Patents by Inventor Soon Bum Kwon

Soon Bum 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).

  • Method for controlling pretilt angle direction in a liquid crystal cell
    Patent number: 7145618
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: December 5, 2006
    Assignee: LG.Philips LCD Co., Ltd
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Choi, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
  • Liquid crystal display with alignment film of polyphenylenphthalamide-based material and method for fabricating the same
    Patent number: 7060332
    Abstract: An LCD and a method for fabricating the LCD includes a first substrate and a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a coating of a polyphenylenephthalamide based material on at least one of the substrates, thereby providing an LCD having a reduced residual image, a strong anchoring energy, and a high thermal stability is achieved.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: June 13, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Soon Bum Kwon, Man Hoan Lee, Su Hyun Park, Yuriy Reznikov, Yuriy Kurioz, Igor Gerus
  • Light irradiating device
    Patent number: 7061679
    Abstract: A light irradiating device for a photo-alignment process comprises an optical system and a first polarizer polarizing the light from the optical system. The light from the first polarizer is obliquely irradiated at an angle with respect to a normal direction of a stage on which a substrate is placed.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: June 13, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ki Hyuk Yoon, Young Seok Choi, Byung Duck Song, Soon Bum Kwon
  • Method for controlling pretilt angle direction in a liquid crystal cell
    Patent number: 6879363
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: April 12, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Chol, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
  • Reflective liquid crystal display device
    Publication number: 20040145690
    Abstract: A reflective liquid crystal display includes a linear polarizer for converting natural light into linearly polarized light; a retardation film for converting the linearly polarized light into circularly polarized light; a liquid crystal layer for varying the phase of the light differently depending on the presence or absence of an electric field; a cholesteric liquid crystal color filter for selectively reflecting light received from the liquid crystal layer; and a black background for absorbing light passing through the color filter.
    Type: Application
    Filed: January 14, 2004
    Publication date: July 29, 2004
    Inventors: Yong Beom Kim, Soon Bum Kwon, Heume Il Baek
  • Stereoscopic liquid crystal display device using a liquid crystal polymer film and fabricating method thereof
    Patent number: 6734923
    Abstract: A stereoscopic liquid crystal display device and method using a liquid crystal polymer film. Light transmitted through first and second micro-polarizing regions have different phases from each other, and light with different polarization properties is emitted.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: May 11, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Soon-Bum Kwon, Jin-Hee Jung, Hyung-Gi Hong
  • Method for fabricating a liquid crystal cell
    Patent number: 6721025
    Abstract: A method for fabricating a liquid crystal cell and related device includes providing an alignment layer of a light sensitive material on a substrate; and exposing the alignment layer to unpolarized or partially polarized light, to provide pretilt for the molecules of the alignment layer.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: April 13, 2004
    Assignee: LG.Philips LCD Co., Ltd
    Inventors: Joung Won Woo, Kyeong Jin Kim, Soon Bum Kwon, Ki Hyuk Yoon, Young Seok Choi, Jong Hyun Kim, Jin Hee Jung
  • Reflective liquid crystal display device
    Patent number: 6693689
    Abstract: A reflective liquid crystal display includes a linear polarizer for converting natural light into linearly polarized light; a retardation film for converting the linearly polarized light into circularly polarized light; a liquid crystal layer for varying the phase of the light differently depending on the presence or absence of an electric field; a cholesteric liquid crystal color filter for selectively reflecting light received from the liquid crystal layer; and a black background for absorbing light passing through the color filter.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: February 17, 2004
    Assignee: LG Philips LCD Co., Ltd.
    Inventors: Yong Beom Kim, Soon Bum Kwon, Heume Il Baek
  • Method for controlling pretilt angle direction in a liquid crystal cell
    Publication number: 20040027522
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Application
    Filed: August 11, 2003
    Publication date: February 12, 2004
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Choi, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
  • Method for controlling pretilt angle direction in a liquid crystal cell
    Patent number: 6633355
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: October 14, 2003
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Choi, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
  • Method for manufacturing a multi-domain liquid crystal cell
    Patent number: 6593986
    Abstract: A method for fabricating a multi-domain liquid crystal cell is disclosed, wherein first and second alignment directions are formed in first and second portions of an alignment layer provided on a substrate by selectively subjecting the first and second portions to different energy doses of linearly polarized ultraviolet light. Liquid crystal material is then injected between the one substrate and another substrate and into contact with the alignment layer, thereby obtaining a wide viewing angle in the liquid crystal device.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: July 15, 2003
    Assignee: LG Electronics Inc.
    Inventors: Soon Bum Kwon, Jong Hyun Kim, Oleg Yaroshchuk, Andrey Dyadyusha
  • Method for controlling pretilt angle direction in a liquid crystal cell
    Publication number: 20030117555
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Application
    Filed: July 22, 2002
    Publication date: June 26, 2003
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Chol, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
  • METHOD FOR MANUFACTURING A MULTI-DOMAIN LIQUID CRYSTAL CELL
    Publication number: 20030112395
    Abstract: A method for fabricating a multi-domain liquid crystal cell is disclosed, wherein first and second alignment directions are formed in first and second portions of an alignment layer provided on a substrate by selectively subjecting the first and second portions to different energy doses of linearly polarized ultraviolet light. Liquid crystal material is then injected between the one substrate and another substrate and into contact with the alignment layer, thereby obtaining a wide viewing angle in the liquid crystal device.
    Type: Application
    Filed: July 1, 1998
    Publication date: June 19, 2003
    Inventors: SOON BUM KWON, JONG HYUN KIM, OLEG YAROSHCHUK, ANDREY DYADYUSHA
  • Liquid crystal display device
    Patent number: 6572939
    Abstract: A liquid crystal display device comprises first and second substrates, an alignment layer including a pyranose polymer or a furanose polymer on at least one of the first and second substrates, and a liquid crystal layer between the first and second substrates. The liquid crystal display device is characterized by excellent thermostability, superior anchoring energy and uniform alignment of the liquid crystal achieved in a reduced treatment time without creating any flowing effect in the liquid crystal.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: June 3, 2003
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Soon Bum Kwon, Kyeong Jin Kim, Young Seok Choi, Gerus Igor Iranovich, Andrey Dyadyusha, Yuriy A. Reznikov
  • Method for controlling pretilt angle direction in a liquid crystal cell
    Publication number: 20030007116
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Application
    Filed: September 5, 2002
    Publication date: January 9, 2003
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Choi, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon
  • Liquid crystal display with alignment film of polyphenylenphthalamide-based material and method for fabricating the same
    Publication number: 20020182346
    Abstract: An LCD and a method for fabricating the LCD includes a first substrate and a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a coating of a polyphenylenephthalamide based material on at least one of the substrates, thereby providing an LCD having a reduced residual image, a strong anchoring energy, and a high thermal stability is achieved.
    Type: Application
    Filed: April 24, 2002
    Publication date: December 5, 2002
    Inventors: Soon Bum Kwon, Man Hoan Lee, Su Hyun Park, Yuriy Reznikov, Yuriy Kurioz, Igor Gerus
  • Method for fabricating a liquid crystal cell
    Publication number: 20020171795
    Abstract: A method for fabricating a liquid crystal cell and related device includes providing an alignment layer of a light sensitive material on a substrate; and exposing the alignment layer to unpolarized or partially polarized light, to provide pretilt for the molecules of the alignment layer.
    Type: Application
    Filed: June 17, 2002
    Publication date: November 21, 2002
    Inventors: Joung Won Woo, Kyeong Jin Kim, Soon Bum Kwon, Ki Hyuk Yoon, Young Seok Choi, Jong Hyun Kim, Jin Hee Jung
  • Method for manufacturing a multidomain liquid crystal display panel
    Patent number: 6475705
    Abstract: A method for manufacturing a multidomain liquid crystal display panel, including the steps of forming a photo-alignment layer on a substrate, positioning a mask having a plurality of regions with different photo-transmittances; and forming different alignment directions in different domains of the photo-alignment layer corresponding to each of the plurality of regions by irradiating the photo-alignment layer with light through the mask.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: November 5, 2002
    Assignee: LG Electronics Inc.
    Inventors: Soon Bum Kwon, Young Seok Choi, Yuriy Reznikov, Oleg Yaroshchuk
  • Stereoscopic liquid crystal display device using a liquid crystal polymer film and fabricating method thereof
    Publication number: 20020145682
    Abstract: A stereoscopic liquid crystal display device and method using a liquid crystal polymer film. Light transmitted through first and second micro-polarizing regions have different phases from each other, and light with different polarization properties is emitted.
    Type: Application
    Filed: March 6, 2002
    Publication date: October 10, 2002
    Inventors: Soon-Bum Kwon, Jin-Hee Jung, Hyung-Gi Hong
  • Method for fabricating a liquid crystal cell
    Patent number: 6462797
    Abstract: A method for fabricating a liquid crystal cell and related device includes providing an alignment layer of a light sensitive material on a substrate; and exposing the alignment layer to unpolarized or partially polarized light, to provide pretilt for the molecules of the alignment layer.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: October 8, 2002
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Joung Won Woo, Kyeong Jin Kim, Soon Bum Kwon, Ki Hyuk Yoon, Young Seok Choi, Jong Hyun Kim, Jin Hee Jung