Patents by Inventor Yu-Sok Lim

Yu-Sok Lim 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: 9274398
    Abstract: An electrophoretic display device includes a switching element on a substrate including a display area having a pixel region and a non-display area at a periphery of the display area, a passivation layer covering the switching element, a pixel electrode on the passivation layer and connected to the switching element, an electrophoresis film on the pixel electrode and including an ink layer and a base film, wherein the ink layer includes a plurality of charged particles, and the base film is formed of polyethylene terephthalate, a common electrode for generating an electric field with the pixel electrode to drive the electrophoresis film, and a color filter layer directly on the electrophoresis film, wherein the color filter layer is formed under temperatures of less than 100 degrees of Celsius.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: March 1, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Oh-Nam Kwon, Nack-Bong Choi, Choon-Ho Park, Yu-Sok Lim, Jong-Kwon Lee
  • Publication number: 20150138626
    Abstract: An electrophoretic display device includes a switching element on a substrate including a display area having a pixel region and a non-display area at a periphery of the display area, a passivation layer covering the switching element, a pixel electrode on the passivation layer and connected to the switching element, an electrophoresis film on the pixel electrode and including an ink layer and a base film, wherein the ink layer includes a plurality of charged particles, and the base film is formed of polyethylene terephthalate, a common electrode for generating an electric field with the pixel electrode to drive the electrophoresis film, and a color filter layer directly on the electrophoresis film, wherein the color filter layer is formed under temperatures of less than 100 degrees of Celsius.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 21, 2015
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Oh-Nam KWON, Nack-Bong CHOI, Choon-Ho PARK, Yu-Sok LIM, Jong-Kwon LEE
  • Patent number: 8970942
    Abstract: An electrophoretic display device includes a switching element on a substrate including a display area having a pixel region and a non-display area at a periphery of the display area, a passivation layer covering the switching element, a pixel electrode on the passivation layer and connected to the switching element, an electrophoresis film on the pixel electrode and including an ink layer and a base film, wherein the ink layer includes a plurality of charged particles, and the base film is formed of polyethylene terephthalate, a common electrode for generating an electric field with the pixel electrode to drive the electrophoresis film, and a color filter layer directly on the electrophoresis film, wherein the color filter layer is formed under temperatures of less than 100 degrees of Celsius.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: March 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Oh-Nam Kwon, Nack-Bong Choi, Choon-Ho Park, Yu-Sok Lim, Jong-Kwon Lee
  • Patent number: 8861069
    Abstract: Disclosed is an electrophoretic display (EPD) device and fabrication method thereof that has a simplified fabrication process and reduced fabrication costs. In the EPD device, a partition wall is formed directly on a first substrate having a pixel electrode and extended up a lateral surface of the partition wall to prevent dead areas in the pixel region, provide increased aperture ratio, and enhanced image quality.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: October 14, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Yu-Sok Lim, Oh-Nam Kwon, Seung-Han Paek, Choon-Ho Park
  • Patent number: 8570640
    Abstract: Disclosed herein is a method of fabricating an electrophoretic display device for reducing the fabrication cost and simplifying the fabrication process, and the method may include providing a substrate comprising a display region arranged with a plurality of pixels and a non-display region; forming a thin-film transistor on a first substrate; forming a passivation layer on the substrate formed with the thin-film transistor; forming a pixel electrode in the display region on the passivation layer and forming a partition wall in the non-display region; filling an electrophoretic material in a pixel inside the partition wall on the passivation layer; applying a sealing material to an upper portion of the electrophoretic material to form a sealing layer; depositing a transparent conductive material on the sealing layer to form a common electrode; and adhering the protection layer to an upper portion of the common electrode.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: October 29, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Yu-Sok Lim, Young-Jun Yu
  • Publication number: 20120050840
    Abstract: Disclosed herein is a method of fabricating an electrophoretic display device for reducing the fabrication cost and simplifying the fabrication process, and the method may include providing a substrate comprising a display region arranged with a plurality of pixels and a non-display region; forming a thin-film transistor on a first substrate; forming a passivation layer on the substrate formed with the thin-film transistor; forming a pixel electrode in the display region on the passivation layer and forming a partition wall in the non-display region; filling an electrophoretic material in a pixel inside the partition wall on the passivation layer; applying a sealing material to an upper portion of the electrophoretic material to form a sealing layer; depositing a transparent conductive material on the sealing layer to form a common electrode; and adhering the protection layer to an upper portion of the common electrode.
    Type: Application
    Filed: August 30, 2011
    Publication date: March 1, 2012
    Inventors: Yu-Sok LIM, Young-Jun Yu
  • Publication number: 20120008191
    Abstract: Disclosed is an electrophoretic display (EPD) device and fabrication method thereof that has a simplified fabrication process and reduced fabrication costs. In the EPD device, a partition wall is formed directly on a first substrate having a pixel electrode and extended up a lateral surface of the partition wall to prevent dead areas in the pixel region, provide increased aperture ratio, and enhanced image quality.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 12, 2012
    Inventors: Yu-Sok LIM, Oh-Nam Kwon, Seung-Han Paek, Choon-Ho Park
  • Publication number: 20110026099
    Abstract: An electrophoretic display device includes a switching element on a substrate including a display area having a pixel region and a non-display area at a periphery of the display area, a passivation layer covering the switching element, a pixel electrode on the passivation layer and connected to the switching element, an electrophoresis film on the pixel electrode and including an ink layer and a base film, wherein the ink layer includes a plurality of charged particles, and the base film is formed of polyethylene terephthalate, a common electrode for generating an electric field with the pixel electrode to drive the electrophoresis film, and a color filter layer directly on the electrophoresis film, wherein the color filter layer is formed under temperatures of less than 100 degrees of Celsius.
    Type: Application
    Filed: July 21, 2010
    Publication date: February 3, 2011
    Inventors: Oh-Nam Kwon, Nack-Bong Choi, Choon-Ho Park, Yu-Sok Lim, Jong-Kwon Lee