Patents by Inventor Byoung Kwon Ahn

Byoung Kwon Ahn 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: 6893913
    Abstract: Disclosed is a method for forming a capacitor of a semiconductor device. The forming method comprises the step of forming an interlayer insulating film on a semiconductor substrate formed with a bit line. A contact plug to be in contact with the substrate is formed within the interlayer insulating film. A storage electrode is formed on the interlayer insulating film in such a manner that the storage electrode comes in contact with the contact plug. A dielectric film composed of a single composite film of Ta2O5(X)Y2O3(1?X) is also formed on the storage electrode according to ALD (Atomic Layer Deposition) technology. A diffusion barrier film is deposited on the dielectric film, and a plate electrode is formed on the diffusion barrier film. The present invention can provide a capacitor having sufficient capacitance necessary for a stable device operation by applying the Ta2O5(X)Y2O3(1?X) single composite film to the dielectric film.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: May 17, 2005
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byoung Kwon Ahn, Sung Hoon Park
  • Patent number: 6815225
    Abstract: In the method for forming a capacitor of a nonvolatile semiconductor memory device, a TaON glue layer is formed over a semiconductor substrate, and a lower electrode is formed on the TaON glue layer. A ferroelectric film is then formed on the lower electrode, and an upper electrode is formed on the ferroelectric film.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: November 9, 2004
    Assignee: Hynix Semiconductor Inc.
    Inventors: Nam Kyeong Kim, Ki Seon Park, Dong Su Park, Byoung Kwon Ahn, Seung Kyu Han
  • Patent number: 6762090
    Abstract: A method for fabricating capacitor capable of simplifying formation processes of ruthenium (Ru) layer for storage node electrode formation of capacitor comprises the steps of: forming a first insulating layer having a first opening exposing a predetermined region on a substrate; forming a conductive plug filled within the first opening; forming a second insulating layer having a second opening exposing the conductive plug on the first insulating layer; forming a conductive layer covering the second opening by sequentially performing PECVD and LPCVD processes on the second insulating layer; exposing the second insulating layer by performing etch back on the conductive layer; forming a storage node electrode of the capacitor by removing the second insulating layer; and forming a dielectric layer to cover the storage node electrode; and forming a plate electrode. In an alternative embodiment, a thermal treatment under an N2 gas supply is performed after the step of forming the conductive layer.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: July 13, 2004
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byoung Kwon Ahn, Sung Hoon Park, Joon Ho Kim
  • Publication number: 20040115880
    Abstract: Disclosed is a method for forming a capacitor of a semiconductor device. The forming method comprises the step of forming an interlayer insulating film on a semiconductor substrate formed with a bit line. A contact plug to be in contact with the substrate is formed within the interlayer insulating film. A storage electrode is formed on the interlayer insulating film in such a manner that the storage electrode comes in contact with the contact plug. A dielectric film composed of a single composite film of Ta2O5(X)Y2O3(1-X) is also formed on the storage electrode according to ALD (Atomic Layer Deposition) technology. A diffusion barrier film is deposited on the dielectric film, and a plate electrode is formed on the diffusion barrier film. The present invention can provide a capacitor having sufficient capacitance necessary for a stable device operation by applying the Ta2O5(X)Y2O3(1-X) single composite film to the dielectric film.
    Type: Application
    Filed: June 25, 2003
    Publication date: June 17, 2004
    Inventors: Byoung Kwon Ahn, Sung Hoon Park
  • Patent number: 6680228
    Abstract: In the capacitor in a semiconductor device, a nitride film is formed over a lower electrode on a semiconductor substrate, and a TaON film is formed over the nitride film. The Al2O3 film is formed over the TaON film, and an upper electrode is formed over the Al2O3 film.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: January 20, 2004
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byoung Kwon Ahn, Dong Soo Park
  • Patent number: 6656788
    Abstract: A capacitor for a semiconductor device is manufactured by forming a lower structure on a semiconductor device, forming a lower electrode on the lower structure of the semiconductor device, forming a dielectric thin film by depositing an amorphous TaON film on the surface of the lower electrode, and supplying a Ta source gas in a mono-pulse manner and continuously supplying a reaction gas even when the Ta source gas is not supplied, and forming an upper electrode on the upper portion of the dielectric thin film.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: December 2, 2003
    Assignee: Hyundai Electronic Industries Co., Ltd.
    Inventors: Dong Su Park, Byoung Kwon Ahn
  • Patent number: 6653198
    Abstract: A capacitor in a semiconductor device and fabricating method therefor are disclosed, in which the capacitor in a semiconductor device comprises: a semiconductor substrate, a first Ru film formed on the semiconductor substrate, a Y2O3 film formed on the first Ru film, a TiON film formed on the Y2O3 film, and a second Ru film formed on the TiON film; and the method for fabricating a capacitor in a semiconductor device comprising the steps of: providing a semiconductor substrate, forming a first Ru film on the semiconductor substrate, forming a Y2O3 film on the first Ru film, forming a TiON film on the Y2O3 film, and forming a second Ru film on the TiON film.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: November 25, 2003
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byoung Kwon Ahn, Joon Ho Kim
  • Publication number: 20030205744
    Abstract: In the method for forming a capacitor of a nonvolatile semiconductor memory device, a TaON glue layer is formed over a semiconductor substrate, and a lower electrode is formed on the TaON glue layer. A ferroelectric film is then formed on the lower electrode, and an upper electrode is formed on the ferroelectric film.
    Type: Application
    Filed: June 3, 2003
    Publication date: November 6, 2003
    Applicant: Hynix Semiconductor, Inc.
    Inventors: Nam Kyeong Kim, Ki Seon Park, Dong Su Park, Byoung Kwon Ahn, Seung Kyu Han
  • Patent number: 6597029
    Abstract: In the method for forming a capacitor of a nonvolatile semiconductor memory device, a TaON glue layer is formed over a semiconductor substrate, and a lower electrode is formed on the TaON glue layer. A ferroelectric film is then formed on the lower electrode, and an upper electrode is formed on the ferroelectric film.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: July 22, 2003
    Assignee: Hynix Semiconductor Inc.
    Inventors: Nam Kyeong Kim, Ki Seon Park, Dong Su Park, Byoung Kwon Ahn, Seung Kyu Han
  • Publication number: 20030124812
    Abstract: A capacitor in a semiconductor device and fabricating method therefor are disclosed, in which the capacitor in a semiconductor device comprises: a semiconductor substrate, a first Ru film formed on the semiconductor substrate, a Y2O3 film formed on the first Ru film, a TiON film formed on the Y2O3 film, and a second Ru film formed on the TiON film; and the method for fabricating a capacitor in a semiconductor device comprising the steps of: providing a semiconductor substrate, forming a first Ru film on the semiconductor substrate, forming a Y2O3 film on the first Ru film, forming a TiON film on the Y2O3 film, and forming a second Ru film on the TiON film.
    Type: Application
    Filed: December 27, 2002
    Publication date: July 3, 2003
    Inventors: Byoung Kwon Ahn, Joon Ho Kim
  • Patent number: 6573547
    Abstract: A method for forming a cell capacitor used for a high-integrated DRAM is disclosed which guarantees interfacial properties of aluminum oxide and excellent leakage current preventive properties by depositing an aluminum oxide layer and a mixed layer of TiON and TiO2 as dielectric layers on a semiconductor substrate having a predetermined lower substructure by an atomic layer deposition (ALD) method and thus forming a double layer structure, and simultaneously providing a high capacitance by using a high dielectric property of a mixed layer of TiON and TiO2.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: June 3, 2003
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byoung-kwon Ahn, Sung-hun Park
  • Publication number: 20030049908
    Abstract: A method for fabricating capacitor capable of simplifying formation processes of ruthenium (Ru) layer for storage node electrode formation of capacitor comprises the steps of: forming a first insulating layer having a first opening exposing a predetermined region on a substrate; forming a conductive plug filled within the first opening; forming a second insulating layer having a second opening exposing the conductive plug on the first insulating layer; forming a conductive layer covering the second opening by sequentially performing PECVD and LPCVD processes on the second insulating layer; exposing the second insulating layer by performing etch back on the conductive layer; forming a storage node electrode of the capacitor by removing the second insulating layer; and forming a dielectric layer to cover the storage node electrode; and forming a plate electrode. In an alternative embodiment, a thermal treatment under an N2 gas supply is performed after the step of forming the conductive layer.
    Type: Application
    Filed: February 5, 2002
    Publication date: March 13, 2003
    Inventors: Byoung Kwon Ahn, Sung Hoon Park, Joon Ho Kim
  • Publication number: 20030039091
    Abstract: In the capacitor in a semiconductor device, a nitride film is formed over a lower electrode on a semiconductor substrate, and a TaON film is formed over the nitride film. The Al2O3 film is formed over the TaON film, and an upper electrode is formed over the Al2O3 film.
    Type: Application
    Filed: October 11, 2002
    Publication date: February 27, 2003
    Applicant: Hynix Semiconductor Inc.
    Inventors: Byoung Kwon Ahn, Dong Soo Park
  • Patent number: 6479345
    Abstract: In the method for manufacturing a capacitor in a semiconductor device, a nitride film is formed over a lower electrode on a semiconductor substrate, and a TaON film is formed over the nitride film. The Al2O3 film is formed over the TaON film, and an upper electrode is formed over the Al2O3 film.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: November 12, 2002
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byoung Kwon Ahn, Dong Soo Park
  • Publication number: 20020094624
    Abstract: A method for forming a cell capacitor used for a high-integrated DRAM is disclosed which guarantees interfacial properties of aluminum oxide and excellent leakage current preventive properties by depositing an aluminum oxide layer and a mixed layer of TiON and TiO2 as dielectric layers on a semiconductor substrate having a predetermined lower substructure by an atomic layer deposition (ALD) method and thus forming a double layer structure, and simultaneously providing a high capacitance by using a high dielectric property of a mixed layer of TiON and TiO2.
    Type: Application
    Filed: December 12, 2001
    Publication date: July 18, 2002
    Inventors: Byoung-kwon Ahn, Sung-hun Park
  • Publication number: 20020000587
    Abstract: In the method for forming a capacitor of a nonvolatile semiconductor memory device, a TaON glue layer is formed over a semiconductor substrate, and a lower electrode is formed on the TaON glue layer. A ferroelectric film is then formed on the lower electrode, and an upper electrode is formed on the ferroelectric film.
    Type: Application
    Filed: June 14, 2001
    Publication date: January 3, 2002
    Inventors: Nam Kyeong Kim, Ki Seon Park, Dong Su Park, Byoung Kwon Ahn, Seung Kyu Han
  • Publication number: 20020001164
    Abstract: In the method for manufacturing a capacitor in a semiconductor device, a nitride film is formed over a lower electrode on a semiconductor substrate, and a TaON film is formed over the nitride film. The Al2O3 film is formed over the TaON film, and an upper electrode is formed over the Al2O3 film.
    Type: Application
    Filed: June 14, 2001
    Publication date: January 3, 2002
    Inventors: Byoung Kwon Ahn, Dong Soo Park
  • Publication number: 20010014510
    Abstract: A capacitor for a semiconductor device is manufactured by forming a lower structure on a semiconductor device, forming a lower electrode on the lower structure of the semiconductor device, forming a dielectric thin film by depositing an amorphous TaON film on the surface of the lower electrode, and supplying a Ta source gas in a mono-pulse manner and continuously supplying a reaction gas even when the Ta source gas is not supplied, and forming an upper electrode on the upper portion of the dielectric thin film.
    Type: Application
    Filed: January 2, 2001
    Publication date: August 16, 2001
    Inventors: Dong Su Park, Byoung Kwon Ahn