Patents by Inventor Atsushi Shigeta

Atsushi Shigeta 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: 11942495
    Abstract: A semiconductor device includes a semiconductor chip, a circuit board, a heat releasing plate, an adhesive member, and a conductive member. The circuit board transmits a signal of the semiconductor chip. The heat releasing plate has the semiconductor chip disposed thereon, and has an opening in a region on the outer side of a semiconductor chip placement region that is a region in which the semiconductor chip is disposed. The adhesive member is disposed in a region on the outer side of the opening on a different surface of the heat releasing plate from the surface on which the semiconductor chip is disposed, and bonds the circuit board and the heat releasing plate to each other. The conductive member connects the semiconductor chip and the circuit board to each other via the opening.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: March 26, 2024
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Daisuke Chino, Hiroyuki Shigeta, Shigekazu Ishii, Koyo Hosokawa, Hirohisa Yasukawa, Mitsuhito Kanatake, Kosuke Hareyama, Yutaka Ootaki, Kiyohisa Sakai, Atsushi Tsukada, Hirotaka Kobayashi, Ninao Sato, Yuki Yamane
  • Patent number: 10207390
    Abstract: A processing end point detection method detects a timing of a processing end point (e.g., polishing stop, changing of polishing conditions) by calculating a characteristic value of a surface of a workpiece (an object of polishing) such as a substrate. This method includes producing a spectral waveform indicating a relationship between reflection intensities and wavelengths at a processing end point, with use of a reference workpiece or simulation calculation, based on the spectral waveform, selecting wavelengths of a local maximum value and a local minimum value of the reflection intensities, calculating the characteristic value with respect to a surface, to be processed, from reflection intensities at the selected wavelengths, setting a distinctive point of time variation of the characteristic value at a processing end point of the workpiece as the processing end point, and detecting the processing end point of the workpiece by detecting the distinctive point during processing of the workpiece.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: February 19, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Noburu Shimizu, Shinro Ohta, Koji Maruyama, Yoichi Kobayashi, Ryuichiro Mitani, Shunsuke Nakai, Atsushi Shigeta
  • Patent number: 8777694
    Abstract: Method and apparatus for detecting an accurate polishing endpoint of a substrate based on a change in polishing rate are provided. The method includes: applying a light to the surface of the substrate and receiving a reflected light from the substrate; obtaining a plurality of spectral profiles at predetermined time intervals, each spectral profile indicating reflection intensity at each wavelength of the reflected light; selecting at least one pair of spectral profiles, including a latest spectral profile, from the plurality of spectral profiles obtained; calculating a difference in the reflection intensity at a predetermined wavelength between the spectral profiles selected; determining an amount of change in the reflection intensity from the difference; and determining a polishing endpoint based on the amount of change.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 15, 2014
    Assignees: Ebara Corporation, Kabushiki Kaisha Toshiba
    Inventors: Shinrou Ohta, Atsushi Shigeta
  • Patent number: 8696924
    Abstract: A polishing apparatus is used for polishing and planarizing a substrate such as a semiconductor wafer on which a conductive film such as a copper (Cu) layer or a tungsten (W) layer is formed. The polishing apparatus includes a polishing table having a polishing surface, a motor for rotating the polishing table, a top ring for holding a substrate and pressing the substrate against the polishing surface, a film thickness measuring sensor disposed in the polishing table for scanning a surface of the substrate, and a computing device for processing signals of the film thickness measuring sensor to compute a film thickness of the substrate.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: April 15, 2014
    Assignees: Ebara Corporation, Kabushiki Kaisha Toshiba
    Inventors: Mitsuo Tada, Taro Takahashi, Motohiro Niijima, Shinro Ohta, Atsushi Shigeta
  • Patent number: 8685857
    Abstract: There is disclosed a chemical mechanical polishing method of an organic film comprising forming the organic film above a semiconductor substrate, contacting the organic film formed above the semiconductor substrate with a polishing pad attached to a turntable, and dropping a slurry onto the polishing pad to polish the organic film, the slurry being selected from the group consisting of a first slurry and a second slurry, the first slurry comprising a resin particle having a functional group selected from the group consisting of an anionic functional group, a cationic functional group, an amphoteric functional group and a nonionic functional group, and having a primary particle diameter ranging from 0.05 to 5 ?m, the first slurry having a pH ranging from 2 to 8, and the second slurry comprising a resin particle having a primary particle diameter ranging from 0.05 to 5 ?m, and a surfactant having a hydrophilic moiety.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: April 1, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yukiteru Matsui, Gaku Minamihaba, Yoshikuni Tateyama, Hiroyuki Yano, Atsushi Shigeta
  • Publication number: 20140024294
    Abstract: Method and apparatus for detecting an accurate polishing endpoint of a substrate based on a change in polishing rate are provided. The method includes: applying a light to the surface of the substrate and receiving a reflected light from the substrate; obtaining a plurality of spectral profiles at predetermined time intervals, each spectral profile indicating reflection intensity at each wavelength of the reflected light; selecting at least one pair of spectral profiles, including a latest spectral profile, from the plurality of spectral profiles obtained; calculating a difference in the reflection intensity at a predetermined wavelength between the spectral profiles selected; determining an amount of change in the reflection intensity from the difference; and determining a polishing endpoint based on the amount of change.
    Type: Application
    Filed: September 25, 2013
    Publication date: January 23, 2014
    Applicants: KABUSHIKI KAISHA TOSHIBA, EBARA CORPORATION
    Inventors: Shinrou OHTA, Atsushi SHIGETA
  • Publication number: 20140004773
    Abstract: A processing end point detection method detects a timing of a processing end point (e.g., polishing stop, changing of polishing conditions) by calculating a characteristic value of a surface of a workpiece (an object of polishing) such as a substrate. This method includes producing a spectral waveform indicating a relationship between reflection intensities and wavelengths at a processing end point, with use of a reference workpiece or simulation calculation, based on the spectral waveform, selecting wavelengths of a local maximum value and a local minimum value of the reflection intensities, calculating the characteristic value with respect to a surface, to be processed, from reflection intensities at the selected wavelengths, setting a distinctive point of time variation of the characteristic value at a processing end point of the workpiece as the processing end point, and detecting the processing end point of the workpiece by detecting the distinctive point during processing of the workpiece.
    Type: Application
    Filed: September 4, 2013
    Publication date: January 2, 2014
    Applicants: KABUSHIKI KAISHA TOSHIBA, EBARA CORPORATION
    Inventors: Noburu SHIMIZU, Shinro OHTA, Koji MARUYAMA, Yoichi KOBAYASHI, Ryuichiro MITANI, Shunsuke NAKAI, Atsushi SHIGETA
  • Patent number: 8568199
    Abstract: Method and apparatus for detecting an accurate polishing endpoint of a substrate based on a change in polishing rate are provided. The method includes: applying a light to the surface of the substrate and receiving a reflected light from the substrate; obtaining a plurality of spectral profiles at predetermined time intervals, each spectral profile indicating reflection intensity at each wavelength of the reflected light; selecting at least one pair of spectral profiles, including a latest spectral profile, from the plurality of spectral profiles obtained; calculating a difference in the reflection intensity at a predetermined wavelength between the spectral profiles selected; determining an amount of change in the reflection intensity from the difference; and determining a polishing endpoint based on the amount of change.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: October 29, 2013
    Assignees: Ebara Corporation, Kabushiki Kaisha Toshiba
    Inventors: Shinrou Ohta, Atsushi Shigeta
  • Patent number: 8554356
    Abstract: A processing end point detection method detects a timing of a processing end point (e.g., polishing stop, changing of polishing conditions) by calculating a characteristic value of a surface of a workpiece (an object of polishing) such as a substrate. This method includes producing a spectral waveform indicating a relationship between reflection intensities and wavelengths at a processing end point, with use of a reference workpiece or simulation calculation, based on the spectral waveform, selecting wavelengths of a local maximum value and a local minimum value of the reflection intensities, calculating the characteristic value with respect to a surface, to be processed, from reflection intensities at the selected wavelengths, setting a distinctive point of time variation of the characteristic value at a processing end point of the workpiece as the processing end point, and detecting the processing end point of the workpiece by detecting the distinctive point during processing of the workpiece.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: October 8, 2013
    Assignees: Ebara Corporation, Kabushiki Kaisha Toshiba
    Inventors: Noburu Shimizu, Shinro Ohta, Koji Maruyama, Yoichi Kobayashi, Ryuichiro Mitani, Shunsuke Nakai, Atsushi Shigeta
  • Patent number: 8506362
    Abstract: A polishing apparatus includes a substrate holder configured to hold and rotate a substrate, a press pad configured to press a polishing tape having a polishing surface against a bevel portion of the substrate held by the substrate holder, and a feeding mechanism configured to cause the polishing tape to travel in its longitudinal direction. The press pad includes a hard member having a pressing surface for pressing the bevel portion of the substrate through the polishing tape, and at least one elastic member for pressing the hard member against the bevel portion of the substrate through the belt-shaped polishing tool.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: August 13, 2013
    Assignees: Kabushiki Kaisha Toshiba, Ebara Corporation
    Inventors: Dai Fukushima, Atsushi Shigeta, Tamami Takahashi, Kenya Ito, Masaya Seki, Hiroaki Kusa
  • Patent number: 8388409
    Abstract: A substrate polishing apparatus is provided for preventing excessive polishing and insufficient polishing, and enabling a quantitative setting of an additional polishing time. The substrate polishing apparatus comprises a mechanism for polishing a substrate to be polished; a film thickness measuring device for measuring the thickness of a thin film deposited on the substrate; an interface for entering a target thickness for the polished thin film; a storage area for preserving past polishing results; and a processing unit for calculating a polishing time and a polishing rate. The substrate polishing apparatus builds an additional polishing database for storing data acquired from the result of additional polishing in the storage area.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: March 5, 2013
    Assignees: Ebara Corporation, Kabushiki Kaisha Toshiba
    Inventors: Hidetaka Nakao, Yasumitsu Kawabata, Yoshifumi Katsumata, Naoki Ozawa, Tatsuya Sasaki, Atsushi Shigeta
  • Publication number: 20120202348
    Abstract: A method for fabricating a semiconductor device according to an embodiment, includes forming a plurality of films above a substrate in a same chamber without transferring the substrate out of the chamber, forming a target film to be polished above the plurality of films, and polishing the target film by a chemical mechanical polishing (CMP) technique using a film on a front side among the plurality of films as a polishing stopper.
    Type: Application
    Filed: September 21, 2011
    Publication date: August 9, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mio TOMIYAMA, Jun TAKAYASU, Katsuyasu SHIBA, Atsushi SHIGETA
  • Patent number: 8152598
    Abstract: A substrate treating method includes rotating a substrate in a circumferential direction and polishing a peripheral portion of the substrate by pressing a polishing member to it using a pressing mechanism having a pressing pad. An angle of at least a part of the pressing pad with respect to an axial direction, in which the pressing mechanism makes the pressing pad press the peripheral portion of the substrate, is changed by an angle displacement mechanism which actively displaces the angle so that the polishing is performed depending on a surface to be polished in the peripheral portion.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: April 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Fukushima, Atsushi Shigeta
  • Patent number: 8119517
    Abstract: A chemical mechanical polishing method comprises polishing an organic film using a slurry including polymer particles having a surface functional group and a water-soluble polymer.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: February 21, 2012
    Assignees: JSR Corporation, Kabushiki Kaisha Toshiba
    Inventors: Hirotaka Shida, Yukiteru Matsui, Atsushi Shigeta, Shinichi Hirasawa, Hirokazu Kato, Masako Kinoshita, Takeshi Nishioka, Hiroyuki Yano
  • Patent number: 8114776
    Abstract: In a method of manufacturing a semiconductor device for planarizing a silicon oxide film with chemical mechanical polishing using a silicon film formed on a semiconductor substrate as a stopper film, a surface modification film for hydrophilizing the surface of the silicon film is formed on an upper layer of the polysilicon film, and slurry for the chemical mechanical polishing contains cerium oxide particles, a surface active agent, and resin particles having a cationic or anionic functional group.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: February 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Eda, Yukiteru Matsui, Atsushi Shigeta, Takatoshi Ono, Satoko Seta
  • Patent number: 8084364
    Abstract: A method of fabricating a semiconductor device, includes forming an amorphous silicon film above a semiconductor substrate, partially removing the amorphous silicon film and partially removing the semiconductor substrate, thereby forming an element isolation trench in a surface of the semiconductor substrate, forming an insulating film above the amorphous silicon film so that the element isolation trench is filled with the insulating film, polishing the insulating film by a chemical-mechanical polishing method with the amorphous silicon film serving as a stopper, thereby planarizing an upper surface of the insulating film, and thermally-treating the amorphous silicon film, thereby converting the amorphous silicon film to a polysilicon film after polishing the insulating film.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: December 27, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shunsuke Doi, Atsushi Shigeta
  • Publication number: 20110081829
    Abstract: Method and apparatus for detecting an accurate polishing endpoint of a substrate based on a change in polishing rate are provided. The method includes: applying a light to the surface of the substrate and receiving a reflected light from the substrate; obtaining a plurality of spectral profiles at predetermined time intervals, each spectral profile indicating reflection intensity at each wavelength of the reflected light; selecting at least one pair of spectral profiles, including a latest spectral profile, from the plurality of spectral profiles obtained; calculating a difference in the reflection intensity at a predetermined wavelength between the spectral profiles selected; determining an amount of change in the reflection intensity from the difference; and determining a polishing endpoint based on the amount of change.
    Type: Application
    Filed: October 5, 2010
    Publication date: April 7, 2011
    Inventors: Shinrou OHTA, Atsushi Shigeta
  • Publication number: 20110076833
    Abstract: In a method of manufacturing a semiconductor device for planarizing a silicon oxide film with chemical mechanical polishing using a silicon film formed on a semiconductor substrate as a stopper film, a surface modification film for hydrophilizing the surface of the silicon film is formed on an upper layer of the polysilicon film, and slurry for the chemical mechanical polishing contains cerium oxide particles, a surface active agent, and resin particles having a cationic or anionic functional group.
    Type: Application
    Filed: May 17, 2010
    Publication date: March 31, 2011
    Inventors: Hajime Eda, Yukiteru Matsui, Atsushi Shigeta, Takatoshi Ono, Satoko Seta
  • Publication number: 20110003537
    Abstract: A polishing apparatus according to the present invention includes a substrate holder (32) configured to hold and rotate a substrate (W), a press pad (50) configured to press a polishing tape (41) having a polishing surface against a bevel portion of the substrate held by the substrate holder, and a feeding mechanism (45) configured to cause the polishing tape to travel in its longitudinal direction. The press pad (50) includes a hard member (51) having a pressing surface (51a) for pressing the bevel portion of the substrate through the polishing tape, and at least one elastic member (53) for pressing the hard member against the bevel portion of the substrate through the belt-shaped polishing tool.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 6, 2011
    Inventors: Dai Fukushima, Atsushi Shigeta, Tamami Takahashi, Kenya Ito, Masaya Seki, Hiroaki Kusa
  • Publication number: 20100255757
    Abstract: A substrate processing method is used to polish a substrate. The substrate processing method includes rotating a substrate 13 by a motor 12, polishing a first surface of a peripheral portion of the substrate 13 by pressing a polishing surface of a polishing mechanism 20 against the first surface, determining a polishing end point of the first surface by monitoring a polished state of the first surface, stopping the polishing according to the determining the polishing end point, determining a polishing time spent for the polishing, determining a polishing time for a second surface of the peripheral portion based on the polishing time of the first surface, and polishing the second surface for the determined polishing time.
    Type: Application
    Filed: June 21, 2010
    Publication date: October 7, 2010
    Inventors: Atsushi SHIGETA, Gen Toyota, Hiroyuki Yano, Kunio Oishi, Kenya Ito, Masayuki Nakanishi, Kenji Yamaguchi