Patents by Inventor Min-Jun Gim

Min-Jun Gim 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: 20200159061
    Abstract: A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, a reflective layer, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state different from the first orientation state upon application of a voltage, each of the polymer film substrates has an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.
    Type: Application
    Filed: April 30, 2018
    Publication date: May 21, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Eun Jung Lim, Jung Sun You, Jin Hong Kim, Dong Hyun Oh, Hyun Jun Lee
  • Publication number: 20200142246
    Abstract: A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a first orientation state and a second orientation state when a voltage is applied, and a polarizer, wherein each of the first and second polymer film substrates have in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.
    Type: Application
    Filed: April 30, 2018
    Publication date: May 7, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Eun Jung Lim, Jung Sun You, Dong Hyun Oh, Hyun Jun Lee, Nam Hun Kim
  • Publication number: 20200096807
    Abstract: A light modulation device is disclosed herein. In some embodiments, a light modulation device includes a first polymer film substrate, a second polymer film substrate, an active liquid crystal layer disposed between the first and second polymer film substrates, wherein the active liquid crystal layer is capable of switching between a vertical orientation state and a twisting orientation state upon application of a voltage, each of the first and second polymer film substrates has an in-plane retardation of 4,000 nm or more for light having a wavelength of 550 nm, a ratio of an elongation (E1) in a first direction to an elongation (E2) in a second direction perpendicular to the first direction of 3 or more, and wherein an angle formed by the first directions of the first and second polymer film substrates is in a range of 0 degrees to 10 degrees.
    Type: Application
    Filed: April 30, 2018
    Publication date: March 26, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Eun Jung Lim, Jung Sun You, Hyun Jun Lee, In Ju Mun, Dong Hyun Oh, Nam Gyu Kim, Jin Hong Kim, Hyo Jin Lee, Nam Hun Kim
  • Publication number: 20190384094
    Abstract: The present application relates to a light modulation device and a use thereof. The present application can provide a light modulation device having both excellent mechanical properties and optical properties by applying a polymer film that is also optically anisotropic and mechanically anisotropic to a substrate.
    Type: Application
    Filed: April 30, 2018
    Publication date: December 19, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Jun Lee, Eun Jung Lim, Jung Sun You, Min Jun Gim, Dong Hyun Oh, Jin Hong Kim
  • Patent number: 10162213
    Abstract: A method of producing a polarizing light-emitting film using photoluminescent ferroelectric liquid crystal molecules, and a liquid crystal display including the polarizing light-emitting film, are described. The method includes forming a droplet by positioning photoluminescent ferroelectric liquid crystal molecules on a substrate modified to be molecular phobic, and applying an electric field in a horizontal direction to uniaxially orient the liquid crystal molecules. By such method, it is possible to produce the polarizing light-emitting film in which the photoluminescent ferroelectric liquid crystal molecules are uniaxially oriented to simultaneously act as the liquid crystal layer, the polarizing plate, and the color filter. The liquid crystal display including the polarizing light-emitting film is capable of improving polarization and contrast, and implementing colors even without a polarizing plate and color filter, thereby increasing light efficiency and power efficiency and reducing production cost.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: December 25, 2018
    Assignee: KOREA ADVANCED INSTITUTE INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Ki Yoon, Min-Jun Gim
  • Publication number: 20170108751
    Abstract: The present invention relates to a method of producing a polarizing light-emitting film using photoluminescent ferroelectric liquid crystal molecules, and a liquid crystal display including the polarizing light-emitting film, and more specifically, to a method of producing a polarizing light-emitting film including: forming a droplet by positioning photoluminescent ferroelectric liquid crystal molecules on a substrate modified to be molecular phobic, and applying an electric field in a horizontal direction to uniaxially orient the liquid crystal molecules, and a liquid crystal display including the polarizing light-emitting film.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 20, 2017
    Inventors: Dong Ki Yoon, Min-Jun Gim