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: 20100244326
    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: Application
    Filed: March 18, 2010
    Publication date: September 30, 2010
    Inventors: Hiroshi Tokue, Ikuo Yoneda, Ryoichi Inanami
  • Publication number: 20100237045
    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: March 18, 2010
    Publication date: September 23, 2010
    Inventors: Takeshi KOSHIBA, Ikuo Yoneda, Tetsuro Nakasugi
  • Publication number: 20100237540
    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: Application
    Filed: March 16, 2010
    Publication date: September 23, 2010
    Inventors: Ryoichi INANAMI, Hiroshi Tokue, Ikuo Yoneda
  • Publication number: 20100124601
    Abstract: A pattern forming method includes calculating amount of curable resin to be formed on a substrate, forming curable resin having the calculated amount on the substrate, filling a pattern of the template with the curable resin on the substrate by contacting the template with the curable resin on the substrate, curing the curable resin with the template being contacted with the curable resin, forming a pattern in the cured curable resin, which includes separating the template from the cured curable resin, and forming a pattern on the substrate based on the pattern formed in the curable resin, wherein the calculating the amount of curable resin to be formed on the substrate is performed based on a relationship between density or shape of a pattern to be formed on the template and filling time for filling the pattern to be formed on the template with the curable resin.
    Type: Application
    Filed: September 22, 2009
    Publication date: May 20, 2010
    Inventors: Takumi OTA, Ikuo Yoneda
  • Publication number: 20100078860
    Abstract: An imprint method includes applying a light curable resin on a substrate to be processed, the substrate including first and second regions on which the light curable resin is applied, contacting an imprint mold with the light curable resin, curing the light curable resin by irradiating the light curable resin with light passing through the imprint mold, generating gas by performing a predetermined process to the light curable resin applied on a region of the substrate, the region including at least the first region, wherein an amount of gas generated from the light curable resin applied on the first region is larger than an amount of gas generated from the light curable resin of the second region, and forming a pattern by separating the imprint mold from the light curable resin after the gas being generated.
    Type: Application
    Filed: September 21, 2009
    Publication date: April 1, 2010
    Inventors: Ikuo Yoneda, Kentaro Matsunaga, Yukiko Kikuchi, Yoshihisa Kawamura, Eishi Shiobara, Shinichi Ito, Tetsuro Nakasugi, Hirokazu Kato
  • Publication number: 20100072647
    Abstract: A patterning method according to an embodiment of the present invention comprises: acquiring information about a surface state of an underlying film formed on a substrate; determining, based on the surface state, whether irregularity/foreign matter is present in each shot region in which a pattern is to be formed; and solidifying a resist agent while a first template, when it is determined that no irregularity/foreign matter is present in the shot region, or a second template that is different from the first template, when it is determined that irregularity/foreign matter is present in the shot region, is brought close to the underlying film on the shot region at a certain distance with the resist agent therebetween.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 25, 2010
    Inventors: Hiroshi TOKUE, Ikuo YONEDA, Shinji MIKAMI, Takumi OTA
  • Publication number: 20100075443
    Abstract: A template inspection method for performing defect inspection of a template, by bringing a pattern formation surface of a template used to form a pattern close to a first fluid coated on a flat substrate, filling the first fluid into a pattern of the template, and by performing optical observation of the template in a state that the first fluid is sandwiched between the template and the substrate, wherein a difference between an optical constant of the first fluid and an optical constant of the template is larger than a difference between an optical constant of air and the optical constant of the template.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 25, 2010
    Inventors: Ikuo YONEDA, Tetsuro Nakasugi, Masamitsu Itoh, Ryoichi Inanami
  • Publication number: 20100021848
    Abstract: According to an aspect of the present invention, there is provided a method for forming a pattern including: applying a photosensitive resin onto a film on a wafer substrate; partly exposing the photosensitive resin to light and developing the photosensitive resin to form a first pattern having an opening portion; applying a photo-curable material onto the film exposed by the opening portion of the first pattern; bringing one face of an optically-transmissive template having a second pattern formed on the one face into contact with the photo-curable material, the second pattern including projections and reentrants; irradiating the photo-curable material with light; and separating the template from the photo-curable material.
    Type: Application
    Filed: July 24, 2008
    Publication date: January 28, 2010
    Inventors: Ikuo Yoneda, Shunko Magoshi
  • Publication number: 20100022036
    Abstract: According to an aspect of the present invention, there is provided a template including: a template substrate; patterns for forming device patterns on a wafer substrate; and a charging monitoring pattern, a size of the charging monitoring pattern being equal to a largest pattern in the patterns for forming the device patterns.
    Type: Application
    Filed: July 25, 2008
    Publication date: January 28, 2010
    Inventors: Ikuo YONEDA, Takumi Ota, Takeshi Koshiba
  • Publication number: 20090315223
    Abstract: A template includes a substrate, an element pattern formed on a surface of the substrate, and a light absorbing portion formed on or inside the substrate.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 24, 2009
    Inventors: Ikuo Yoneda, Shinji Mikami, Takumi Ota, Tetsuro Nakasugi
  • Publication number: 20090267267
    Abstract: An imprint method includes contacting a template on a substrate, the template including a pattern to be transferred on the substrate, separating the template from the substrate, and removing particle adhered on the template before contacting the template on the substrate, the removing the particle including pressing the template on an adhesive member and separating the pressed template from the adhesive member, wherein adhesiveness of the adhesive member to the template is higher than adhesiveness of the adhesive member to the substrate.
    Type: Application
    Filed: April 20, 2009
    Publication date: October 29, 2009
    Inventors: Ikuo Yoneda, Tetsuro Nakasugi, Shinji Mikami
  • Publication number: 20090267268
    Abstract: An imprint system has a design data storing section which stores template information and remaining film thickness set value information, a vaporization-to-be-compensated storing section which stores a plurality of distributions of applied amounts for compensating vaporization, an arithmetic section which calculates a distribution of an applied amount for filling a pattern based upon said template information, calculates a distribution of an applied amount for forming a remaining film thickness based upon said remaining film thickness set value information, calculates a pattern density of the template from said template information, extracts a distribution of an applied amount for compensating vaporization, corresponding to this pattern density, from said vaporization-to-be-compensated storing section, and adds up this extracted distribution of an applied amount for compensating vaporization, said distribution of an applied amount for filling a pattern, and said distribution of an applied amount for forming a
    Type: Application
    Filed: September 25, 2008
    Publication date: October 29, 2009
    Inventors: Ikuo YONEDA, Shinji Mikami
  • Publication number: 20090224436
    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: Application
    Filed: March 5, 2009
    Publication date: September 10, 2009
    Inventors: Shinji MIKAMI, Ikuo YONEDA
  • Publication number: 20090095711
    Abstract: A microfabrication apparatus for pressing an original plate including a pattern down on a substrate to transfer the pattern on the substrate includes a first measurement unit for measuring relative positional displacement between the substrate and the plate above the substrate, a position correction unit for correcting relative position between the substrate and the plate such that the pattern is to be transferred on a first predetermined position of the substrate based on the relative positional displacement measured by the first measurement unit, a pressing unit for pressing the plate above the substrate down on the substrate to transfer the pattern on the substrate in a state that the relative positional displacement between the substrate and the plate is corrected by the position correction unit, and a second measurement unit for measuring relative positional relationship between the pattern transferred on the substrate and a pattern previously formed on the substrate.
    Type: Application
    Filed: September 25, 2008
    Publication date: April 16, 2009
    Inventors: Takeshi Koshiba, Yumi Nakajima, Tetsuro Nakasugi, Kazuo Tawarayama, Ikuo Yoneda, Hiroyuki Mizuno
  • Publication number: 20090045539
    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: July 25, 2008
    Publication date: February 19, 2009
    Inventor: Ikuo YONEDA
  • Publication number: 20080214010
    Abstract: According to the present invention, there is provided a semiconductor device fabrication method comprising, bringing a mold having a predetermined pattern into contact with at least a portion of an imprinting material formed on a substrate to be processed, and forming the pattern on the substrate to be processed by sequentially transferring the pattern for each shot, wherein one of a dicing region and a monitor pattern formation region of the substrate to be processed is coated with the imprinting material.
    Type: Application
    Filed: January 23, 2008
    Publication date: September 4, 2008
    Inventors: Ikuo YONEDA, Shunko MAGOSHI
  • Patent number: 7390365
    Abstract: A developing method comprises determining in advance the relation of resist dissolution concentration in a developing solution and resist dissolution speed by the developing solution, estimating in advance the resist dissolution concentration where the resist dissolution speed is a desired speed or more from the relation, and developing in a state in which the resist dissolution concentration in the developing solution is the estimated dissolution concentration or less.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: June 24, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masamitsu Itoh, Ikuo Yoneda, Hideaki Sakurai
  • Patent number: 7368735
    Abstract: Drawing-data creating method includes selecting charged beam drawing-apparatus dividing drawing area into main fields, subfields and unit fields (U-fields), dividing design data (D-data) corresponding to pattern drawn on area into first D-data corresponding to main fields, dividing first D-data into second D-data corresponding to subfields, dividing second D-data into third D-data corresponding to U-fields, evaluating resist resolution to predetermined dimension on U-fields, creating table relating U-fields to resolution based on result of evaluating the resolution, judging whether third D-data corresponds to data having the dimension and corresponds to pattern falling in U-field having rejectable resolution is based on the dimension and table, and converting data judged to correspond to the data among third D-data into first drawing-data after coordinate conversion so that the data fall in U-field having acceptable resolution, and converting data judged not to correspond to the data among third D-data into s
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: May 6, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Ikuo Yoneda
  • Publication number: 20080090170
    Abstract: A pattern forming template used in a nano-imprinting method is disclosed. An imprint material layer formed of liquid having a photo-setting property is coated on a to-be-processed substrate. A pattern is transferred onto the imprint material layer by applying light to a surface on which the pattern is not formed from above the surface to cure the imprint material layer while a surface of the template on which the pattern having concave and convex portions is formed is kept in contact with the imprint material layer. Dummy grooves are formed in the template to absorb a surplus portion of the liquid on the imprint material layer.
    Type: Application
    Filed: October 3, 2007
    Publication date: April 17, 2008
    Inventor: Ikuo YONEDA
  • Patent number: 7094522
    Abstract: A developing method comprises determining in advance the relation of resist dissolution concentration in a developing solution and resist dissolution speed by the developing solution, estimating in advance the resist dissolution concentration where the resist dissolution speed is a desired speed or more from the relation, and developing in a state in which the resist dissolution concentration in the developing solution is the estimated dissolution concentration or less.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: August 22, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masamitsu Itoh, Ikuo Yoneda, Hideaki Sakurai