Patents by Inventor Da-soon Lee

Da-soon Lee 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: 10770542
    Abstract: An isolation structure of a semiconductor, a semiconductor device having the same, and a method for fabricating the isolation structure are provided. An isolation structure of a semiconductor device may include a trench formed in a substrate, an oxide layer formed on a bottom surface and an inner sidewall of the trench, a filler formed on the oxide layer to fill a part of inside of the trench, and a fourth oxide layer filling an upper portion of the filler of the trench to a height above an upper surface of the trench, an undercut structure being formed on a boundary area between the inner sidewall and the oxide layer.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: September 8, 2020
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Hyung-suk Choi, Hyun-tae Jung, Eungryul Park, Da-soon Lee
  • Publication number: 20150303253
    Abstract: An isolation structure of a semiconductor, a semiconductor device having the same, and a method for fabricating the isolation structure are provided. An isolation structure of a semiconductor device may include a trench formed in a substrate, an oxide layer formed on a bottom surface and an inner sidewall of the trench, a filler formed on the oxide layer to fill a part of inside of the trench, and a fourth oxide layer filling an upper portion of the filler of the trench to a height above an upper surface of the trench, an undercut structure being formed on a boundary area between the inner sidewall and the oxide layer.
    Type: Application
    Filed: June 30, 2015
    Publication date: October 22, 2015
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Hyung-suk CHOI, Hyun-tae JUNG, Eungryul PARK, Da-soon LEE
  • Patent number: 9105684
    Abstract: An isolation structure of a semiconductor, a semiconductor device having the same, and a method for fabricating the isolation structure are provided. An isolation structure of a semiconductor device may include a trench formed in a substrate, an oxide layer formed on a bottom surface and an inner sidewall of the trench, a filler formed on the oxide layer to fill a part of inside of the trench, and a fourth oxide layer filling an upper portion of the filler of the trench to a height above an upper surface of the trench, an undercut structure being formed on a boundary area between the inner sidewall and the oxide layer.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: August 11, 2015
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Hyung-suk Choi, Hyun-tae Jung, Eung-ryul Park, Da-soon Lee
  • Publication number: 20130075857
    Abstract: An isolation structure of a semiconductor, a semiconductor device having the same, and a method for fabricating the isolation structure are provided. An isolation structure of a semiconductor device may include a trench formed in a substrate, an oxide layer formed on a bottom surface and an inner sidewall of the trench, a filler formed on the oxide layer to fill a part of inside of the trench, and a fourth oxide layer filling an upper portion of the filler of the trench to a height above an upper surface of the trench, an undercut structure being formed on a boundary area between the inner sidewall and the oxide layer.
    Type: Application
    Filed: May 7, 2012
    Publication date: March 28, 2013
    Inventors: Hyung-suk CHOI, Hyun-tae Jung, Eung-ryul Park, Da-soon Lee
  • Patent number: 7989874
    Abstract: The present invention discloses a nonvolatile memory device which can improve the data storage capacity without increasing the surface area of the device, and a method for manufacturing the same. The nonvolatile memory device comprises: a gate of a stack type structure formed on an active region of a semiconductor substrate; a source/drain formed in the substrate at both sides of the gate of the stack type structure; an interlayer insulating film formed on the substrate where the source/drain is formed and covering the gate of the stack type structure; a contact connected to the source/drain through the interlayer insulating film; a plurality of conductive patterns formed in the interlayer insulating film of the region not adjacent to the contact; and an electrode pad formed on the conductive patterns.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: August 2, 2011
    Assignee: Magnachip Semiconductor, Ltd.
    Inventor: Da-Soon Lee
  • Patent number: 7118962
    Abstract: The present invention discloses a nonvolatile memory device which can improve the data storage capacity without increasing the surface area of the device, and a method for manufacturing the same. The nonvolatile memory device comprises: a gate of a stack type structure formed on an active region of a semiconductor substrate; a source/drain formed in the substrate at both sides of the gate of the stack type structure; an interlayer insulating film formed on the substrate where the source/drain is formed and covering the gate of the stack type structure; a contact connected to the source/drain through the interlayer insulating film; a plurality of conductive patterns formed in the interlayer insulating film of the region not adjacent to the contact; and an electrode pad formed on the conductive patterns.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: October 10, 2006
    Assignee: Magnachip Semiconductor, Ltd.
    Inventor: Da-soon Lee
  • Publication number: 20060102951
    Abstract: The present invention discloses a nonvolatile memory device which can improve the data storage capacity without increasing the surface area of the device, and a method for manufacturing the same. The nonvolatile memory device comprises: a gate of a stack type structure formed on an active region of a semiconductor substrate; a source/drain formed in the substrate at both sides of the gate of the stack type structure; an interlayer insulating film formed on the substrate where the source/drain is formed and covering the gate of the stack type structure; a contact connected to the source/drain through the interlayer insulating film; a plurality of conductive patterns formed in the interlayer insulating film of the region not adjacent to the contact; and an electrode pad formed on the conductive patterns.
    Type: Application
    Filed: January 10, 2006
    Publication date: May 18, 2006
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Da-Soon Lee
  • Publication number: 20050093056
    Abstract: The present invention discloses a nonvolatile memory device which can improve the data storage capacity without increasing the surface area of the device, and a method for manufacturing the same. The nonvolatile memory device comprises: a gate of a stack type structure formed on an active region of a semiconductor substrate; a source/drain formed in the substrate at both sides of the gate of the stack type structure; an interlayer insulating film formed on the substrate where the source/drain is formed and covering the gate of the stack type structure; a contact connected to the source/drain through the interlayer insulating film; a plurality of conductive patterns formed in the interlayer insulating film of the region not adjacent to the contact; and an electrode pad formed on the conductive patterns.
    Type: Application
    Filed: November 4, 2004
    Publication date: May 5, 2005
    Applicant: Magnachip Semiconductor, Ltd.
    Inventor: Da-soon Lee
  • Publication number: 20050020012
    Abstract: The present invention discloses a method for manufacturing a nonvolatile memory transistor capable of minimizing the area when adapted to the technology of sub-micron.
    Type: Application
    Filed: April 19, 2004
    Publication date: January 27, 2005
    Inventor: Da-soon Lee
  • Patent number: 6846713
    Abstract: The present invention discloses a method for manufacturing a nonvolatile memory transistor capable of minimizing the area when adapted to the technology of sub-micron.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: January 25, 2005
    Assignee: Hynix Semiconductor Inc.
    Inventor: Da-soon Lee