Patents by Inventor Byoung Jun Mun

Byoung Jun Mun 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: 20210173261
    Abstract: An exemplary embodiment of the present application relates to a retardation film including: an acrylate-based resin; a retardation adjusting agent having a glass transition temperature (Tg) of 130° C. or more; and a composition comprising a triazine-based birefringence adjusting agent or a cured product thereof, in which the triazine-based birefringence adjusting agent is included in an amount of 5 parts by weight to 15 parts by weight, based on 100 parts by weight of the acrylate-based resin; a polarizing plate comprising the same, and a liquid crystal display device comprising the same.
    Type: Application
    Filed: April 18, 2019
    Publication date: June 10, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Jun MUN, Nam Jeong LEE, Joonghoon LEE, Sungho HWANG
  • Publication number: 20210122909
    Abstract: The present application relates to a retardation film including a composition or a cured product thereof, the composition comprising: an acrylate-based resin having a glass transition temperature (Tg) of 120° C.; or more; a retardation adjusting agent comprising a styrene monomer; and a triazine-based birefringence adjusting agent, in which the triazine-based birefringence adjusting agent is included in an amount of more than 5 parts by weight and 15 parts by weight or less, based on 100 parts by weight of the acrylate-based resin; a polarizing plate comprising the same, and a liquid crystal display device comprising the same.
    Type: Application
    Filed: April 18, 2019
    Publication date: April 29, 2021
    Inventors: Byoung Jun Mun, Nam Jeong Lee, Joonghoon Lee, Sungho Hwang
  • Patent number: 10816712
    Abstract: The optical film according to the present invention uses polymethylmethacrylate that does not comprise cyclic monomers, but has excellent dimensional stability and optical properties, and thus, can be usefully used as a protection film of a polarization plate.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: October 27, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Byoung Jun Mun, Joong Hoon Lee, Sung Ho Hwang, Sei Jung Park, Heon-Sik Song
  • Publication number: 20200136094
    Abstract: The present application relates to a circularly polarizing plate and a use thereof. The present application can provide a circularly polarizing plate, which can be applied to a display device such as an organic light emitting display device to minimize blocking of light in the visible light region affecting image quality while blocking harmful ultraviolet rays appropriately and also has excellent durability. In addition, the present application can provide a circularly polarizing plate having excellent compensation characteristics at a viewing angle while ensuring process simplification and cost competitiveness.
    Type: Application
    Filed: July 10, 2018
    Publication date: April 30, 2020
    Inventors: Hyuk YOON, Nam Jeong LEE, Jong Sung PARK, Moon Soo PARK, Jae Ho JUNG, Ji Sung PARK, Byoung Jun MUN
  • Patent number: 10633530
    Abstract: The resin composition for an optical material according to the present invention has features that it can implement a low retardation value during the preparation of an optical film, by using a polycarbonate composition satisfying a specific condition as a retardation-adjusting agent while using polymethyl methacrylate not containing a monomer having a cyclic structure at the main chain of the polymer.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: April 28, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Joong Hoon Lee, Sei Jung Park, Sung Ho Hwang, Byoung Jun Mun, Heon-Sik Song
  • Publication number: 20190025489
    Abstract: The optical film according to the present invention uses polymethylmethacrylate that does not comprise cyclic monomers, but has excellent dimensional stability and optical properties, and thus, can be usefully used as a protection film of a polarization plate.
    Type: Application
    Filed: May 29, 2017
    Publication date: January 24, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Jun Mun, Joong Hoon Lee, Sung Ho Hwang, Sei Jung Park, Heon-Sik Song
  • Publication number: 20180273742
    Abstract: The resin composition for an optical material according to the present invention has features that it can implement a low retardation value during the preparation of an optical film, by using a polycarbonate composition satisfying a specific condition as a retardation-adjusting agent while using polymethyl methacrylate not containing a monomer having a cyclic structure at the main chain of the polymer.
    Type: Application
    Filed: August 8, 2017
    Publication date: September 27, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Joong Hoon Lee, Sei Jung Park, Sung Ho Hwang, Byoung Jun Mun, Heon-Sik Song