Patents by Inventor Yuko Ono

Yuko Ono 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: 20080284989
    Abstract: In a developing method for performing developing treatment of a substrate by supplying a developing solution onto a resist film formed on a surface of the substrate, the present invention controls a zeta potential of the surface of the substrate at a predetermined potential in the same polarity as that of a zeta potential of insoluble substances floating in the developing solution, thereby preventing or reducing the adhesion of the insoluble substances to the resist film and the substrate. This remedies the occurrence of development defects. The adhesion of the insoluble substances to the resist film and the substrate can also be prevented or inhibited by supplying an acid liquid to a liquid on the substrate, or controlling a pH value of the liquid on the substrate to control an absolute value of the zeta potential of the insoluble substances.
    Type: Application
    Filed: July 10, 2008
    Publication date: November 20, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yuko Ono, Junichi Kitano
  • Patent number: 7427168
    Abstract: In a developing method for performing developing treatment of a substrate by supplying a developing solution onto a resist film formed on a surface of the substrate, the present invention controls a zeta potential of the surface of the substrate at a predetermined potential in the same polarity as that of a zeta potential of insoluble substances floating in the developing solution, thereby preventing or reducing the adhesion of the insoluble substances to the resist film and the substrate. This remedies the occurrence of development defects. The adhesion of the insoluble substances to the resist film and the substrate can also be prevented or inhibited by supplying an acid liquid to a liquid on the substrate, or controlling a pH value of the liquid on the substrate to control an absolute value of the zeta potential of the insoluble substances.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: September 23, 2008
    Assignee: Tokyo Electron Limited
    Inventors: Yuko Ono, Junichi Kitano
  • Publication number: 20080079917
    Abstract: In a developing method for performing developing treatment of a substrate by supplying a developing solution onto a resist film formed on a surface of the substrate, the present invention controls a zeta potential of the surface of the substrate at a predetermined potential in the same polarity as that of a zeta potential of insoluble substances floating in the developing solution, thereby preventing or reducing the adhesion of the insoluble substances to the resist film and the substrate. This remedies the occurrence of development defects. The adhesion of the insoluble substances to the resist film and the substrate can also be prevented or inhibited by supplying an acid liquid to a liquid on the substrate, or controlling a pH value of the liquid on the substrate to control an absolute value of the zeta potential of the insoluble substances.
    Type: Application
    Filed: September 14, 2007
    Publication date: April 3, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yuko Ono, Junichi Kitano
  • Publication number: 20080013946
    Abstract: In a developing method for performing developing treatment of a substrate by supplying a developing solution onto a resist film formed on a surface of the substrate, the present invention controls a zeta potential of the surface of the substrate at a predetermined potential in the same polarity as that of a zeta potential of insoluble substances floating in the developing solution, thereby preventing or reducing the adhesion of the insoluble substances to the resist film and the substrate. This remedies the occurrence of development defects. The adhesion of the insoluble substances to the resist film and the substrate can also be prevented or inhibited by supplying an acid liquid to a liquid on the substrate, or controlling a pH value of the liquid on the substrate to control an absolute value of the zeta potential of the insoluble substances.
    Type: Application
    Filed: September 14, 2007
    Publication date: January 17, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yuko Ono, Junichi Kitano
  • Publication number: 20060219171
    Abstract: In a substrate processing apparatus comprising a processing unit where a specific type of processing is executed on a wafer and a transfer chamber through which a wafer is carried into/out of the processing unit, the transfer chamber includes an air intake unit through which external air is drawn into the transfer chamber, a discharge unit disposed so as to face opposite the air intake unit, through which the discharge gas in the transfer chamber is discharged and a discharge gas filtering means disposed at the discharge unit and constituted with a harmful constituent eliminating filter through which a harmful constituent contained in the discharge gas, at least, is eliminated.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 5, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yoshiaki Sasaki, Yusuke Muraki, Eiichi Nishimura, Yuko Ono
  • Publication number: 20050266359
    Abstract: In a developing method for performing developing treatment of a substrate by supplying a developing solution onto a resist film formed on a surface of the substrate, the present invention controls a zeta potential of the surface of the substrate at a predetermined potential in the same polarity as that of a zeta potential of insoluble substances floating in the developing solution, thereby preventing or reducing the adhesion of the insoluble substances to the resist film and the substrate. This remedies the occurrence of development defects. The adhesion of the insoluble substances to the resist film and the substrate can also be prevented or inhibited by supplying an acid liquid to a liquid on the substrate, or controlling a pH value of the liquid on the substrate to control an absolute value of the zeta potential of the insoluble substances.
    Type: Application
    Filed: July 15, 2005
    Publication date: December 1, 2005
    Applicant: Tokyo Electron Limited
    Inventors: Yuko Ono, Junichi Kitano
  • Patent number: 6955485
    Abstract: In a developing method for performing developing treatment of a substrate by supplying a developing solution onto a resist film formed on a surface of the substrate, the present invention controls a zeta potential of the surface of the substrate at a predetermined potential in the same polarity as that of a zeta potential of insoluble substances floating in the developing solution, thereby preventing or reducing the adhesion of the insoluble substances to the resist film and the substrate. This remedies the occurrence of development defects. The adhesion of the insoluble substances to the resist film and the substrate can also be prevented or inhibited by supplying an acid liquid to a liquid on the substrate, or controlling a pH value of the liquid on the substrate to control an absolute value of the zeta potential of the insoluble substances.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: October 18, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Yuko Ono, Junichi Kitano
  • Patent number: 6617095
    Abstract: A HMDS gas is supplied to a surface of a wafer W to perform a hydrophobic process, thereafter the wafer W is contained in an airtight container on a cassette stage, and is transferred to an analyzer provided at an external portion of a resist pattern forming apparatus. The analyzer performs mass spectrometry of the quantity of an ionic species such as CH9Si+, C3H9Si+, C3H9Osi− and the like on the surface of the wafer W using an analyzing section, for example, TOF-SIMS, whereby measuring a HMDS quantity (hexamethyldisilazane) on the surface of the wafer W. This method makes it possible to measure the HMDS quantity on the surface of the wafer W and to evaluate a hydrophobic process state with high reliability.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: September 9, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Junichi Kitano, Keiko Hada, Yuko Ono, Takayuki Katano, Hidefumi Matsui
  • Publication number: 20030165756
    Abstract: In a developing method for performing developing treatment of a substrate by supplying a developing solution onto a resist film formed on a surface of the substrate, the present invention controls a zeta potential of the surface of the substrate at a predetermined potential in the same polarity as that of a zeta potential of insoluble substances floating in the developing solution, thereby preventing or reducing the adhesion of the insoluble substances to the resist film and the substrate. This remedies the occurrence of development defects. The adhesion of the insoluble substances to the resist film and the substrate can also be prevented or inhibited by supplying an acid liquid to a liquid on the substrate, or controlling a pH value of the liquid on the substrate to control an absolute value of the zeta potential of the insoluble substances.
    Type: Application
    Filed: February 26, 2003
    Publication date: September 4, 2003
    Inventors: Yuko Ono, Junichi Kitano
  • Publication number: 20020009592
    Abstract: A HMDS gas is supplied to a surface of a wafer W to perform a hydrophobic process, thereafter the wafer W is contained in an airtight container on a cassette stage, and is transferred to an analyzer provided at an external portion of a resist pattern forming apparatus. The analyzer performs mass spectrometry of the quantity of an ionic species such as CH9Si+, C3H9Si+, C3H9Osi− and the like on the surface of the wafer W using an analyzing section, for example, TOF-SIMS, whereby measuring a HMDS quantity (hexamethyldisilazane) on the surface of the wafer W. This method makes it possible to measure the HMDS quantity on the surface of the wafer W and to evaluate a hydrophobic process state with high reliability.
    Type: Application
    Filed: April 6, 2001
    Publication date: January 24, 2002
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Junichi Kitano, Keiko Hada, Yuko Ono, Takayuki Katano, Hidefumi Matsui