Patents by Inventor Ji Hoon Sohn

Ji Hoon Sohn 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: 6827426
    Abstract: A method for fabricating a plasma display panel can improve contrast of a panel by using an inkjet printing method in forming a fluorescent layer in the fabrication process of the plasma display panel. Also, after charging a liquid flake of fluorescent ink with a charge of a predetermined polarity, contrast of the panel can be improved by inducing the injection direction of the liquid flake by charging an address electrode with a charge having an opposite polarity to the liquid flake so that the charged liquid flake can be printed in the center portion of the cell region.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: December 7, 2004
    Assignee: LG Electronics Inc.
    Inventors: Eun A Moon, Young Jae Cho, Ji Hoon Sohn, Bum Jin Bae
  • Patent number: 6802905
    Abstract: Disclosed is a manufacturing apparatus for a plasma display panel (PDP) to form a fluorescent material film in the PDP, the apparatus comprising a lower table; a lower rail formed on the lower table; a panel mounting portion operated on the lower rail for mounting a panel detachably; an upper fixation plate installed above the lower table; and a plurality of fluorescent material ink spread units fixed to the upper fixation plate and having a plurality of nozzle holes corresponding to non-applied rows for forming fluorescent material on the fluorescent material film of the panel, wherein a sophisticated spread of the fluorescent material is performed more efficiently.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: October 12, 2004
    Assignee: LG Electronics Inc.
    Inventors: Ji-Hoon Sohn, Eun-A Moon, Bum-Jin Bae, Young-Jae Cho, Byung-Gil Ryu
  • Patent number: 6799826
    Abstract: A device and method for fabricating a display panel having ink-jet printing applied thereto is disclosed, in which it is possible to simplify fabricating process steps and to reduce production cost, and to prevent pattern failure. The device includes a stag having a hole and supporting a substrate; one or more ink-jet heads having nozzles spraying pattern forming solution onto the substrate; and one or more cameras positioned below the stage so as to monitor the nozzles through the holes.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: October 5, 2004
    Assignee: LG Electronics Inc.
    Inventors: Eun A Moon, Bum Jin Bae, Young Jae Cho, Ji Hoon Sohn, Byung Gil Ryu
  • Publication number: 20030189604
    Abstract: Device and method for fabricating a display panel having ink-jet printing applied thereto, the device including a stage for supporting a substrate, a base having one or more than one rail for transporting the stage, and one or more than one ink-jet head rotatable by an angel for spraying a pattern forming solution to the substrate, thereby reducing a fabrication cost and simplifying a fabrication process.
    Type: Application
    Filed: December 17, 2002
    Publication date: October 9, 2003
    Applicant: LG Electronics Inc.
    Inventors: Bum Jin Bae, Eun A. Moon, Young Jae Cho, Ji Hoon Sohn, Byung Gil Ryu
  • Publication number: 20030189605
    Abstract: A method for fabricating a plasma display panel can improve contrast of a panel by using an inkjet printing method in forming a fluorescent layer in the fabrication process of the plasma display panel. Also, after charging a liquid flake of fluorescent ink with a charge of a predetermined polarity, contrast of the panel can be improved by inducing the injection direction of the liquid flake by charging an address electrode with a charge having an opposite polarity to the liquid flake so that the charged liquid flake can be printed in the center portion of the cell region.
    Type: Application
    Filed: January 7, 2003
    Publication date: October 9, 2003
    Inventors: Eun A. Moon, Young Jae Cho, Ji Hoon Sohn, Bum Jin Bae
  • Publication number: 20030189606
    Abstract: A device and method for fabricating a display panel having ink-jet printing applied thereto is disclosed, in which it is possible to simplify fabricating process steps and to reduce production cost, and to prevent pattern failure. The device includes a stag having a hole and supporting a substrate; one or more ink-jet heads having nozzles spraying pattern forming solution onto the substrate; and one or more cameras positioned below the stage so as to monitor the nozzles through the holes.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 9, 2003
    Applicant: LG Electronics Inc.
    Inventors: Eun A. Moon, Bum Jim Bae, Young Jae Cho, Ji Hoon Sohn, Byung Gil Ryu
  • Publication number: 20030101930
    Abstract: Disclosed is a manufacturing apparatus for a plasma display panel (PDP) to form a fluorescent material film in the PDP, the apparatus comprising a lower table; a lower rail formed on the lower table; a panel mounting portion operated on the lower rail for mounting a panel detachably; an upper fixation plate installed above the lower table; and a plurality of fluorescent material ink spread units fixed to the upper fixation plate and having a plurality of nozzle holes corresponding to non-applied rows for forming fluorescent material on the fluorescent material film of the panel, wherein a sophisticated spread of the fluorescent material is performed more efficiently.
    Type: Application
    Filed: November 1, 2002
    Publication date: June 5, 2003
    Applicant: LG Electronics Inc.
    Inventors: Ji-Hoon Sohn, Eun-A Moon, Bum-Jin Bae, Young-Jae Cho, Byung-Gil Ryu
  • Publication number: 20030076457
    Abstract: A color filter substrate of an LCD includes: a substrate having a plurality of pixel regions; a first black matrix formed between the pixel regions on the substrate; a second black matrix formed at an upper portion of the first black matrix and separating each pixel region; and a color layer formed at the pixel region. Overflowing of the ink solution caused as the characteristics of the resin black matrix is changed due to the absorption of the solvent contained in the ink solution is prevented, an yield of the ink of the color filter can be improved, and a reliability of process can be obtained.
    Type: Application
    Filed: October 23, 2002
    Publication date: April 24, 2003
    Applicant: LG Electronics Inc.
    Inventors: Ji-Hoon Sohn, Eun-A Moon, Bum-Jin Bae, Young-Jae Cho, Byung-Gil Ryu