising a terminal modifier compound containing an amino group together with a polyimide containing an acid anhydride group at its terminus or a precursor polymer thereof, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display using the same.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: October 19, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Seongku Kim, Jung Ho Jo, Hoonseo Park, Hee Han, Jun Young Yoon
  • 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: 11137644
    Abstract: The present invention relates to a polymer which is excellent in terms of liquid crystal alignment property, durability, and electrical characteristics, and thus is suitable for use in a liquid crystal aligning agent, a liquid crystal aligning agent composition including the same, a liquid crystal alignment film formed from the liquid crystal aligning agent composition, and a liquid crystal display device including the liquid crystal alignment film.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: October 5, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Seongku Kim, Hee Han, Jung Ho Jo, Sung Joon Min, Soon Ho Kwon, Jun Young Yoon, Hyeongseuk Yun, Hoonseo Park
  • Patent number: 11118113
    Abstract: Provided is a liquid crystal alignment agent composition comprising a terminal modifier compound containing an amino group together with a polyimide containing an acid anhydride group at its terminus or a precursor polymer thereof, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display using the same.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 14, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Seongku Kim, Jung Ho Jo, Hoonseo Park, Hee Han, Jun Young Yoon
  • 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
  • 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: 20210130694
    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: Application
    Filed: August 9, 2018
    Publication date: May 6, 2021
    Applicant: 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: 10982147
    Abstract: The present invention relates to a liquid crystal aligning agent composition for forming a liquid crystal alignment film exhibiting excellent alignment and electrical characteristics and simultaneously having excellent film strength, 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: August 9, 2018
    Date of Patent: April 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Seongku Kim, Hee Han, Jung Ho Jo, Sung Joon Min, Sang Mi Lee, Soon Ho Kwon, Jun Young Yoon, Hyeong Seuk Yun, Hoonseo Park
  • Patent number: 10696901
    Abstract: Provided are a method of manufacturing a liquid crystal alignment layer, a liquid crystal alignment layer manufactured by using the same, and a liquid crystal display device including the liquid crystal alignment layer. More specifically, provided are the method of manufacturing the liquid crystal alignment layer with enhanced alignment property and stability, in which a liquid crystal aligning agent is applied onto a substrate, and after drying, alignment treatment is immediately performed by light irradiation while omitting a high-temperature heat treatment process, and then the alignment-treated coating film is cured by heat treatment, thereby reducing light irradiation energy required in the process and simplifying the process by omitting the high-temperature heat treatment process before light irradiation, the liquid crystal alignment layer, and the liquid crystal display device including the same.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: June 30, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jung Ho Jo, Hang Ah Park, Soon Ho Kwon, Hee Han, Jun Young Yoon, Hyeong Seuk Yun
  • Publication number: 20200190405
    Abstract: Provided is a liquid crystal alignment agent composition comprising a terminal modifier compound containing an amino group together with a polyimide containing an add anhydride group at its terminus or a precursor polymer thereof, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display using the same.
    Type: Application
    Filed: April 17, 2019
    Publication date: June 18, 2020
    Inventors: Seongku KIM, Jung Ho JO, Hoonseo PARK, Hee HAN, Jun Young YOON
  • Publication number: 20200181495
    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: Application
    Filed: June 26, 2018
    Publication date: June 11, 2020
    Applicant: 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: 10606128
    Abstract: The present invention relates to a method for preparing a photo-alignment layer. The photo-alignment layer prepared by the preparation method exhibits a high imidization ratio as well as an excellent aligning stability of liquid crystal, chemical resistance and strength, and has an excellent afterimage suppressing effect by an AC driving of a liquid crystal display element.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: March 31, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Hee Han, Jung Ho Jo, Hang Ah Park, Jun Young Yoon, Hyeong Seuk Yun
  • Publication number: 20200040258
    Abstract: The present invention relates to a polymer which is excellent in terms of liquid crystal alignment property, durability, and electrical characteristics, and thus is suitable for use in a liquid crystal aligning agent, a liquid crystal aligning agent composition including the same, a liquid crystal alignment film formed from the liquid crystal aligning agent composition, and a liquid crystal display device including the liquid crystal alignment film.
    Type: Application
    Filed: August 16, 2018
    Publication date: February 6, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Seongku KIM, Hee HAN, Jung Ho JO, Sung Joon MIN, Soon Ho KWON, Jun Young YOON, Hyeongseuk YUN, Hoonseo PARK
  • Patent number: 10526540
    Abstract: The present invention relates to a liquid crystal aligning agent for use as an alignment layer for liquid crystal display. More specifically, the present invention relates to a liquid crystal aligning agent capable of improving an imidization rate and thus exhibiting an excellent alignment state, a liquid crystal alignment layer comprising the same, a preparation method thereof and a liquid crystal display comprising the liquid crystal alignment layer.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: January 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Soon Ho Kwon, Jung Ho Jo, Hang Ah Park, Hyeong Seuk Yun, Hee Han, Jun Young Yoon
  • Publication number: 20190390116
    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: Application
    Filed: June 26, 2018
    Publication date: December 26, 2019
    Applicant: 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