Patents by Inventor Kei Hayasaki

Kei Hayasaki 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: 7399578
    Abstract: A manufacturing method of an alkaline solution, comprising dissolving a gaseous molecule having oxidizing properties or reducing properties in an aqueous alkaline solution.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: July 15, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Riichiro Takahashi, Kei Hayasaki, Tomoyuki Takeishi, Shinichi Ito
  • Patent number: 7368209
    Abstract: An method for evaluating sensitivity of a photoresist includes transferring an exposure dose monitor mark onto an inspection resist film with an inspection setting exposure dose using an exposure tool. Inspection sensitivity index varying according to the inspection setting exposure dose is measured, using an inspection transferred image of the exposure dose monitor mark delineated on the inspection resist film. An inspection photoresist sensitivity of the inspection resist film is calculated using sensitivity calibration data, based on the inspection sensitivity index.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: May 6, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Eishi Shiobara, Kei Hayasaki, Tadahito Fujisawa, Shinichi Ito
  • Patent number: 7364839
    Abstract: A pattern forming method comprises forming a photosensitive resin film on a substrate, exposing the photosensitive resin film, forming a pattern of the photosensitive resin film by supplying a developing solution to the photosensitive resin film, and slimming to remove a surface layer of the pattern by causing the pattern to contact with an activated water.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: April 29, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kei Hayasaki, Shinichi Ito, Tomoyuki Takeishi, Kenji Kawano, Tatsuhiko Ema
  • Publication number: 20080090001
    Abstract: There is disclosed a film forming method comprising continuously discharging a solution adjusted so as to spread over a substrate by a given amount to the substrate through a discharge port disposed in a nozzle, moving the nozzle and substrate with respect to each other, and holding the supplied solution onto the substrate to form a liquid film, wherein a distance h between the discharge port of the nozzle and the substrate is set to be not less than 2 mm and to be in a range less than 5×10?5 q? (mm) given with respect to a surface tension ? (N/m) of the solution, discharge speed q (m/sec) of the solution continuously discharged through the discharge port, and a constant of 5×10?5 (m·sec/N).
    Type: Application
    Filed: December 3, 2007
    Publication date: April 17, 2008
    Inventors: Shinichi Ito, Tatsuhiko Ema, Kei Hayasaki, Rempei Nakata, Nobuhide Yamada, Katsuya Okumura
  • Patent number: 7327436
    Abstract: A method for evaluating a local flare in an exposure tool, includes: measuring a projection light intensity distribution by transferring a monitor mask pattern onto a semiconductor substrate; calculating a first ratio between an illumination light intensity on the monitor mask pattern and a first projection light intensity calculated based on the monitor mask pattern; calculating a distribution function of a local flare, due to a mask pattern coverage of the monitor mask pattern, based on the first ratio and the projection light intensity distribution; dividing a design mask pattern into a plurality of unit areas; calculating a second ratio between the illumination light intensity on each of the unit areas and a second projection light intensity calculated based on the design mask pattern; and calculating a local flare intensity in each of the unit areas, based on the second ratio and the distribution function.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: February 5, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuya Fukuhara, Satoshi Tanaka, Kenji Chiba, Kei Hayasaki, Kenji Kawano
  • Publication number: 20080003837
    Abstract: In a substrate processing method, a substrate to be processed coated with a film containing a solvent is heated in a single wafer processing manner. The substrate to be processed is heated for a predetermined time by arranging the substrate to be processed in the proximity of a heated heating plate while passing a gas along a top surface of the substrate to be processed at a predetermined flow rate. The substrate to be processed is cooled to a temperature lower than a sublimation temperature of a substance contained in the film containing the solvent while passing a gas heated to a temperature equal to or higher than the sublimation temperature of the substance contained in the film containing the solvent along the top surface of the substrate to be processed.
    Type: Application
    Filed: June 14, 2007
    Publication date: January 3, 2008
    Inventors: Kei Hayasaki, Eishi Shiobara
  • Patent number: 7312018
    Abstract: There is disclosed a film forming method comprising continuously discharging a solution adjusted so as to spread over a substrate by a given amount to the substrate through a discharge port disposed in a nozzle, moving the nozzle and substrate with respect to each other, and holding the supplied solution onto the substrate to form a liquid film, wherein a distance h between the discharge port of the nozzle and the substrate is set to be not less than 2 mm and to be in a range less than 5×10?5 q? (mm) given with respect to a surface tension ? (N/m) of the solution, discharge speed q (m/sec) of the solution continuously discharged through the discharge port, and a constant of 5×10?5 (m·sec/N)
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: December 25, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinichi Ito, Tatsuhiko Ema, Kei Hayasaki, Rempei Nakata, Nobuhide Yamada, Katsuya Okumura
  • Publication number: 20070199579
    Abstract: According to an aspect of the invention, there is provided a substrate treatment method including performing a treatment including intermittently supplying a cleaning fluid to a central area of a treatment substrate while continuously rotating the substrate, and continuously supplying a cleaning fluid to a peripheral area of the substrate, thereby treating the substrate so that a liquid film on the substrate monotonously increases from the central area to the peripheral area along with the rotation of the substrate and so that the central area substantially dries.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 30, 2007
    Inventors: Kei Hayasaki, Eishi Shiobara, Shinichi Ito
  • Publication number: 20070190462
    Abstract: A substrate processing method including while a liquid is supplied between a processing target substrate to be applied with exposure treatment and a projection optical system of an exposure apparatus for carrying out the exposure treatment, prior to providing a resist film on a first main face of the processing target substrate that is provided for liquid immersion exposure for carrying out the exposure treatment at a side to be applied with the exposure treatment, selectively applying at least hydrophobic treatment with respect to a region in a predetermined range from a peripheral rim part of a second main face opposite to the first main face.
    Type: Application
    Filed: January 18, 2007
    Publication date: August 16, 2007
    Inventors: Eishi Shiobara, Kentaro Matsunaga, Daisuke Kawamura, Tomoyuki Takeishi, Kei Hayasaki, Shinichi Ito
  • Publication number: 20070128554
    Abstract: This invention discloses a method to form a resist pattern on a to-be-processed substrate by immersion exposure. A resist film is formed on the central portion of the upper surface of the to-be-processed substrate, on a bevel portion of the upper surface, which is obtained by chamfering the peripheral portion of the to-be-processed substrate, and on the end portion of the to-be-processed substrate. Pattern exposure for forming the latent image of a desired pattern on the resist film is executed while a liquid whose refractive index is higher than that of air exists between the resist film and a constituent element of a projection optical system of an exposure apparatus, which is nearest to the to-be-processed substrate. The resist film formed on the end portion of the to-be-processed substrate is removed by supplying a rinse solution to the end portion of the to-be-processed substrate after executing pattern exposure.
    Type: Application
    Filed: November 16, 2006
    Publication date: June 7, 2007
    Inventors: Daisuke Kawamura, Eishi Shiobara, Tomoyuki Takeishi, Kei Hayasaki, Yasunobu Onishi, Shinichi Ito, Tatsuhiko Higashiki
  • Publication number: 20070037099
    Abstract: A manufacturing method of an alkaline solution, comprising dissolving a gaseous molecule having oxidizing properties or reducing properties in an aqueous alkaline solution.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 15, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Riichiro Takahashi, Kei Hayasaki, Tomoyuki Takeishi, Shinichi Ito
  • Publication number: 20060289431
    Abstract: According to an aspect of the invention, there is provided a single substrate processing method which continuously heats substrates to be processed to which films containing solvents are applied, by use of a heating apparatus having an opening/closing mechanism, including supplying a gas containing a solvent contained in a film of a first substrate to be processed into the heating apparatus in a closed state of the opening/closing mechanism between processing of the first substrate to be processed and processing of a second substrate to be processed.
    Type: Application
    Filed: April 26, 2006
    Publication date: December 28, 2006
    Inventors: Kei Hayasaki, Tsuyoshi Shibata, Koutarou Sho, Shinichi Ito
  • Patent number: 7097960
    Abstract: A manufacturing method of an alkaline solution, comprising dissolving a gaseous molecule having oxidizing properties or reducing properties in an aqueous alkaline solution.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: August 29, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Riichiro Takahashi, Kei Hayasaki, Tomoyuki Takeishi, Shinichi Ito
  • Publication number: 20060110687
    Abstract: A pattern forming method is disclosed, which comprises forming a photo resist film on a substrate, irradiating the photo resist film with an energy ray to form a desired latent image pattern, placing the substrate on a spacer provided on a hot plate, heating the photo resist film by using the hot plate, and developing the photo resist film to form a photo resist pattern, wherein an amount of irradiation of the energy ray is set such that the amount of irradiation of the energy ray in an exposure region in which a distance between a back surface of the substrate and an upper surface of the hot plate is long is larger than the amount of irradiation of the energy ray in an exposure region in which a distance between the back surface of the substrate and the upper surface of the hot plate is short.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 25, 2006
    Inventors: Kenji Kawano, Tsuyoshi Shibata, Kei Hayasaki
  • Publication number: 20060102614
    Abstract: A heating apparatus for a substrate to be processed with a coating film has a chamber with an inner space, a heating plate heating the substrate to be processed in the inner space, and a partition member. The heating plate has a support surface which supports the substrate to be processed within the chamber. The partition member is arranged in the chamber so as to face the support surface. The partition member partitions the inner space into first and second spaces, and has a plurality of pores which allow the first and second spaces to communicate with each other. The support surface of the heating plate is set in the first space. An air stream formation mechanism forming an air stream is arranged in the second space. This mechanism discharges a substance evaporated from the photoresist film.
    Type: Application
    Filed: December 16, 2005
    Publication date: May 18, 2006
    Inventors: Kenji Kawano, Shinichi Ito, Eishi Shiobara, Daisuke Kawamura, Kei Hayasaki
  • Patent number: 7018481
    Abstract: There is disclosed a substrate treating method comprising supplying a treating solution onto a substrate, and continuously discharging a first cleaning solution to the substrate from a first discharge region disposed in a nozzle, while moving the nozzle and substrate with respect to each other in one direction, wherein a length of a direction crossing at right angles to the direction of the first discharge region is equal to or more than a maximum diameter or longest side of the substrate, the nozzle continuously spouts a first gas to the substrate from a first jet region, and the length of a direction crossing at right angles to the direction of the first jet region is equal to or more than the maximum diameter or longest side of the substrate.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 28, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kei Hayasaki, Shinichi Ito, Tatsuhiko Ema, Riichiro Takahashi
  • Patent number: 7005249
    Abstract: A heating apparatus for a substrate to be processed with a coating film has a chamber with an inner space, a heating plate heating the substrate to be processed in the inner space, and a partition member. The heating plate has a support surface which supports the substrate to be processed within the chamber. The partition member is arranged in the chamber so as to face the support surface. The partition member partitions the inner space into first and second spaces, and has a plurality of pores which allow the first and second spaces to communicate with each other. The support surface of the heating plate is set in the first space. An air stream formation mechanism forming an air stream is arranged in the second space. This mechanism discharges a substance evaporated from the photoresist film.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: February 28, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Kawano, Shinichi Ito, Eishi Shiobara, Daisuke Kawamura, Kei Hayasaki
  • Patent number: 7005238
    Abstract: A heating apparatus for a substrate to be processed with a coating film has a chamber with an inner space, a heating plate heating the substrate to be processed in the inner space, and a partition member. The heating plate has a support surface which supports the substrate to be processed within the chamber. The partition member is arranged in the chamber so as to face the support surface. The partition member partitions the inner space into first and second spaces, and has a plurality of pores which allow the first and second spaces to communicate with each other. The support surface of the heating plate is set in the first space. An air stream formation mechanism forming an air stream is arranged in the second space. This mechanism discharges a substance evaporated from the photoresist film.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: February 28, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Kawano, Shinichi Ito, Eishi Shiobara, Daisuke Kawamura, Kei Hayasaki
  • Publication number: 20050275820
    Abstract: A method for evaluating a local flare in an exposure tool, includes: measuring a projection light intensity distribution by transferring a monitor mask pattern onto a semiconductor substrate; calculating a first ratio between an illumination light intensity on the monitor mask pattern and a first projection light intensity calculated based on the monitor mask pattern; calculating a distribution function of a local flare, due to a mask pattern coverage of the monitor mask pattern, based on the first ratio and the projection light intensity distribution; dividing a design mask pattern into a plurality of unit areas; calculating a second ratio between the illumination light intensity on each of the unit areas and a second projection light intensity calculated based on the design mask pattern; and calculating a local flare intensity in each of the unit areas, based on the second ratio and the distribution function.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 15, 2005
    Inventors: Kazuya Fukuhara, Satoshi Tanaka, Kenji Chiba, Kei Hayasaki, Kenji Kawano
  • Publication number: 20050168758
    Abstract: Wavelength dispersion of intensity of light reflected from an evaluation object is measured. A complex refractive index of a substance forming the evaluation object and the environment are prepared. Virtual component ratios comprising a mixture ratio of the substances forming the evaluation object and the environment are prepared. Reflectance wavelength dispersions to the virtual component ratios are calculated. Similar reflectance wavelength dispersions having a small difference with the measured wavelength dispersion are extracted from the reflectance wavelength dispersions. Weighted average to the virtual component ratios used for calculating the similar reflectance wavelength dispersions are calculated to obtain a component ratio of the substance forming the evaluation object and the environment so that weighting is larger when the difference is smaller. A structure of the evaluation object is determined from the calculated component ratio.
    Type: Application
    Filed: January 27, 2005
    Publication date: August 4, 2005
    Inventors: Kei Hayasaki, Toru Mikami, Shinichi Ito, Yuichiro Yamazaki, Toshiya Kotani