Patents by Inventor Young Wan Kwon

Young Wan Kwon 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: 7286197
    Abstract: A liquid crystal display (LCD) realizes a high brightness by using cholesteric liquid crystal (CLC) in a color filter and a polarizer, and improves viewing angles by using a hologram diffuser. The LCD includes a back light unit to produce and supply light, and a collimating sheet to collimate the light supplied by the back light unit. A CLC polarizer transmits left-circularly polarized light from the collimating sheet, and reflects other light. A lower substrate is disposed above the CLC polarizer, and an upper substrate is disposed above the lower substrate and includes a holographic diffuser which diffuses light without altering a polarization of the light. A liquid crystal layer is disposed between the lower substrate and the upper substrate, and a color filter layer which transmits only predetermined wavelengths of light is also disposed between the lower substrate and the upper substrate. An upper linear polarizer is located above the upper substrate.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: October 23, 2007
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Young-Wan Kwon, Jong-Weon Moon
  • Patent number: 7283187
    Abstract: A hologram diffuser for a liquid crystal display wherein a resin layer with a desired thickness is formed on an upper substrate. A hologram pattern is formed in the resin layer using a hologram plate. A smoothing film with a desired thickness is formed on the hologram layer provided with the hologram pattern. Accordingly, it is possible to assure a wide visual angle and realize a high picture quality.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: October 16, 2007
    Assignees: LG Philips LCD Co., Ltd., LG Electronics Inc.
    Inventors: Young Wan Kwon, Jong Weon Moon, Chul Park, Sung Woo Noh, Seon Gyoung Kim
  • Patent number: 6963380
    Abstract: A hologram diffuser for a liquid crystal display wherein a resin layer with a desired thickness is formed on an upper substrate. A hologram pattern is formed in the resin layer using a hologram plate. A smoothing layer with a desired thickness is formed on the hologram layer provided with the hologram pattern. Accordingly, it is possible to assure a wide visual angle and realize a high picture quality.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: November 8, 2005
    Assignees: LG. Philips LCD, Co., Ltd., LG Electronics Inc.
    Inventors: Young Wan Kwon, Jong Weon Moon, Chul Park, Sung Woo Noh, Seon Gyoung Kim
  • Publication number: 20040223102
    Abstract: A liquid crystal display (LCD) realizes a high brightness by using cholesteric liquid crystal (CLC) in a color filter and a polarizer, and improves viewing angles by using a hologram diffuser. The LCD includes a back light unit to produce and supply light, and a collimating sheet to collimate the light supplied by the back light unit. A CLC polarizer transmits left-circularly polarized light from the collimating sheet, and reflects other light. A lower substrate is disposed above the CLC polarizer, and an upper substrate is disposed above the lower substrate and includes a holographic diffuser which diffuses light without altering a polarization of the light. A liquid crystal layer is disposed between the lower substrate and the upper substrate, and a color filter layer which transmits only predetermined wavelengths of light is also disposed between the lower substrate and the upper substrate. An upper linear polarizer is located above the upper substrate.
    Type: Application
    Filed: June 10, 2004
    Publication date: November 11, 2004
    Applicant: LG. Philips LCD Co., Ltd.
    Inventors: Young-Wan Kwon, Jong-Weon Moon
  • Patent number: 6768528
    Abstract: A liquid crystal display (LCD) realizes a high brightness by using cholesteric liquid crystal (CLC) in a color filter and a polarizer, and improves viewing angles by using a hologram diffuser. The LCD includes a back light unit to produce and supply light, and a collimating sheet to collimate the light supplied by the back light unit. A CLC polarizer transmits left-circularly polarized light from the collimating sheet, and reflects other light. A lower substrate is disposed above the CLC polarizer, and an upper substrate is disposed above the lower substrate and includes a holographic diffuser which diffuses light without altering a polarization of the light. A liquid crystal layer is disposed between the lower substrate and the upper substrate, and a color filter layer which transmits only predetermined wavelengths of light is also disposed between the lower substrate and the upper substrate. An upper linear polarizer is located above the upper substrate.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: July 27, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Young-Wan Kwon, Jong-Weon Moon
  • Patent number: 6732643
    Abstract: Disclosed is a method for forming a pattern of a LCD device using a printing process, in which additive for detachment corresponding to detachment accelerant is coated in a groove of a cliché filled with ink, thereby easily transferring ink to a layer to be processed. A surface of the layer to be processed is processed chemically or physically to enhance an adhesive force with the ink.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: May 11, 2004
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Young Wan Kwon, Myoung Kee Baek
  • Publication number: 20030084796
    Abstract: Disclosed is a method for forming a pattern of a LCD device using a printing process, in which additive for detachment corresponding to detachment accelerant is coated in a groove of a cliché filled with ink, thereby easily transferring ink to a layer to be processed. A surface of the layer to be processed is processed chemically or physically to enhance an adhesive force with the ink.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 8, 2003
    Inventors: Young Wan Kwon, Myoung Kee Baek