Patents by Inventor Woongsik Nam

Woongsik Nam 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).

  • Publication number: 20230352526
    Abstract: A semiconductor device includes first and second active patterns on a substrate, the first and second active patterns adjacent to each other in a first direction with a first trench between the first and second active patterns, third and fourth active patterns on the substrate, the third and fourth active patterns adjacent to each other in the first direction with a second trench between the third and fourth active patterns. The semiconductor device includes a first device isolation layer in the first trench, and a second device isolation layer in the second trench. A width of the second trench in the first direction is greater than a width of the first trench in the first direction. The second device isolation layer includes a first protrusion and a second protrusion which protrude from a top surface of the second device isolation layer.
    Type: Application
    Filed: July 11, 2023
    Publication date: November 2, 2023
    Inventors: GYUHWAN AHN, SUNG SOO KIM, CHAEHO NA, WOONGSIK NAM, DONGHYUN ROH
  • Patent number: 11735626
    Abstract: A semiconductor device includes first and second active patterns on a substrate, the first and second active patterns adjacent to each other in a first direction with a first trench between the first and second active patterns, third and fourth active patterns on the substrate, the third and fourth active patterns adjacent to each other in the first direction with a second trench between the third and fourth active patterns. The semiconductor device includes a first device isolation layer in the first trench, and a second device isolation layer in the second trench. A width of the second trench in the first direction is greater than a width of the first trench in the first direction. The second device isolation layer includes a first protrusion and a second protrusion which protrude from a top surface of the second device isolation layer.
    Type: Grant
    Filed: February 9, 2022
    Date of Patent: August 22, 2023
    Inventors: Gyuhwan Ahn, Sung Soo Kim, Chaeho Na, Woongsik Nam, Donghyun Roh
  • Publication number: 20220173212
    Abstract: A semiconductor device includes first and second active patterns on a substrate, the first and second active patterns adjacent to each other in a first direction with a first trench between the first and second active patterns, third and fourth active patterns on the substrate, the third and fourth active patterns adjacent to each other in the first direction with a second trench between the third and fourth active patterns. The semiconductor device includes a first device isolation layer in the first trench, and a second device isolation layer in the second trench. A width of the second trench in the first direction is greater than a width of the first trench in the first direction. The second device isolation layer includes a first protrusion and a second protrusion which protrude from a top surface of the second device isolation layer.
    Type: Application
    Filed: February 9, 2022
    Publication date: June 2, 2022
    Inventors: GYUHWAN AHN, SUNG SOO KIM, CHAEHO NA, WOONGSIK NAM, DONGHYUN ROH
  • Patent number: 11282921
    Abstract: A semiconductor device includes first and second active patterns on a substrate, the first and second active patterns adjacent to each other in a first direction with a first trench between the first and second active patterns, third and fourth active patterns on the substrate, the third and fourth active patterns adjacent to each other in the first direction with a second trench between the third and fourth active patterns. The semiconductor device includes a first device isolation layer in the first trench, and a second device isolation layer in the second trench. A width of the second trench in the first direction is greater than a width of the first trench in the first direction. The second device isolation layer includes a first protrusion and a second protrusion which protrude from a top surface of the second device isolation layer.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: March 22, 2022
    Inventors: Gyuhwan Ahn, Sung Soo Kim, Chaeho Na, Woongsik Nam, Donghyun Roh
  • Publication number: 20210118991
    Abstract: A semiconductor device includes first and second active patterns on a substrate, the first and second active patterns adjacent to each other in a first direction with a first trench between the first and second active patterns, third and fourth active patterns on the substrate, the third and fourth active patterns adjacent to each other in the first direction with a second trench between the third and fourth active patterns. The semiconductor device includes a first device isolation layer in the first trench, and a second device isolation layer in the second trench. A width of the second trench in the first direction is greater than a width of the first trench in the first direction. The second device isolation layer includes a first protrusion and a second protrusion which protrude from a top surface of the second device isolation layer.
    Type: Application
    Filed: June 16, 2020
    Publication date: April 22, 2021
    Inventors: GYUHWAN AHN, SUNG SOO KIM, CHAEHO NA, WOONGSIK NAM, DONGHYUN ROH
  • Patent number: 9222190
    Abstract: The present invention provides a 3-dimensional nanoparticle structure, wherein a plurality of structures formed by assembling nanoparticles is connected to form a bridge, and a gas sensor using the same.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: December 29, 2015
    Assignees: SNU R&DB Foundation, Global Frontier Center for Multiscale Energy Systems
    Inventors: Woongsik Nam, Yongjun Bae, Man Soo Choi
  • Publication number: 20140193325
    Abstract: The present invention provides a 3-dimensional nanoparticle structure, wherein a plurality of structures formed by assembling nanoparticles is connected to form a bridge, and a gas sensor using the same.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 10, 2014
    Inventors: Woongsik Nam, Yongjun Bae, Man Soo Choi