Patents by Inventor Yasuhito Saiga

Yasuhito Saiga 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: 8889337
    Abstract: Such a film forming method is provided that can prevent peeling of surface films including a resist film from a substrate during immersion exposure. The film forming method includes the steps of forming surface films including a resist film and a protective film covering the resist film over a surface of a wafer, and forming an edge cap film by supplying an edge cap film material to at least a boundary portion including a periphery of the wafer and peripheries of the surface films such as the protective film.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: November 18, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Hitoshi Kosugi, Taro Yamamoto, Yoshiaki Yamada, Yasuhito Saiga
  • Patent number: 8702370
    Abstract: A substrate transfer method for transferring target substrates proceeds in a substrate processing system for performing processes including a photolithography sequence on the target substrates. The system includes a first automated substrate transfer line configured to transfer the target substrates among a plurality of process sections for respectively performing processes on the target substrates, and a second automated substrate transfer line of a cyclical type dedicated to a plurality of process apparatuses of a photolithography process section, which are configured to perform a series of processes in the photolithography sequence, the second automated substrate transfer line being located relative to the first automated substrate transfer line so as for the target substrates to be transferred therebetween.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: April 22, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Yuichi Yamamoto, Tadayuki Yamaguchi, Yasuhito Saiga, Yoshiaki Yamada
  • Publication number: 20120251957
    Abstract: A substrate transfer method for transferring target substrates proceeds in a substrate processing system for performing processes including a photolithography sequence on the target substrates. The system includes a first automated substrate transfer line configured to transfer the target substrates among a plurality of process sections for respectively performing processes on the target substrates, and a second automated substrate transfer line of a cyclical type dedicated to a plurality of process apparatuses of a photolithography process section, which are configured to perform a series of processes in the photolithography sequence, the second automated substrate transfer line being located relative to the first automated substrate transfer line so as for the target substrates to be transferred therebetween.
    Type: Application
    Filed: June 13, 2012
    Publication date: October 4, 2012
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yuichi Yamamoto, Tadayuki Yamaguchi, Yasuhito Saiga, Yoshiaki Yamada
  • Patent number: 8236132
    Abstract: A substrate processing system (100) includes a first automated substrate transfer line or main transfer line (20) configured to transfer wafers (W) over the entire system and to transfer wafers to and from respective process sections, and a second automated substrate transfer line or auxiliary transfer line (30) configured to transfer wafers (W) inside a photolithography process section (1a). The auxiliary transfer line (30) is disposed as a transfer mechanism independent of the main transfer line (20). An OHT (31) is configured to travel around on the auxiliary transfer line (30) having a loop shape, so as to transfer wafers (W) to and from and among the respective process apparatuses in the photolithography process section (1a).
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: August 7, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Yuichi Yamamoto, Tadayuki Yamaguchi, Yasuhito Saiga, Yoshiaki Yamada
  • Patent number: 8133663
    Abstract: A pattern forming method includes forming a resist film or sequentially forming a resist film and a protection film in this order on a surface of a substrate; then, performing immersion light exposure that includes immersing the resist film or the resist film and the protection film formed on the substrate in a liquid during light exposure, thereby forming a predetermined light exposure pattern on the resist film; and performing a development process of the light exposure pattern by use of a development liquid, thereby forming a predetermined resist pattern. After the immersion light exposure and before the development process, the method further includes performing a hydrophilic process of turning a surface of the resist film or the protection film serving as a substrate surface into a hydrophilic state to allow the substrate surface to be wetted with the development liquid overall.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: March 13, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Taro Yamamoto, Hitoshi Kosugi, Yoshiaki Yamada, Yasuhito Saiga
  • Patent number: 8007968
    Abstract: In the present invention, patterning for the first time is performed on a film to be worked above the front surface of a substrate, and the actual dimension of the pattern formed by the patterning for the first time is measured. Based on the dimension measurement result of the patterning or the first time, the condition of patterning for the second time is then set. In this event, the condition of the patterning for the second time is set so that a difference between the dimension of the patterning for the first time and its target dimension is equal to a difference between the dimension of the patterning for the second time and its target dimension. Thereafter, the patterning for the second time is performed under the set patterning condition.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: August 30, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Yoshiaki Yamada, Tadayuki Yamaguchi, Yuuichi Yamamoto, Yasuhito Saiga, Kazuo Sawai
  • Patent number: 7901149
    Abstract: A substrate on which a resist film has been formed is transferred to an aligner and subjected to exposure processing. The substrate is then subjected to post-exposure baking in a second processing system. The substrate is then transferred again to the aligner and subjected to exposure processing. The substrate for which exposure processing for the second time has been finished is transferred to a first processing system and again subjected to post-exposure baking. The time periods from the ends of the exposure processing to the starts of the post-exposure baking for the first time and the second time are controlled to be equal. In pattern forming processing in which exposure processing is performed a plurality of times between the resist film forming processing and the developing treatment, a pattern with a desired dimension can be finally formed.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: March 8, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Yoshiaki Yamada, Tadayuki Yamaguchi, Yuuichi Yamamoto, Yasuhito Saiga
  • Patent number: 7826032
    Abstract: A circulation system for a high refractive index liquid includes a first collecting section configured to collect a high refractive index liquid used in an immersion light exposure section; a first supply section configured to supply the high refractive index liquid collected in the first collecting section to a cleaning section as a cleaning liquid; a second collecting section configured to collect the high refractive index liquid used in the cleaning section; and a second supply section configured to supply the high refractive index liquid collected in the second collecting section to the immersion light exposure section, wherein the high refractive index liquid is circulated between the immersion light exposure section and the cleaning section.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: November 2, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Taro Yamamoto, Hitoshi Kosugi, Yoshiaki Yamada, Yasuhito Saiga
  • Patent number: 7651285
    Abstract: An edge exposure apparatus performing an exposure process on an edge portion of a wafer having a coating film (resist film) formed thereon includes position detection means for detecting positional data of an outer edge of a wafer held by a spin chuck, an exposure portion for performing an exposure process on the edge portion of the wafer, a development nozzle supplying a developer to the exposed region, and alignment means for horizontally moving the spin chuck. An exposure process is performed by the exposure portion on the edge portion of the wafer held by the spin chuck while the alignment means is controlled, based on the positional data of the outer edge of the wafer which is detected by the position detection means, such that the positional relation between the outer edge of the wafer and the exposure portion is kept constant.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: January 26, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Hitoshi Kosugi, Taro Yamamoto, Yoshiaki Yamada, Yasuhito Saiga
  • Publication number: 20090258304
    Abstract: In the present invention, patterning for the first time is performed on a film to be worked above the front surface of a substrate, and the actual dimension of the pattern formed by the patterning for the first time is measured. Based on the dimension measurement result of the patterning or the first time, the condition of patterning for the second time is then set. In this event, the condition of the patterning for the second time is set so that a difference between the dimension of the patterning for the first time and its target dimension is equal to a difference between the dimension of the patterning for the second time and its target dimension. Thereafter, the patterning for the second time is performed under the set patterning condition.
    Type: Application
    Filed: July 25, 2007
    Publication date: October 15, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yoshiaki Yamada, Tadayuki Yamaguchi, Yuuichi Yamamoto, Yasuhito Saiga, Kazuo Sawai
  • Publication number: 20090208879
    Abstract: In the present invention, a substrate on which a resist film has been formed is transferred to an aligner and subjected to exposure processing. The substrate is then subjected to post-exposure baking in a second processing system. The substrate is then transferred again to the aligner and subjected to exposure processing. The substrate for which exposure processing for the second time has been finished is transferred to a first processing system and again subjected to post-exposure baking. The time periods from the ends of the exposure processing to the starts of the post-exposure baking for the first time and the second time are controlled to be equal. According to the present invention, in pattern forming processing in which exposure processing is performed a plurality of times between the resist film forming processing and the developing treatment, a pattern with a desired dimension can be finally formed.
    Type: Application
    Filed: July 19, 2007
    Publication date: August 20, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yoshiaki Yamada, Tadayuki Yamaguchi, Yuuichi Yamamoto, Yasuhito Saiga
  • Publication number: 20090185151
    Abstract: A substrate processing system (100) includes a first automated substrate transfer line or main transfer line (20) configured to transfer wafers (W) over the entire system and to transfer wafers to and from respective process sections, and a second automated substrate transfer line or auxiliary transfer line (30) configured to transfer wafers (W) inside a photolithography process section (1a). The auxiliary transfer line (30) is disposed as a transfer mechanism independent of the main transfer line (20). An OHT (31) is configured to travel around on the auxiliary transfer line (30) having a loop shape, so as to transfer wafers (W) to and from and among the respective process apparatuses in the photolithography process section (1a).
    Type: Application
    Filed: June 15, 2007
    Publication date: July 23, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yuichi Yamamoto, Tadayuki Yamaguchi, Yasuhito Saiga, Yoshiaki Yamada
  • Publication number: 20080118861
    Abstract: Such a film forming method is provided that can prevent peeling of surface films including a resist film from a substrate during immersion exposure. The film forming method includes the steps of forming surface films including a resist film and a protective film covering the resist film over a surface of a wafer, and forming an edge cap film by supplying an edge cap film material to at least a boundary portion including a periphery of the wafer and peripheries of the surface films such as the protective film.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 22, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Hitoshi Kosugi, Taro Yamamoto, Yoshiaki Yamada, Yasuhito Saiga
  • Publication number: 20080088809
    Abstract: An edge exposure apparatus performing an exposure process on an edge portion of a wafer having a coating film (resist film) formed thereon includes position detection means for detecting positional data of an outer edge of a wafer held by a spin chuck, an exposure portion for performing an exposure process on the edge portion of the wafer, a development nozzle supplying a developer to the exposed region, and alignment means for horizontally moving the spin chuck. An exposure process is performed by the exposure portion on the edge portion of the wafer held by the spin chuck while the alignment means is controlled, based on the positional data of the outer edge of the wafer which is detected by the position detection means, such that the positional relation between the outer edge of the wafer and the exposure portion is kept constant.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 17, 2008
    Inventors: Hitoshi Kosugi, Taro Yamamoto, Yoshiaki Yamada, Yasuhito Saiga
  • Publication number: 20080038671
    Abstract: A pattern forming method includes forming a resist film or sequentially forming a resist film and a protection film in this order on a surface of a substrate; then, performing immersion light exposure that includes immersing the resist film or the resist film and the protection film formed on the substrate in a liquid during light exposure, thereby forming a predetermined light exposure pattern on the resist film; and performing a development process of the light exposure pattern by use of a development liquid, thereby forming a predetermined resist pattern. After the immersion light exposure and before the development process, the method further includes performing a hydrophilic process of turning a surface of the resist film or the protection film serving as a substrate surface into a hydrophilic state to allow the substrate surface to be wetted with the development liquid overall.
    Type: Application
    Filed: July 24, 2007
    Publication date: February 14, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Taro YAMAMOTO, Hitoshi Kosugi, Yoshiaki Yamada, Yasuhito Saiga
  • Publication number: 20080018868
    Abstract: A circulation system for a high refractive index liquid includes a first collecting section configured to collect a high refractive index liquid used in an immersion light exposure section; a first supply section configured to supply the high refractive index liquid collected in the first collecting section to a cleaning section as a cleaning liquid; a second collecting section configured to collect the high refractive index liquid used in the cleaning section; and a second supply section configured to supply the high refractive index liquid collected in the second collecting section to the immersion light exposure section, wherein the high refractive index liquid is circulated between the immersion light exposure section and the cleaning section.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 24, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Taro YAMAMOTO, Hitoshi KOSUGI, Yoshiaki YAMADA, Yasuhito SAIGA