Patents by Inventor Chang-Il Ryoo

Chang-Il Ryoo 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: 8716062
    Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: May 6, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Chang-Il Ryoo, Hyun-Sik Seo, Jong-Uk Bae
  • Publication number: 20140120659
    Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.
    Type: Application
    Filed: January 3, 2014
    Publication date: May 1, 2014
    Applicant: LG Display Co., Ltd.
    Inventors: Chang-Il RYOO, Hyun-Sik SEO, Jong-Uk BAE
  • Patent number: 8659017
    Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: February 25, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Chang-Il Ryoo, Hyun-Sik Seo, Jong-Uk Bae
  • Publication number: 20130277673
    Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.
    Type: Application
    Filed: June 20, 2013
    Publication date: October 24, 2013
    Inventors: Chang-Il RYOO, Hyun-Sik SEO, Jong-Uk BAE
  • Patent number: 8502229
    Abstract: An array substrate including a substrate having a pixel region, a gate line and a gate electrode on the substrate, the gate electrode being connected to the gate line, a gate insulating layer on the gate line and the gate electrode, an oxide semiconductor layer on the gate insulating layer, an auxiliary pattern on the oxide semiconductor layer, and source and drain electrodes on the auxiliary pattern, the source and drain electrodes being disposed over the auxiliary pattern and spaced apart from each other to expose a portion of the auxiliary pattern, the exposed portion of the auxiliary pattern exposing a channel region and including a metal oxide over the channel region, wherein a data line crosses the gate line to define the pixel region and is connected to the source electrode, a passivation layer on the source and drain electrodes and the data line.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 6, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Yub Kim, Chang-Il Ryoo
  • Patent number: 8497147
    Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the method includes forming a gate electrode on a substrate, forming a gate insulating layer on the gate electrode, forming an oxide semiconductor layer and an etch prevention layer on the gate insulating layer using a single mask, forming source and drain electrodes on the etch prevention layer, and forming a passivation layer including a contact hole on the source and drain electrodes and on the gate insulating layer, and forming a pixel electrode on the passivation layer and through the contact hole.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: July 30, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Chang-Il Ryoo, Hyun-Sik Seo, Jong-Uk Bae
  • Patent number: 8330696
    Abstract: A driving method of a liquid crystal display device includes steps of providing image data to a liquid crystal panel each frame, providing an image-data gate driving signal to the liquid crystal panel and inputting the image data to the liquid crystal panel, providing black data to the liquid crystal panel, providing a black-data gate driving signal to the liquid crystal panel and inputting the black data to the liquid crystal panel, and delaying the black-data gate driving signal when each frame starts.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: December 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Nyuck Cho, Chang Il Ryoo, Hae-Yeol Kim
  • Patent number: 8158466
    Abstract: An array substrate including a substrate having a pixel region, a gate line and a gate electrode on the substrate, the gate electrode being connected to the gate line, a gate insulating layer on the gate line and the gate electrode, an oxide semiconductor layer on the gate insulating layer, an auxiliary pattern on the oxide semiconductor layer, and source and drain electrodes on the auxiliary pattern, the source and drain electrodes being disposed over the auxiliary pattern and spaced apart from each other to expose a portion of the auxiliary pattern. Further, the exposed portion of the auxiliary pattern exposes a channel region and including a metal oxide over the channel region.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: April 17, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Yub Kim, Chang-Il Ryoo
  • Publication number: 20110291096
    Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the method includes forming a gate electrode on a substrate, forming a gate insulating layer on the gate electrode, forming an oxide semiconductor layer and an etch prevention layer on the gate insulating layer using a single mask, forming source and drain electrodes on the etch prevention layer, and forming a passivation layer including a contact hole on the source and drain electrodes and on the gate insulating layer, and forming a pixel electrode on the passivation layer and through the contact hole.
    Type: Application
    Filed: May 25, 2011
    Publication date: December 1, 2011
    Inventors: Chang-Il RYOO, Hyun-Sik Seo, Jong-Uk Bae
  • Publication number: 20100308324
    Abstract: An array substrate including a substrate having a pixel region, a gate line and a gate electrode on the substrate, the gate electrode being connected to the gate line, a gate insulating layer on the gate line and the gate electrode, an oxide semiconductor layer on the gate insulating layer, an auxiliary pattern on the oxide semiconductor layer, and source and drain electrodes on the auxiliary pattern, the source and drain electrodes being disposed over the auxiliary pattern and spaced apart from each other to expose a portion of the auxiliary pattern. Further, the exposed portion of the auxiliary pattern exposes a channel region and including a metal oxide over the channel region.
    Type: Application
    Filed: December 4, 2009
    Publication date: December 9, 2010
    Inventors: Yong-Yub Kim, Chang-Il Ryoo
  • Publication number: 20100245225
    Abstract: A driving method of a liquid crystal display device includes steps of providing image data to a liquid crystal panel each frame, providing an image-data gate driving signal to the liquid crystal panel and inputting the image data to the liquid crystal panel, providing black data to the liquid crystal panel, providing a black-data gate driving signal to the liquid crystal panel and inputting the black data to the liquid crystal panel, and delaying the black-data gate driving signal when each frame starts.
    Type: Application
    Filed: September 28, 2009
    Publication date: September 30, 2010
    Inventors: Hyung-Nyuck CHO, Chang Il Ryoo, Hae-Yeol Kim