Patents by Inventor Makoto Shibuta

Makoto Shibuta 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: 8089615
    Abstract: A substrate holding apparatus includes a base part and a support part that is formed on the base part and supports a rear surface of the substrate. A first circumferential wall is formed on the base part, has a first upper surface that opposes the rear surface of the substrate, which is supported by the support part, and surrounds a first space that is between the substrate, which is supported by the support and the base part. A second circumferential wall is formed on the base part, has a second upper surface that opposes the rear surface of the substrate, which is supported by the support part, with a gap interposed therebetween, and surrounds the first circumferential wall. A third circumferential wall is formed on the base part, has a third upper surface that opposes the rear surface of the substrate, which is supported by the support part; and surrounds the support part and the second circumferential wall.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 3, 2012
    Assignee: Nikon Corporation
    Inventors: Takeyuki Mizutani, Yuichi Shibazaki, Makoto Shibuta
  • Publication number: 20090109413
    Abstract: A maintenance method for performing maintenance of an exposure apparatus including a liquid immersion space-forming member which forms a liquid-immersion area by supplying liquid in a space between an optical member and a substrate; a liquid supply mechanism which supplies the liquid to the liquid-immersion space; a substrate stage which moves the substrate; and a measuring stage on which a reference mark is formed. To clean the liquid-immersion space-forming member, a cleaning liquid is supplied to a space between the measuring stage and the liquid-immersion space-forming member. The exposure apparatus is provided with various types of cleaning mechanisms for cleaning the liquid-immersion space-forming member. The liquid-immersion exposure can be performed while efficiently performing maintenance of the exposure apparatus.
    Type: Application
    Filed: November 21, 2008
    Publication date: April 30, 2009
    Applicant: NIKON CORPORATION
    Inventors: Yuichi Shibazaki, Takeyuki Mizutani, Go Ichinose, Makoto Shibuta
  • Publication number: 20090066923
    Abstract: An exposure apparatus which prevents damages due to leaked out liquid from expanding and can maintain exposure accuracy and measuring accuracy. The exposure apparatus includes a first stage which is movable relative to the projection optical system, a second stage which is movable relative to the projection optical system, and a liquid immersion system that is capable of forming a liquid immersion region of a liquid under the projection optical system. The first and second stages are moved in a state in which a first overhang portion provided at the first stage and a second overhang portion provided at the second stage are brought close to or in contact with each other, such that the liquid immersion region is moved from one of upper surfaces of the first and second overhang portions to the other of the upper surfaces of the first and second overhang portions.
    Type: Application
    Filed: October 24, 2008
    Publication date: March 12, 2009
    Applicant: NIKON CORPORATION
    Inventor: Makoto Shibuta
  • Patent number: 7456929
    Abstract: An exposure apparatus which prevents damages due to leaked out liquid from expanding and can maintain exposure accuracy and measuring accuracy. The exposure apparatus includes first and second stages (ST1, ST2) which can independently move within an XY-plane on an image plane side of a projection optical system (PL); a drive mechanism (SD) which moves the first stage and the second stage together with the stage being close to or in contact with each other; a liquid immersion mechanism (1) which forms a liquid immersion area on an upper plane of at least one of the stages of the first stage and the second stage; and a detecting device (60) which detects liquid leaked out from between the first stage and the second stage.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: November 25, 2008
    Assignee: Nikon Corporation
    Inventor: Makoto Shibuta
  • Publication number: 20080239275
    Abstract: The some aspects of the present invention provides a substrate holding apparatus that comprises: a base part; a support part that is formed on the base part and supports a rear surface of the substrate; a first circumferential wall that: is formed on the base part; has a first upper surface that opposes the rear surface of the substrate, which is supported by the support part; and surrounds a first space that is between the substrate, which is supported by the support part, and the base part; a second circumferential wall that: is formed on the base part; has a second upper surface that opposes the rear surface of the substrate, which is supported by the support part, with a gap interposed therebetween; and surrounds the first circumferential wall; a third circumferential wall that: is formed on the base part; has a third upper sure that opposes the rear surface of the substrate, which is supported by the support part; and surrounds the support part and the second circumferential wall; a fluid flow port that
    Type: Application
    Filed: June 5, 2008
    Publication date: October 2, 2008
    Applicant: NIKON CORPORATION
    Inventors: Takeyuki MIZUTANI, Yuichi Shibazaki, Makoto Shibuta
  • Publication number: 20080111978
    Abstract: An exposure apparatus which prevents damages due to leaked out liquid from expanding and can maintain exposure accuracy and measuring accuracy. The exposure apparatus includes first and second stages (ST1, ST2) which can independently move within an XY-plane on an image plane side of a projection optical system (PL); a drive mechanism (SD) which moves the first stage and the second stage together with the stage being close to or in contact with each other; a liquid immersion mechanism (1) which forms a liquid immersion area on an upper plane of at least one of the stages of the first stage and the second stage; and a detecting device (60) which detects liquid leaked out from between the first stage and the second stage.
    Type: Application
    Filed: October 12, 2005
    Publication date: May 15, 2008
    Applicant: NIKON CORPORATION
    Inventor: Makoto Shibuta
  • Publication number: 20080111984
    Abstract: To provide a substrate holding apparatus that can rapidly recover liquid that has infiltrated the rear surface side of a substrate. A substrate holding apparatus comprises: a base; a first support part, which is formed on the base and supports a rear surface of a substrate to be processed; a first circumferential wall part, which is formed on the base and is provided so that it opposes the rear surface of the substrate to be processed and surrounds the first support part; and a first recovery port, which is provided on the outer side of the first circumferential wall part; wherein, the flow of a gas along the first circumferential wall part moves the liquid on the outer side of the first circumferential wall part to the first recovery port, where the liquid is recovered.
    Type: Application
    Filed: December 14, 2005
    Publication date: May 15, 2008
    Applicant: Nikon Corporation
    Inventor: Makoto Shibuta
  • Publication number: 20080043210
    Abstract: An exposure apparatus that can prevent disadvantages due to a leaked liquid is provided. The exposure apparatus includes: a substrate holder (PH) that includes a peripheral wall portion (33) and supporting portions (34) located on an inside of the peripheral wall portion (33) and that supports a substrate (P) with the supporting portions (34) by negatively pressurizing a space (31) surrounded by the peripheral wall portion (33); and a recovery mechanism that includes a collection inlets (61) provided on the inside of the peripheral wall portion (33) and a vacuum system (63) connected to the collection inlets (61), in which a liquid penetrated from an outer periphery of the substrate (P) is sucked and recovered, in the state with an upper surface (33A) of the peripheral wall portion (33) and a back surface (Pb) of the substrate (P) being spaced at a first distance.
    Type: Application
    Filed: June 21, 2005
    Publication date: February 21, 2008
    Applicant: Nikon Corporation
    Inventor: Makoto Shibuta
  • Publication number: 20070269294
    Abstract: To provide a substrate holding apparatus which can prevent a liquid from entering into a rear surface side of a substrate. A substrate holding apparatus (PH) is provided with a base material (PHB), a first holding portion (PH1) formed on the base material (PHB) for holding the substrate (P), and a second holding portion (PH2) formed on the base material (PHB) for holding a plate member (T) by surrounding the circumference of a processing substrate (P) held by the first holding portion (PH1). The second holding portion (PH2) holds the plate member (T) so as to form a second space (32) on the side of the rear surface (Tb) of the plate member (T). On the rear surface (Tb) of the plate member (T), an absorbing member (100) is arranged for absorbing the liquid (LQ) entered from a gap (A) between the substrate (P) held by the first holding portion (PH1) and the plate member (T) held by the second holding portion (PH2).
    Type: Application
    Filed: September 16, 2005
    Publication date: November 22, 2007
    Applicant: NIKON CORPORATION
    Inventors: Hiroyuki Nagasaka, Makoto Shibuta, Katsushi Nakano, Yuichi Yushida, Hiroaki Takaiwa
  • Publication number: 20070182945
    Abstract: An exposure apparatus which prevents the damage due to the liquid having flowed out from spreading and enables satisfactory performances of the exposure processes and the measurement processes is provided. An exposure apparatus (EX) includes a movable table (PT), a base member (41) having an upper surface (41A) that guides the movement of the table (PT), and a detecting device (60) that detects whether there is a liquid on the upper surface (41A) of the base member (41).
    Type: Application
    Filed: July 11, 2005
    Publication date: August 9, 2007
    Inventor: Makoto Shibuta