Patents by Inventor Dong Sook Chang

Dong Sook Chang 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: 8716779
    Abstract: A flash memory device includes an active region, drain contacts, a source contact line, and source contacts. The active regions are formed on a substrate extend at least from a source region to a drain region of the substrate. The drain contacts are formed over the active regions in the drain region. The source contact line is formed in the source region of the semiconductor substrate. The source contact line intersects the active regions and is continuously line-shaped. The source contact line includes source contacts formed at locations where the source contact line and the active regions intersect. The source contacts are zigzag-shaped and are separated from corresponding drain contacts by a given distance.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: May 6, 2014
    Assignee: Hynix Semiconductor Inc.
    Inventors: Mi Hye Kim, Dong Sook Chang
  • Patent number: 8236697
    Abstract: A method for manufacturing a semiconductor device which includes fine patterns having various critical dimensions (CDs) by adjusting a thickness of spacer used as an etching mask in Spacer Patterning Technology (SPT). The method for manufacturing a semiconductor device includes forming spacers at a different level over an etching target layer and etching the etching target layer exposed among the spacers.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: August 7, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Dong Sook Chang, Hyoung Soon Yune
  • Patent number: 8045139
    Abstract: An exposure apparatus of a semiconductor device may include an exposure light source; an asymmetric adjustment filter for asymmetrically adjusting intensity of a light which passes through the exposure light source; a photomask for passing the light of which intensity is adjusted by the asymmetric adjustment filter; a projection lens for projecting the light passing through the photomask; and a wafer stage for mounting a wafer on which an image is formed by the light from the projection lens.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: October 25, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byeong Ho Cho, Dong Sook Chang
  • Patent number: 8029949
    Abstract: Disclosed is a photomask for forming a contact hole arranged on a wafer in a zigzag form along a transverse direction, including: a light transmitting substrate; a main pattern disposed on the light transmitting substrate with a zigzag form as an upper main pattern disposed in a relatively upper portion and a lower main pattern disposed in a relatively lower portion are arranged alternately along a transverse direction; a first lower auxiliary pattern extending in a vertical direction and disposed adjacently to a lower portion of the upper main pattern; a first upper auxiliary pattern extending in a vertical direction and disposed adjacently to an upper portion of the lower main pattern; a second lower auxiliary pattern extending in the transverse direction and connecting the first lower auxiliary patterns with each other; and a second upper auxiliary pattern extending in the transverse direction and connecting the first upper auxiliary patterns with each other.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: October 4, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Hyun Jo Yang, Dong Sook Chang
  • Publication number: 20110024817
    Abstract: A flash memory device includes an active region, drain contacts, a source contact line, and source contacts. The active regions are formed on a substrate extend at least from a source region to a drain region of the substrate. The drain contacts are formed over the active regions in the drain region. The source contact line is formed in the source region of the semiconductor substrate. The source contact line intersects the active regions and is continuously line-shaped. The source contact line includes source contacts formed at locations where the source contact line and the active regions intersect. The source contacts are zigzag-shaped and are separated from corresponding drain contacts by a given distance.
    Type: Application
    Filed: December 29, 2009
    Publication date: February 3, 2011
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Mi Hye KIM, Dong Sook CHANG
  • Publication number: 20100316940
    Abstract: Disclosed is a photomask for forming a contact hole arranged on a wafer in a zigzag form along a transverse direction, including: a light transmitting substrate; a main pattern disposed on the light transmitting substrate with a zigzag form as an upper main pattern disposed in a relatively upper portion and a lower main pattern disposed in a relatively lower portion are arranged alternately along a transverse direction; a first lower auxiliary pattern extending in a vertical direction and disposed adjacently to a lower portion of the upper main pattern; a first upper auxiliary pattern extending in a vertical direction and disposed adjacently to an upper portion of the lower main pattern; a second lower auxiliary pattern extending in the transverse direction and connecting the first lower auxiliary patterns with each other; and a second upper auxiliary pattern extending in the transverse direction and connecting the first upper auxiliary patterns with each other.
    Type: Application
    Filed: December 14, 2009
    Publication date: December 16, 2010
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Hyun Jo Yang, Dong Sook Chang
  • Publication number: 20090026584
    Abstract: A method for manufacturing a semiconductor device which includes fine patterns having various critical dimensions (CDs) by adjusting a thickness of spacer used as an etching mask in Spacer Patterning Technology (SPT). The method for manufacturing a semiconductor device includes forming spacers at a different level over an etching target layer and etching the etching target layer exposed among the spacers.
    Type: Application
    Filed: June 5, 2008
    Publication date: January 29, 2009
    Inventors: Dong Sook Chang, Hyoung Soon Yune
  • Publication number: 20090002657
    Abstract: An exposure apparatus of a semiconductor device may include an exposure light source; an asymmetric adjustment filter for asymmetrically adjusting intensity of a light which passes through the exposure light source; a photomask for passing the light of which intensity is adjusted by the asymmetric adjustment filter; a projection lens for projecting the light passing through the photomask; and a wafer stage for mounting a wafer on which an image is formed by the light from the projection lens.
    Type: Application
    Filed: December 13, 2007
    Publication date: January 1, 2009
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Byeong Ho Cho, Dong Sook Chang