Patents by Inventor Soichi Owa

Soichi Owa 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: 9946162
    Abstract: An exposure method for exposing a mask pattern, which includes plural types of patterns, with a high throughput and optimal illumination conditions for each type of pattern. The method includes guiding light from a first spatial light modulator illuminated with pulse lights of illumination light to a second spatial light modulator and exposing a wafer with light from the second spatial light modulator, accompanied by: controlling a conversion state of the second spatial light modulator including a plurality of second mirror elements; and controlling a conversion state of the first spatial light modulator including a plurality of first mirror elements to control intensity distribution of the illumination light on a predetermined plane between the first spatial light modulator and the second spatial light modulator.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: April 17, 2018
    Assignee: Nikon Corporation
    Inventor: Soichi Owa
  • Patent number: 9846371
    Abstract: An exposure apparatus exposes a substrate by projecting a pattern image onto the substrate through a liquid. The exposure apparatus includes a projection optical system by which the pattern image is projected onto the substrate, and a movable member which is movable relative to the projection optical system. A liquid-repellent member, at least a part of a surface of which is liquid-repellent, is provided detachably on the movable member, the liquid-repellent member being different from the substrate.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: December 19, 2017
    Assignee: NIKON CORPORATION
    Inventors: Soichi Owa, Nobutaka Magome, Shigeru Hirukawa, Yoshihiko Kudo, Jiro Inoue, Hirotaka Kohno, Masahiro Nei, Motokatsu Imai, Hiroyuki Nagasaka, Kenichi Shiraishi, Yasufumi Nishii, Hiroaki Takaiwa
  • Publication number: 20170329234
    Abstract: An exposure apparatus exposes a substrate by projecting a pattern image onto the substrate through a liquid. The exposure apparatus includes a projection optical system by which the pattern image is projected onto the substrate, and a movable member which is movable relative to the projection optical system. A liquid-repellent member, at least a part of a surface of which is liquid-repellent, is provided detachably on the movable member, the liquid-repellent member being different from the substrate.
    Type: Application
    Filed: July 31, 2017
    Publication date: November 16, 2017
    Applicant: NIKON CORPORATION
    Inventors: Soichi OWA, Nobutaka MAGOME, Shigeru HIRUKAWA, Yoshihiko KUDO, Jiro INOUE, Hiroyuki NAGASAKA, Hirotaka KOHNO, Masahiro NEI, Motokatsu IMAI, Kenichi SHIRAISHI, Yasufumi NISHII, Hiroaki TAKAIWA
  • Publication number: 20170219931
    Abstract: A spatial light modulator has a plurality of mirror elements each of which is controllable into a first state in which the mirror element reflects incident light with a change in a phase thereof by a first phase and a second state in which the mirror element reflects the incident light with a change in the phase thereof by a second phase 180° different from the first phase; and a boundary portion arranged between the mirror elements, which changes the phase of the incident light by a third phase substantially (90°+k·180°) (where k is an integer) different from the first phase. In projecting a pattern with the use of the spatial light modulator, an error caused in the pattern can be reduced even if the light quantity of light passing a gap region between the optical elements in the spatial light modulator is large.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Applicant: Nikon Corporation
    Inventors: Soichi Owa, Yoji Watanabe, Tomoharu Fujiwara
  • Patent number: 9651871
    Abstract: A spatial light modulator has a plurality of mirror elements each of which is controllable into a first state in which the mirror element reflects incident light with a change in a phase thereof by a first phase and a second state in which the mirror element reflects the incident light with a change in the phase thereof by a second phase 180° different from the first phase; and a boundary portion arranged between the mirror elements, which changes the phase of the incident light by a third phase substantially (90°+k·180°) (where k is an integer) different from the first phase. In projecting a pattern with the use of the spatial light modulator, an error caused in the pattern can be reduced even if the light quantity of light passing a gap region between the optical elements in the spatial light modulator is large.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 16, 2017
    Assignee: Nikon Corporation
    Inventors: Soichi Owa, Yoji Watanabe, Tomoharu Fujiwara
  • Publication number: 20170090300
    Abstract: An exposure method for exposing a mask pattern, which includes plural types of patterns, with a high throughput and optimal illumination conditions for each type of pattern. The method includes guiding light from a first spatial light modulator illuminated with pulse lights of illumination light to a second spatial light modulator and exposing a wafer with light from the second spatial light modulator, accompanied by: controlling a conversion state of the second spatial light modulator including a plurality of second mirror elements; and controlling a conversion state of the first spatial light modulator including a plurality of first mirror elements to control intensity distribution of the illumination light on a predetermined plane between the first spatial light modulator and the second spatial light modulator.
    Type: Application
    Filed: December 9, 2016
    Publication date: March 30, 2017
    Inventor: Soichi OWA
  • Patent number: 9551942
    Abstract: An exposure method for exposing a mask pattern, which includes plural types of patterns, with a high throughput and optimal illumination conditions for each type of pattern. The method includes guiding light from a first spatial light modulator illuminated with pulse lights of illumination light to a second spatial light modulator and exposing a wafer with light from the second spatial light modulator, accompanied by: controlling a conversion state of the second spatial light modulator including a plurality of second mirror elements; and controlling a conversion state of the first spatial light modulator including a plurality of first mirror elements to control intensity distribution of the illumination light on a predetermined plane between the first spatial light modulator and the second spatial light modulator.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: January 24, 2017
    Assignee: NIKON CORPORATION
    Inventor: Soichi Owa
  • Publication number: 20160252828
    Abstract: An exposure apparatus exposes a substrate by irradiating exposure light on the substrate through liquid. The exposure apparatus has a substrate holder for holding the substrate, a substrate stage capable of moving the substrate held by the substrate holder, and a temperature adjusting system for adjusting the temperature of the substrate holder. The temperature of the substrate is controlled so that there is no difference in temperature between the substrate and the liquid, thereby preventing a reduction in exposure accuracy resulting from variation in temperature of the liquid.
    Type: Application
    Filed: April 8, 2016
    Publication date: September 1, 2016
    Applicant: NIKON CORPORATION
    Inventors: Naoyuki KOBAYASHI, Soichi OWA, Shigeru HIRUKAWA, Yasuhiro OMURA
  • Publication number: 20160223914
    Abstract: A spatial light modulator has a plurality of mirror elements each of which is controllable into a first state in which the mirror element reflects incident light with a change in a phase thereof by a first phase and a second state in which the mirror element reflects the incident light with a change in the phase thereof by a second phase 180° different from the first phase; and a boundary portion arranged between the mirror elements, which changes the phase of the incident light by a third phase substantially (90°+k·180°) (where k is an integer) different from the first phase. In projecting a pattern with the use of the spatial light modulator, an error caused in the pattern can be reduced even if the light quantity of light passing a gap region between the optical elements in the spatial light modulator is large.
    Type: Application
    Filed: January 29, 2016
    Publication date: August 4, 2016
    Applicant: Nikon Corporation
    Inventors: Soichi Owa, Yoji Watanabe, Tomoharu Fujiwara
  • Publication number: 20160195640
    Abstract: An optical material which has a relative permeability different from 1 to light having a wavelength in, for example, the infrared region or shorter than the infrared region and which is stable in structure, and a liquid and a solid (optical element) using the optical material. The optical material is a powder used as a component of a liquid or solid to which an illuminating light is irradiated, and includes a large number of resonating elements which constitute the powder and each of which is formed of a conductor having a width approximately same as or smaller than a wavelength of the illumination light, and a protective film which is formed of a disc-shaped insulator, wherein an entire surface of each of the split-rind resonators is covered by the protective film.
    Type: Application
    Filed: March 11, 2016
    Publication date: July 7, 2016
    Applicant: NIKON CORPORATION
    Inventors: Soichi OWA, Shunji WATANABE, Junji SUZUKI, Kazuhiro KIDO, Hidemitsu TOBA
  • Publication number: 20160124314
    Abstract: An exposure method for exposing a mask pattern, which includes plural types of patterns, with a high throughput and optimal illumination conditions for each type of pattern. The method includes guiding light from a first spatial light modulator illuminated with pulse lights of illumination light to a second spatial light modulator and exposing a wafer with light from the second spatial light modulator, accompanied by: controlling a conversion state of the second spatial light modulator including a plurality of second mirror elements; and controlling a conversion state of the first spatial light modulator including a plurality of first mirror elements to control intensity distribution of the illumination light on a predetermined plane between the first spatial light modulator and the second spatial light modulator.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Inventor: Soichi OWA
  • Patent number: 9316921
    Abstract: An exposure apparatus exposes a substrate by irradiating exposure light on the substrate through liquid. The exposure apparatus has a substrate holder for holding the substrate, a substrate stage capable of moving the substrate held by the substrate holder, and a temperature adjusting system for adjusting the temperature of the substrate holder. The temperature of the substrate is controlled so that there is no difference in temperature between the substrate and the liquid, thereby preventing a reduction in exposure accuracy resulting from variation in temperature of the liquid.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: April 19, 2016
    Assignee: NIKON CORPORATION
    Inventors: Naoyuki Kobayashi, Soichi Owa, Shigeru Hirukawa, Yasuhiro Omura
  • Patent number: 9310520
    Abstract: An optical material which has a relative permeability different from 1 to light having a wavelength in, for example, the infrared region or shorter than the infrared region and which is stable in structure, and a liquid and a solid (optical element) using the optical material. The optical material is a powder used as a component of a liquid or solid to which an illuminating light is irradiated, and includes a large number of resonating elements which constitute the powder and each of which is formed of a conductor having a width approximately same as or smaller than a wavelength of the illumination light, and a protective film which is formed of a disc-shaped insulator, wherein an entire surface of each of the split-ring resonators is covered by the protective film.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 12, 2016
    Assignee: NIKON CORPORATION
    Inventors: Soichi Owa, Shunji Watanabe, Junji Suzuki, Kazuhiro Kido, Hidemitsu Toba
  • Patent number: 9291814
    Abstract: A spatial light modulator has a plurality of mirror elements each of which is controllable into a first state in which the mirror element reflects incident light with a change in a phase thereof by a first phase and a second state in which the mirror element reflects the incident light with a change in the phase thereof by a second phase 180° different from the first phase; and a boundary portion arranged between the mirror elements, which changes the phase of the incident light by a third phase substantially (90°+k·180°) (where k is an integer) different from the first phase. In projecting a pattern with the use of the spatial light modulator, an error caused in the pattern can be reduced even if the light quantity of light passing a gap region between the optical elements in the spatial light modulator is large.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: March 22, 2016
    Assignee: Nikon Corporation
    Inventors: Soichi Owa, Yoji Watanabe, Tomoharu Fujiwara
  • Patent number: 9268237
    Abstract: An exposure apparatus exposes a substrate by projecting a pattern image onto the substrate through a liquid. The exposure apparatus includes a projection optical system by which the pattern image is projected onto the substrate, and a movable member which is movable relative to the projection optical system. A liquid-repellent member, at least a part of a surface of which is liquid-repellent, is provided detachably on the movable member, the liquid-repellent member being different from the substrate.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: February 23, 2016
    Assignee: NIKON CORPORATION
    Inventors: Soichi Owa, Nobutaka Magome, Shigeru Hirukawa, Yoshihiko Kudo, Jiro Inoue, Hirotaka Kohno, Masahiro Nei, Motokatsu Imai, Hiroyuki Nagasaka, Kenichi Shiraishi, Yasufumi Nishii, Hiroaki Takaiwa
  • Patent number: 9268235
    Abstract: An exposure method for exposing a mask pattern, which includes plural types of patterns, with a high throughput and optimal illumination conditions for each type of pattern. The method includes guiding light from a first spatial light modulator illuminated with pulse lights of illumination light to a second spatial light modulator and exposing a wafer with light from the second spatial light modulator, accompanied by: controlling a conversion state of the second spatial light modulator including a plurality of second mirror elements; and controlling a conversion state of the first spatial light modulator including a plurality of first mirror elements to control intensity distribution of the illumination light on a predetermined plane between the first spatial light modulator and the second spatial light modulator.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 23, 2016
    Assignee: Nikon Corporation
    Inventor: Soichi Owa
  • Patent number: 9239525
    Abstract: During a period after starting exposure to a plurality of shot areas subject to exposure on a wafer until completing the exposure, a light via a slit pair arranged on a stage that holds the wafer, of illumination light via a pattern generating device, is received, and information on a positional relation between an illumination light and the stage (and hence a positional relation between the illumination light and the wafer) is detected. With this operation, even if the information on the positional relation between the illumination light and the wafer varies due to some reason, information on the variation can be detected while performing the exposure to the plurality of shot areas. Accordingly, high-precision exposure can be achieved in an exposure operation, by considering this detection results.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: January 19, 2016
    Assignee: NIKON CORPORATION
    Inventor: Soichi Owa
  • Patent number: 9235139
    Abstract: An exposure apparatus exposes a substrate by projecting a pattern image onto the substrate through a liquid. The exposure apparatus includes a projection optical system by which the pattern image is projected onto the substrate, and a movable member which is movable relative to the projection optical system. A liquid-repellent member, at least a part of a surface of which is liquid-repellent, is provided detachably on the movable member, the liquid-repellent member being different from the substrate.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: January 12, 2016
    Assignee: NIKON CORPORATION
    Inventors: Soichi Owa, Nobutaka Magome, Shigeru Hirukawa, Yoshihiko Kudo, Jiro Inoue, Hirotaka Kohno, Masahiro Nei, Motokatsu Imai, Hiroyuki Nagasaka, Kenichi Shiraishi, Yasufumi Nishii, Hiroaki Takaiwa
  • Publication number: 20150301457
    Abstract: An exposure apparatus exposes a substrate by projecting a pattern image onto the substrate through a liquid. The exposure apparatus includes a projection optical system by which the pattern image is projected onto the substrate, and a movable member which is movable relative to the projection optical system. A liquid-repellent member, at least a part of a surface of which is liquid-repellent, is provided detachably on the movable member, the liquid-repellent member being different from the substrate.
    Type: Application
    Filed: April 27, 2015
    Publication date: October 22, 2015
    Applicant: Nikon Corporation
    Inventors: Soichi OWA, Nobutaka MAGOME, Shigeru HIRUKAWA, Yoshihiko KUDO, Jiro INOUE, Hirotaka KOHNO, Masahiro NEI, Motokatsu IMAI, Hiroyuki NAGASAKA, Kenichi SHIRAISHI, Yasufumi NISHII, Hiroaki TAKAIWA
  • Patent number: 9063436
    Abstract: An exposure apparatus is provided with a projection optical system, and the projection optical system includes a first optical element disposed most closely to an image plane of the projection optical system. The exposure apparatus includes a first liquid immersion mechanism which forms a first liquid immersion area of a first liquid between the first optical element and an upper surface of a transparent member provided on a side of the image plane of the projection optical system, and an observation unit which observes a state of the first liquid immersion area. It is possible to grasp the state of the liquid immersion area of the liquid, thereby executing optimum liquid immersion exposure.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: June 23, 2015
    Assignee: NIKON CORPORATION
    Inventors: Soichi Owa, Hiroyuki Nagasaka, Ryu Sugawara