Patents by Inventor Woong-Jae Chung

Woong-Jae Chung 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: 9817392
    Abstract: Several embodiments of photolithography systems and associated methods of overlay error correction are disclosed herein. In one embodiment, a method for correcting overlay errors in a photolithography system includes measuring a plurality of first overlay errors that individually correspond to a microelectronic substrate in a first batch of microelectronic substrates. The method also includes determining a relationship between the first overlay errors and a first sequence of the microelectronic substrates in the first batch. The method further includes correcting a second overlay error of individual microelectronic substrates in a second batch based on a second sequence of the microelectronic substrates in the second batch and the determined relationship.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: November 14, 2017
    Assignee: Micron Technology, Inc.
    Inventor: Woong Jae Chung
  • Publication number: 20160077521
    Abstract: Several embodiments of photolithography systems and associated methods of overlay error correction are disclosed herein. In one embodiment, a method for correcting overlay errors in a photolithography system includes measuring a plurality of first overlay errors that individually correspond to a microelectronic substrate in a first batch of microelectronic substrates. The method also includes determining a relationship between the first overlay errors and a first sequence of the microelectronic substrates in the first batch. The method further includes correcting a second overlay error of individual microelectronic substrates in a second batch based on a second sequence of the microelectronic substrates in the second batch and the determined relationship.
    Type: Application
    Filed: November 19, 2015
    Publication date: March 17, 2016
    Inventor: Woong Jae Chung
  • Patent number: 9195149
    Abstract: Several embodiments of photolithography systems and associated methods of overlay error correction are disclosed herein. In one embodiment, a method for correcting overlay errors in a photolithography system includes measuring a plurality of first overlay errors that individually correspond to a microelectronic substrate in a first batch of microelectronic substrates. The method also includes determining a relationship between the first overlay errors and a first sequence of the microelectronic substrates in the first batch. The method further includes correcting a second overlay error of individual microelectronic substrates in a second batch based on a second sequence of the microelectronic substrates in the second batch and the determined relationship.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: November 24, 2015
    Assignee: Micron Technology, Inc.
    Inventor: Woong Jae Chung
  • Patent number: 9052604
    Abstract: Several embodiments of photolithography systems and associated methods of alignment correction are disclosed herein. In one embodiment, a method for correcting alignment errors in a photolithography system includes detecting a first alignment error at a first location of a first microelectronic substrate and a second alignment error at a second location of a second microelectronic substrate. The second location generally corresponds to the first location. The method also includes deriving a statistical dispersion between the first alignment error and the second alignment error and associating the first and second locations with an alignment procedure based on the derived statistical dispersion.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: June 9, 2015
    Assignee: Micron Technology, Inc.
    Inventor: Woong Jae Chung
  • Publication number: 20120320349
    Abstract: Several embodiments of photolithography systems and associated methods of overlay error correction are disclosed herein. In one embodiment, a method for correcting overlay errors in a photolithography system includes measuring a plurality of first overlay errors that individually correspond to a microelectronic substrate in a first batch of microelectronic substrates. The method also includes determining a relationship between the first overlay errors and a first sequence of the microelectronic substrates in the first batch. The method further includes correcting a second overlay error of individual microelectronic substrates in a second batch based on a second sequence of the microelectronic substrates in the second batch and the determined relationship.
    Type: Application
    Filed: August 29, 2012
    Publication date: December 20, 2012
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Woong Jae Chung
  • Patent number: 8313877
    Abstract: A photolithography monitoring mark on a substrate includes a plurality of sets of lines. Individual of the sets include a plurality of substantially parallel lines comprising different widths arrayed laterally outward in opposing lateral directions from an axial center of the set. The different widths decrease in each of the opposing lateral directions laterally outward from the axial center of the set. Other implementations are disclosed.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: November 20, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Woong Jae Chung
  • Patent number: 8260449
    Abstract: Several embodiments of photolithography systems and associated methods of overlay error correction are disclosed herein. In one embodiment, a method for correcting overlay errors in a photolithography system includes measuring a plurality of first overlay errors that individually correspond to a microelectronic substrate in a first batch of microelectronic substrates. The method also includes determining a relationship between the first overlay errors and a first sequence of the microelectronic substrates in the first batch. The method further includes correcting a second overlay error of individual microelectronic substrates in a second batch based on a second sequence of the microelectronic substrates in the second batch and the determined relationship.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: September 4, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Woong Jae Chung
  • Patent number: 8203695
    Abstract: Several embodiments of photolithography systems and associated methods of focus correction are disclosed herein. In one embodiment, a method for characterizing focus errors in a photolithography system includes placing a microelectronic substrate onto a substrate support of the photolithography system. The microelectronic substrate is divided into a plurality of fields individually partitioned into a plurality of regions. The method also includes developing a raw focus error map that has a focus error corresponding to the individual regions of the plurality of fields and deriving at least one of an inter-field focus error map and an intra-field focus error map based on the raw focus error map. The inter-field focus error map has an inter-field focus error corresponding to the individual fields, and the intra-field focus error map has an intra-field focus error corresponding to the individual regions.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: June 19, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Woong Jae Chung
  • Publication number: 20100316939
    Abstract: A photolithography monitoring mark on a substrate includes a plurality of sets of lines. Individual of the sets include a plurality of substantially parallel lines comprising different widths arrayed laterally outward in opposing lateral directions from an axial center of the set. The different widths decrease in each of the opposing lateral directions laterally outward from the axial center of the set. Other implementations are disclosed.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 16, 2010
    Inventor: Woong Jae Chung
  • Publication number: 20100114522
    Abstract: Several embodiments of photolithography systems and associated methods of alignment correction are disclosed herein. In one embodiment, a method for correcting alignment errors in a photolithography system includes detecting a first alignment error at a first location of a first microelectronic substrate and a second alignment error at a second location of a second microelectronic substrate. The second location generally corresponds to the first location. The method also includes deriving a statistical dispersion between the first alignment error and the second alignment error and associating the first and second locations with an alignment procedure based on the derived statistical dispersion.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Woong Jae Chung
  • Publication number: 20100110401
    Abstract: Several embodiments of photolithography systems and associated methods of focus correction are disclosed herein. In one embodiment, a method for characterizing focus errors in a photolithography system includes placing a microelectronic substrate onto a substrate support of the photolithography system. The microelectronic substrate is divided into a plurality of fields individually partitioned into a plurality of regions. The method also includes developing a raw focus error map that has a focus error corresponding to the individual regions of the plurality of fields and deriving at least one of an inter-field focus error map and an intra-field focus error map based on the raw focus error map. The inter-field focus error map has an inter-field focus error corresponding to the individual fields, and the intra-field focus error map has an intra-field focus error corresponding to the individual regions.
    Type: Application
    Filed: November 3, 2008
    Publication date: May 6, 2010
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Woong Jae Chung
  • Publication number: 20100112467
    Abstract: Several embodiments of photolithography systems and associated methods of overlay error correction are disclosed herein. In one embodiment, a method for correcting overlay errors in a photolithography system includes measuring a plurality of first overlay errors that individually correspond to a microelectronic substrate in a first batch of microelectronic substrates. The method also includes determining a relationship between the first overlay errors and a first sequence of the microelectronic substrates in the first batch. The method further includes correcting a second overlay error of individual microelectronic substrates in a second batch based on a second sequence of the microelectronic substrates in the second batch and the determined relationship.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Woong Jae Chung
  • Patent number: 7557444
    Abstract: A via structure is disclosed for use in a multi-layered semiconductor device, for forming electrical contacts between prescribed layers of the vertically aligned structures. The via structures include a plurality of adjacent frame shaped hole structures which extend between the prescribed layers of the device, and which are filled with metal to form frame shaped vias. The width of each of the sides of the frame is chosen to be equal to an integer multiple of half of the minimum pitch of the semiconductor processing, with the distance between adjacent frame shaped via structures being approximately equal to an integer multiple of half of the minimum pitch of the semiconductor processing.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: July 7, 2009
    Assignee: Infineon Technologies AG
    Inventors: Achim Gratz, Jakob Kriz, Woong-Jae Chung
  • Publication number: 20080067688
    Abstract: A via structure is disclosed for use in a multi-layered semiconductor device, for forming electrical contacts between prescribed layers of the vertically aligned structures. The via structures include a plurality of adjacent frame shaped hole structures which extend between the prescribed layers of the device, and which are filled with metal to form frame shaped vias. The width of each of the sides of the frame is chosen to be equal to an integer multiple of half of the minimum pitch of the semiconductor processing, with the distance between adjacent frame shaped via structures being approximately equal to an integer multiple of half of the minimum pitch of the semiconductor processing.
    Type: Application
    Filed: September 20, 2006
    Publication date: March 20, 2008
    Inventors: Achim Gratz, Jakob Kriz, Woong-Jae Chung