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: 11017721
    Abstract: The present disclosure relates to an organic light emitting display device including a display panel on which a plurality of data lines, a plurality of gate lines, a plurality of first power lines, a plurality of second power lines, and a plurality of pixels are disposed. Each of the plurality of pixels includes: a storage capacitor connected between a first node and a second node; a driving transistor including a gate electrode connected to the second node, a drain electrode connected to the power line, and a source electrode connected to the first node; an organic light emitting diode connected to the first node and the second power line; a first switching transistor connected to the second node and the data lines; and a second switching transistor connected to the first node and the first power lines.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: May 25, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: So Hyun Kim, Yu Sok Lim
  • Publication number: 20200234646
    Abstract: The present disclosure relates to an organic light emitting display device including a display panel on which a plurality of data lines, a plurality of gate lines, a plurality of first power lines, a plurality of second power lines, and a plurality of pixels are disposed. Each of the plurality of pixels includes: a storage capacitor connected between a first node and a second node; a driving transistor including a gate electrode connected to the second node, a drain electrode connected to the power line, and a source electrode connected to the first node; an organic light emitting diode connected to the first node and the second power line; a first switching transistor connected to the second node and the data lines; and a second switching transistor connected to the first node and the first power lines.
    Type: Application
    Filed: July 31, 2018
    Publication date: July 23, 2020
    Inventors: So Hyun KIM, Yu Sok LIM
  • Patent number: 10176746
    Abstract: Provided is a gate driver and a method of driving the same, which enables a voltage level of a Q node to be stably maintained in a blank section by: inputting a clock signal that directly provides a high level to the Q node through a reset signal input end of a reset signal for resetting the Q node of a gate driver integrated circuit; inputting a reset signal for each blank section between frames; or providing a higher gate high voltage and a lower gate low voltage. There may be provided a gate driver integrated circuit that has a robust structure with high reliability and avoids an error of a scan signal by maintaining the voltage level of the Q node to be stable in the blank section, and a method of driving the same.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 8, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Yu Sok Lim, Hyerin Kim
  • Publication number: 20180033363
    Abstract: Provided is a gate driver and a method of driving the same, which enables a voltage level of a Q node to be stably maintained in a blank section by: inputting a clock signal that directly provides a high level to the Q node through a reset signal input end of a reset signal for resetting the Q node of a gate driver integrated circuit; inputting a reset signal for each blank section between frames; or providing a higher gate high voltage and a lower gate low voltage. There may be provided a gate driver integrated circuit that has a robust structure with high reliability and avoids an error of a scan signal by maintaining the voltage level of the Q node to be stable in the blank section, and a method of driving the same.
    Type: Application
    Filed: December 21, 2016
    Publication date: February 1, 2018
    Inventors: Yu Sok LIM, Hyerin KIM
  • 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
  • Patent number: 9209414
    Abstract: A display device is discussed which can include: a flexible substrate defined into a first area, a second area bent from an edge of the first area, and a third area outwardly expanded from the second area; a thin film transistor layer disposed on the substrate; an organic emission layer disposed on the thin film transistor layer; an encapsulation layer disposed on the organic emission layer; a polarization layer disposed on the encapsulation layer; and a cover window disposed on the polarization layer. The polarization layer is formed on the encapsulation layer opposite to the first and third areas of the substrate.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: December 8, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yu Sok Lim, Byung Chul Ahn, Chang Dong Kim, Tae Joon Ahn, Sang Moo Song
  • Publication number: 20150144921
    Abstract: A display device is discussed which can include: a flexible substrate defined into a first area, a second area bent from an edge of the first area, and a third area outwardly expanded from the second area; a thin film transistor layer disposed on the substrate; an organic emission layer disposed on the thin film transistor layer; an encapsulation layer disposed on the organic emission layer; a polarization layer disposed on the encapsulation layer; and a cover window disposed on the polarization layer. The polarization layer is formed on the encapsulation layer opposite to the first and third areas of the substrate.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Yu Sok LIM, Byung Chul AHN, Chang Dong KIM, Tae Joon AHN, Sang Moo SONG
  • 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: 8844128
    Abstract: A method for manufacturing an electrophoretic display device includes forming partition walls for defining a plurality of pixel regions on a lower substrate; filling charged particles into the plurality of pixel regions; filling a pixel solvent in the plurality of pixel regions having been filled with the charged particles; and attaching the lower substrate and an upper substrate to each other.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: September 30, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Yu Sok Lim, Myoung Ho Lee, Young Mu Oh, Seung Han Paek, Young Jun Yu, Sung Jin Park, Seung-Hee Kang
  • 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: 20120073116
    Abstract: A method for manufacturing an electrophoretic display device includes forming partition walls for defining a plurality of pixel regions on a lower substrate; filling charged particles into the plurality of pixel regions; filling a pixel solvent in the plurality of pixel regions having been filled with the charged particles; and attaching the lower substrate and an upper substrate to each other.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 29, 2012
    Inventors: Yu Sok LIM, Myoung Ho LEE, Young Mu OH, Seung Han PAEK, Young Jun YU, Sung Jin PARK, Seung-Hee KANG
  • 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