Patents by Inventor Ikuo Yoneda

Ikuo Yoneda 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: 20150246478
    Abstract: A near-field exposure mask according to an embodiment includes: a silicon substrate; and a near-field light generating unit that is formed on the silicon substrate, the near-field light generating unit being a layer containing at least one element selected from the group consisting of Au, Al, Ag, Cu, Cr, Sb, W, Ni, In, Ge, Sn, Pb, Zn, Pd, and C, or a film stack formed with layers made of some of those materials.
    Type: Application
    Filed: April 10, 2015
    Publication date: September 3, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naomi Shida, Kenji Todori, Shigehiko Mori, Ko Yamada, Masakazu Yamagiwa, Reiko Yoshimura, Yasuyuki Hotta, Tsukasa Tada, Hiroyuki Kashiwagi, Ikuo Yoneda
  • Publication number: 20150224536
    Abstract: A pattern forming method includes determining an amount of curable resin to be formed on a substrate, the curable resin having volatility, the amount of the curable resin being determined by a calculation considering volatile loss of the curable resin, the calculation being performed for each of a plurality of regions of the substrate, forming the curable resin having the determined amount on the substrate, the forming the curable resin being performed for each of the plurality of regions of the substrate, contacting the curable resin formed on the substrate with a template, the template including a pattern to be filled with the curable resin by the contacting, and curing the curable resin under a condition where the curable resin is in contact with the template.
    Type: Application
    Filed: April 27, 2015
    Publication date: August 13, 2015
    Inventors: Takeshi KOSHIBA, Ikuo YONEDA, Tetsuro NAKASUGI
  • Publication number: 20150168825
    Abstract: A near-field exposure mask according to an embodiment includes: a substrate; a concave-convex structure having convexities and concavities and formed on one surface of the substrate; a near-field light generating film arranged at least on a tip portion of each of the convexities, the near-field light generating film being a layer containing at least one element selected from the group consisting of Au, Al, Ag, Cu, Cr, Sb, W, Ni, In, Ge, Sn, Pb, Zn, Pd, and C, or a film stack formed with layers made of some of those materials; and a resin filled in each of the concavities.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 18, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naomi Shida, Kenji Todori, Shigehiko Mori, Reiko Yoshimura, Hiroyuki Kashiwagi, Ikuo Yoneda, Tsukasa Tada
  • Patent number: 9046763
    Abstract: A pattern forming method includes determining an amount of curable resin to be formed on a substrate, the curable resin having volatility, the amount of the curable resin being determined by a calculation considering volatile loss of the curable resin, the calculation being performed for each of a plurality of regions of the substrate, forming the curable resin having the determined amount on the substrate, the forming the curable resin being performed for each of the plurality of regions of the substrate, contacting the curable resin formed on the substrate with a template, the template including a pattern to be filled with the curable resin by the contacting, and curing the curable resin under a condition where the curable resin is in contact with the template.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: June 2, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi Koshiba, Ikuo Yoneda, Tetsuro Nakasugi
  • Patent number: 9029047
    Abstract: A near-field exposure mask according to an embodiment includes: a silicon substrate; and a near-field light generating unit that is formed on the silicon substrate, the near-field light generating unit being a layer containing at least one element selected from the group consisting of Au, Al, Ag, Cu, Cr, Sb, W, Ni, In, Ge, Sn, Pb, Zn, Pd, and C, or a film stack formed with layers made of some of those materials.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: May 12, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naomi Shida, Kenji Todori, Shigehiko Mori, Ko Yamada, Masakazu Yamagiwa, Reiko Yoshimura, Yasuyuki Hotta, Tsukasa Tada, Hiroyuki Kashiwagi, Ikuo Yoneda
  • Patent number: 8973494
    Abstract: According to one embodiment, an imprint method is disclosed. The method can include forming a liquid droplet of a transfer material with a volume greater than a predetermined reference volume by dropping the transfer material onto a major surface of a processing substrate. The method can include reducing the volume of the liquid droplet to be less than the reference volume by volatilizing the liquid droplet. In addition, the method can include filling the transfer material into a recess provided in a transfer surface of a template by bringing the liquid droplet having the volume reduced to be less than the reference volume into contact with the transfer surface of the template.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: March 10, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayuki Hatano, Ikuo Yoneda, Tetsuro Nakasugi, Kenji Ooki
  • Patent number: 8945798
    Abstract: A near-field exposure mask according to an embodiment includes: a substrate; a concave-convex structure having convexities and concavities and formed on one surface of the substrate; a near-field light generating film arranged at least on a tip portion of each of the convexities, the near-field light generating film being a layer containing at least one element selected from the group consisting of Au, Al, Ag, Cu, Cr, Sb, W, Ni, In, Ge, Sn, Pb, Zn, Pd, and C, or a film stack formed with layers made of some of those materials; and a resin filled in each of the concavities.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naomi Shida, Kenji Todori, Shigehiko Mori, Reiko Yoshimura, Hiroyuki Kashiwagi, Ikuo Yoneda, Tsukasa Tada
  • Patent number: 8946080
    Abstract: In one embodiment, a pattern transfer method includes forming a photoreactive resin on a substrate to be processed. The method further includes pressing a mold against the photoreactive resin, the mold including a transparent substrate having a concave-convex pattern, and a light-blocking film provided on a part of surfaces of the concave-convex pattern. The method further includes irradiating the photoreactive resin with light through the mold in a state in which the mold is pressed against the photoreactive resin. The method further includes baking the photoreactive resin in a state in which the mold is pressed against the photoreactive resin after irradiating the photoreactive resin with the light. The method further includes releasing the mold from the photoreactive resin after baking the photoreactive resin. The method further includes rinsing the photoreactive resin with a rinsing solution after releasing the mold.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: February 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Ikuo Yoneda
  • Publication number: 20150014876
    Abstract: Provided is an imprint apparatus that applies a resin to several locations on a substrate, brings the resin and a mold into contact, and transfers a contoured pattern formed in the mold to the resin, comprising: a controller that sets a principal axis direction according to the contoured pattern and determines the application positions of the resin based on the principal axis direction that has been set such that the distances between resin drops that have been applied so as to be separated in the principal axis direction is larger than the distances between resin drops that have been applied so as to be separated in a direction that is perpendicular to the principal axis direction; and a dispenser that applies the resin based on the application position that has been determined.
    Type: Application
    Filed: June 20, 2014
    Publication date: January 15, 2015
    Inventors: Keiji Yamashita, Yutaka Watanabe, Brian Fletcher, Gerard Schmid, Niyaz Khusnatdinov, Se-Hyuk Im, Takuya Kono, Masayuki Hatano, Ikuo Yoneda
  • Publication number: 20150014877
    Abstract: Provided is an imprint apparatus that applies a resin (drops) dispersed, at a plurality of locations on a substrate, brings the resin and a mold into contact, and transfers the contoured pattern that is formed in the mold to the resin comprising: a controller that sets a principal axis direction according to the contoured pattern and an array direction in which a plurality of resin drops are aligned, and determines application positions for the resin such that the array direction is angled with respect to the principal axis direction; and a dispenser that applies the resin based on the application positions that have been determined.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 15, 2015
    Inventors: Keiji YAMASHITA, Yutaka WATANABE, Brian FLETCHER, Gerard SCHMID, Niyaz KHUSNATDINOV, Se-Hyuk IM, Takuya KONO, Masayuki HATANO, Ikuo YONEDA
  • Publication number: 20140300018
    Abstract: According to an aspect of the present invention, there is provided a pattern forming apparatus in which a mold having a pattern is brought into contact with an imprinting material on a substrate to transfer the pattern, the apparatus including: a holding part configured to hold the mold; a moving part configured to move the holding part so that the mold is brought into contact with the imprinting material on the substrate and that the mold is removed therefrom; and a control part configured to control so that at least one of conditions of removing the mold can be changed based on conditions of the pattern formed in the mold, the conditions including a rate and an angle of removing the mold.
    Type: Application
    Filed: June 23, 2014
    Publication date: October 9, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Ikuo Yoneda
  • Publication number: 20140200704
    Abstract: According to one embodiment, a fine processing method includes determining a resist amount required for each first region of a pattern formation surface and a total amount of resist. The method include dividing the total amount of resist by a volume of one resist drop to determine the resist drops total number. The method include determining a provisional position for the resist drop of the total number. The method include assigning the each first region to nearest one resist drop, and partitioning again the pattern formation surface into second regions assigned to the each resist drop. The method include determining a divided value by dividing the volume of the one resist drop by the required total amount of resist determined. The method include finalizing a final position of the each resist drop, if a distribution of the divided value in the pattern formation surface falls within a target range.
    Type: Application
    Filed: March 14, 2014
    Publication date: July 17, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasutada NAKAGAWA, Takuya Kono, Ikuo Yoneda, Masayuki Hatano
  • Patent number: 8691123
    Abstract: According to one embodiment, a fine processing method includes determining a resist amount required for each first region of a pattern formation surface and a total amount of resist. The method include dividing the total amount of resist by a volume of one resist drop to determine the resist drops total number. The method include determining a provisional position for the resist drop of the total number. The method include assigning the each first region to nearest one resist drop, and partitioning again the pattern formation surface into second regions assigned to the each resist drop. The method include determining a divided value by dividing the volume of the one resist drop by the required total amount of resist determined. The method include finalizing a final position of the each resist drop, if a distribution of the divided value in the pattern formation surface falls within a target range.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: April 8, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasutada Nakagawa, Takuya Kono, Ikuo Yoneda, Masayuki Hatano
  • Publication number: 20140072668
    Abstract: According to one embodiment, a mold includes a base material, a pedestal portion and a pattern portion. The base material includes a first surface and a second surface. The pedestal portion protruded from the first surface of the base material and includes a side surface. The pattern portion is provided in the pedestal portion and includes an concave-convex pattern. The pedestal portion includes a first region and a second region. The first region is provided with the concave-convex pattern. The second region is provided between the first region and the side surface. The second region has maximum height equal to maximum height of the first region. The second region has a first height of the second region on the side surface side and a second height of the second region on the first region side. The first height is lower than the second height.
    Type: Application
    Filed: December 31, 2012
    Publication date: March 13, 2014
    Inventors: Ikuo YONEDA, Tetsuro Nakasugi
  • Publication number: 20130260290
    Abstract: A near-field exposure mask according to an embodiment includes: a substrate; a concave-convex structure having convexities and concavities and formed on one surface of the substrate; a near-field light generating film arranged at least on a tip portion of each of the convexities, the near-field light generating film being a layer containing at least one element selected from the group consisting of Au, Al, Ag, Cu, Cr, Sb, W, Ni, In, Ge, Sn, Pb, Zn, Pd, and C, or a film stack formed with layers made of some of those materials; and a resin filled in each of the concavities.
    Type: Application
    Filed: January 31, 2013
    Publication date: October 3, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Naomi Shida, Kenji Todori, Shigehiko Mori, Reiko Yoshimura, Hiroyuki Kashiwagi, Ikuo Yoneda, Tsukasa Tada
  • Publication number: 20130221581
    Abstract: According to one embodiment, the pattern formation apparatus relating to the embodiment is a pattern formation apparatus wherein an object to be patterned (pattern transferring material) is irradiated with light under the state of affixing a three dimensional pattern formed on the main plane of a template to the object to transfer a reverse image of the three dimension pattern into the pattern transferring material the pattern transferring material. The pattern formation apparatus provides a light irradiation part and a control part. The light irradiation part is configured to irradiate light having intensity distribution in the irradiation plane parallel to the main plane. The control part is configured to control the light irradiation part to change the intensity distribution according to time.
    Type: Application
    Filed: September 7, 2012
    Publication date: August 29, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Ikuo YONEDA
  • Patent number: 8485624
    Abstract: According to one embodiment, a droplet dispensing control method includes detecting an amount of positional deviation between a stage on which a substrate is mounted and a template as a template positional deviation amount and detecting an amount of positional deviation between a movement direction of the stage and a nozzle array direction as a nozzle positional deviation amount. The method further includes calculating a stage movement direction correction value and an ejection timing correction value of the imprint material as correction values for eliminating the positional deviation of the landing position of the imprint material. The method further includes controlling the movement direction of the stage using the stage movement direction correction value and controlling the ejection timing of the imprint material using the ejection timing correction value.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: July 16, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinji Mikami, Ikuo Yoneda
  • Patent number: 8480946
    Abstract: An imprint method, in which pattern forming is performed by having a light curable material applied on a sample face of a substrate being a processing target hardened by being exposed to light in a state where the light curable material and a pattern formed surface of a template contact each other, the pattern formed surface having a concave-convex pattern formed thereon; wherein in one exposure performed with respect to a predetermined shot of the light curable material, an exposure amount at a light curable material on a first region which contacts a pattern formed region including the concave-convex pattern of the template is greater than an exposure amount at a light curable material on a second region which at least contacts a part of a pattern periphery region of the template, the pattern periphery region existing in a periphery of the pattern formed region of the template.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: July 9, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinji Mikami, Ikuo Yoneda
  • Patent number: 8468480
    Abstract: A method of designing a template pattern used for imprint lithography, includes generating data of a dummy template pattern to be formed in a third area between first and second areas of a template based on data of a design pattern of the template, the data of the dummy template pattern being generated so that a third surface area ratio showing a ratio of a surface area of the third area to an area of the third area is set smaller than a first surface area ratio showing a ratio of a surface area of the first area to an area of the first area and larger than a second surface area ratio showing a ratio of a surface area of the second area to an area of the second area.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: June 18, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryoichi Inanami, Hiroshi Tokue, Ikuo Yoneda
  • Patent number: 8444889
    Abstract: An imprint pattern forming method includes contacting a template with a pattern in a front surface with an imprint material formed in a substrate to fill the imprint material into the pattern, curing the imprint material filled in the pattern to form an imprint material pattern, and after forming the imprint material pattern, separating the template from the imprint material pattern while applying pressure to the back surface of the template.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: May 21, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Tokue, Ikuo Yoneda, Ryoichi Inanami