Patents by Inventor Jung-Ho Jo

Jung-Ho Jo 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: 20200208055
    Abstract: 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 including the same, a liquid crystal alignment film formed from the liquid crystal alignment agent, and a liquid crystal display device including the liquid crystal alignment film are provided.
    Type: Application
    Filed: September 20, 2018
    Publication date: July 2, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Seongku KIM, Sung Joon MIN, Hang Ah PARK, Jun Young YOON, Jung Ho JO
  • 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
  • Publication number: 20200165521
    Abstract: 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 including the same, a liquid crystal alignment film formed from the liquid crystal alignment agent, and a liquid crystal display device including the liquid crystal alignment film are provided.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 28, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Jung Ho JO, Sung Joon MIN, Hang Ah PARK, Jun Young YOON
  • Publication number: 20200165522
    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 28, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Seongku KIM, Sung Joon MIN, Hoonseo PARK, Hyeong Seuk YUN, Sang Mi LEE, Jung Ho JO
  • Publication number: 20200148953
    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: Application
    Filed: October 22, 2018
    Publication date: May 14, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Jung Ho JO, Hang Ah PARK, Jun Young YOON, Hyeong Seuk YUN
  • Publication number: 20200124922
    Abstract: Provided is a liquid crystal aligning agent composition comprising a hindered amine-based light stabilizer and a polyamic acid polymer derived from a diamine, 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: March 29, 2019
    Publication date: April 23, 2020
    Inventors: Sungjoon MIN, Jung Ho JO, Soonho KWON, Hangah PARK, Hyeongseuk YUN
  • 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: 20200063035
    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: Application
    Filed: October 22, 2018
    Publication date: February 27, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Soon Ho KWON, Hang Ah PARK, Jun Young YOON, Hyeong Seuk YUN, Jung Ho JO
  • 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
  • Publication number: 20200024521
    Abstract: The present invention relates to a liquid crystal aligning agent composition including a terminal modifier of a specific chemical structure together with a polyimide or a precursor polymer thereof.
    Type: Application
    Filed: January 4, 2019
    Publication date: January 23, 2020
    Inventors: Seongku KIM, Jung-Ho JO
  • Patent number: 10526513
    Abstract: There are provided a composition for forming an adhesive layer of a dicing film, including: a polymer additive including at least one polymer selected from the group consisting of a polymer containing a (meth)acrylate-based functional group and a non-polar functional group, a (meth)acrylate-based polymer containing at least one fluorine, and a silicon-modified (meth)acrylate-based polymer containing a reactive functional group; an adhesive binder; and a photoinitiator, wherein a weight ratio of the polymer additive to the adhesive binder is 0.01% to 4.5%, a dicing film including an adhesive layer including the composition, a dicing die bonding film including the dicing film, and a method for dicing a semiconductor wafer using the dicing die bonding film.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: January 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Young Kook Kim, Hee Jung Kim, Se Ra Kim, Jung Ho Jo, Jung Hak Kim, Seung Hee Nam, Kwang Joo Lee
  • 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: 20200002615
    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: Application
    Filed: September 21, 2018
    Publication date: January 2, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hyeong Seuk YUN, Sung Joon MIN, Jun Young YOON, Jung Ho JO
  • Publication number: 20200002614
    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: Application
    Filed: June 26, 2018
    Publication date: January 2, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Sang Mi LEE, Jung Ho JO, Hang Ah PARK, Hyeong Seuk YUN, Jun Young YOON
  • Publication number: 20200002478
    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: January 2, 2020
    Applicant: 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
  • 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
  • Publication number: 20190256778
    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: Application
    Filed: August 9, 2018
    Publication date: August 22, 2019
    Applicant: 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: 10338020
    Abstract: The present invention relates to a method for measuring metal ion permeability of a polymer film, comprising the steps of: applying a voltage to the polymer film at a temperature of 5° C. to 250° C., while one side of the polymer film is brought into contact with an electrolyte comprising metal ions, an organic solvent and an aqueous solvent; and measuring the change rate of resistance or change rate of current of the polymer film according to time, after the voltage is applied, and a device for measuring metal ion permeability of a polymer film used therefor.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: July 2, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jung Hak Kim, Young Kook Kim, Kwang Joo Lee, Hee Jung Kim, Se Ra Kim, Jung Ho Jo, Seung Hee Nam, Ji Ho Han