Patents by Inventor Yutaka Kouzuma
Yutaka Kouzuma 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).
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Publication number: 20190237302Abstract: In a vacuum processing apparatus including: a vacuum container including a processing chamber therein; a plasma formation chamber; plate members being arranged between the processing chamber and the plasma formation chamber; and a lamp and a window member being arranged around the plate members, in order that a wafer and the plate members are heated by electromagnetic waves from the lamp, a bottom surface and a side surface of the window member is formed of a member transmitting the electromagnetic waves therethrough.Type: ApplicationFiled: April 9, 2019Publication date: August 1, 2019Inventors: Hiroyuki KOBAYASHI, Nobuya MIYOSHI, Kazunori SHINODA, Kenji MAEDA, Yutaka KOUZUMA, Satoshi SAKAl, Masaru IZAWA
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Publication number: 20190198299Abstract: Provided is a plasma processing apparatus including: a processing chamber; a sample stage placed inside the processing chamber; a processing gas supply unit which supplies processing gas into the processing chamber; a high-frequency power supply which supplies an electric field inside the processing chamber; an electrostatic chuck unit disposed on the sample stage in which openings to flow heat transfer gas are formed; a refrigerant supply unit which supplies a refrigerant inside the sample stage; and a control unit, wherein the control unit controls a heat transfer gas supply unit to control the temperature of a wafer depending on a plurality of processes for processing the wafer by switching a flow rate of the heat transfer gas or the type of the heat transfer gas flowing out of the openings between a concave portion formed in the electrostatic chuck unit and the wafer attracted to the electrostatic chuck unit.Type: ApplicationFiled: August 23, 2018Publication date: June 27, 2019Inventors: Tomoyuki WATANABE, Yutaka KOUZUMA, Takumi TANDOU, Kenetsu YOKOGAWA, Hiroshi ITO
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Patent number: 10325781Abstract: A method for etching a titanium nitride film includes a first process of supplying reactive species, which include hydrogen and fluorine, to a base material including a titanium nitride film on at least a part of a surface, and a second process of vacuum-heating the base material to remove the surface reaction layer that is generated on the surface of the titanium nitride film in the first process.Type: GrantFiled: September 8, 2017Date of Patent: June 18, 2019Assignee: Hitachi High-Technologies CorporationInventors: Kazunori Shinoda, Satoshi Sakai, Masaru Izawa, Nobuya Miyoshi, Hiroyuki Kobayashi, Yutaka Kouzuma, Kenji Ishikawa, Masaru Hori
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Patent number: 10290472Abstract: In a vacuum processing apparatus including: a vacuum container including a processing chamber therein; a plasma formation chamber; plate members being arranged between the processing chamber and the plasma formation chamber; and a lamp and a window member being arranged around the plate members, in order that a wafer and the plate members are heated by electromagnetic waves from the lamp, a bottom surface and a side surface of the window member is formed of a member transmitting the electromagnetic waves therethrough.Type: GrantFiled: March 17, 2016Date of Patent: May 14, 2019Assignee: Hitachi High-Technologies CorporationInventors: Hiroyuki Kobayashi, Nobuya Miyoshi, Kazunori Shinoda, Kenji Maeda, Yutaka Kouzuma, Satoshi Sakai, Masaru Izawa
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Patent number: 10141207Abstract: A vacuum processing apparatus includes a processing chamber inside a vacuum vessel, a plasma forming chamber above, a dielectric plate member having multiple through-holes for introducing particles of plasma to the processing chamber between the processing chamber and the plasma forming chamber above a sample stage upper surface in the processing chamber, heating lamp arranged around an outer periphery of the plate member to irradiate an electromagnetic wave to the wafer to heat, and a ring-shaped window member for transmitting the electromagnetic wave from the lamp. The apparatus performs, from the through-holes to the wafer, supplying particles of plasma formed in the plasma forming chamber to form a reaction product, extinguishing the plasma and heating the wafer to desorb the product, and supplying particles, formed in the plasma forming chamber, of the plasma of cleaning gas to the plasma forming chamber, the processing chamber, and the window member.Type: GrantFiled: March 24, 2017Date of Patent: November 27, 2018Assignee: Hitachi High-Technologies CorporationInventors: Yutaka Kouzuma, Hiroyuki Kobayashi, Nobuya Miyoshi, Kenetsu Yokogawa, Tomoyuki Watanabe
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Publication number: 20180122665Abstract: A plasma processing apparatus includes a stage disposed in a processing chamber for mounting a wafer, a plasma generation chamber disposed above the processing chamber for plasma generation using process gas, a plate member having multiple introduction holes, made of a dielectric material, disposed above the stage and between the processing chamber and the plasma generation chamber, and a lamp disposed around the plate member for heating the wafer. The plasma processing apparatus further includes an external IR light source, an emission fiber arranged in the stage, that outputs IR light from the external IR light source toward a wafer bottom, and a light collection fiber for collecting IR light from the wafer. Data obtained using only IR light from the lamp is subtracted from data obtained also using IR light from the external IR light source during heating of the wafer. Thus, a wafer temperature is determined.Type: ApplicationFiled: September 28, 2017Publication date: May 3, 2018Inventors: Hiroyuki KOBAYASHI, Nobuya MIYOSHI, Kazunori SHINODA, Tatehito USUI, Naoyuki KOFUJI, Yutaka KOUZUMA, Tomoyuki WATANABE, Kenetsu YOKOGAWA, Satoshi SAKAI, Masaru IZAWA
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Publication number: 20180090345Abstract: A vacuum processing apparatus includes a processing chamber inside a vacuum vessel, a plasma forming chamber above, a dielectric plate member having multiple through-holes for introducing particles of plasma to the processing chamber between the processing chamber and the plasma forming chamber above a sample stage upper surface in the processing chamber, heating lamp arranged around an outer periphery of the plate member to irradiate an electromagnetic wave to the wafer to heat, and a ring-shaped window member for transmitting the electromagnetic wave from the lamp. The apparatus performs, from the through-holes to the wafer, supplying particles of plasma formed in the plasma forming chamber to form a reaction product, extinguishing the plasma and heating the wafer to desorb the product, and supplying particles, formed in the plasma forming chamber, of the plasma of cleaning gas to the plasma forming chamber, the processing chamber, and the window member.Type: ApplicationFiled: March 24, 2017Publication date: March 29, 2018Inventors: Yutaka KOUZUMA, Hiroyuki KOBAYASHI, Nobuya MIYOSHI, Kenetsu YOKOGAWA, Tomoyuki WATANABE
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Publication number: 20180076051Abstract: A method for etching a titanium nitride film includes a first process of supplying reactive species, which include hydrogen and fluorine, to a base material including a titanium nitride film on at least a part of a surface, and a second process of vacuum-heating the base material to remove the surface reaction layer that is generated on the surface of the titanium nitride film in the first process.Type: ApplicationFiled: September 8, 2017Publication date: March 15, 2018Inventors: Kazunori SHINODA, Satoshi SAKAI, Masaru IZAWA, Nobuya MIYOSHI, Hiroyuki KOBAYASHI, Yutaka KOUZUMA, Kenji ISHIKAWA, Masaru HORI
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Publication number: 20170229290Abstract: In a vacuum processing apparatus including: a vacuum container including a processing chamber therein; a plasma formation chamber; plate members being arranged between the processing chamber and the plasma formation chamber; and a lamp and a window member being arranged around the plate members, in order that a wafer and the plate members are heated by electromagnetic waves from the lamp, a bottom surface and a side surface of the window member is formed of a member transmitting the electromagnetic waves therethrough.Type: ApplicationFiled: March 17, 2016Publication date: August 10, 2017Inventors: Hiroyuki KOBAYASHI, Nobuya MIYOSHI, Kazunori SHINODA, Kenji MAEDA, Yutaka KOUZUMA, Satoshi SAKAl, Masaru IZAWA
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Patent number: 8282848Abstract: A plasma processing apparatus includes: a film which is made of an insulative material and constructs a surface of a sample stage on which a sample is put; a disk-shaped member whose upper surface is joined with the film in a lower portion of the film and which is made of a heat conductive member; heaters which are arranged in the film and arranged in a center portion and regions of its outer peripheral side of the film; coolant channels which are arranged in the disk-shaped member and in which a coolant for cooling the disk-shaped member flows; a plurality of power sources each of which adjusts an electric power to each of the heaters in the plurality of regions; and a controller which adjusts outputs from the plurality of power sources by using a result obtained by presuming a temperature of the upper surface of the disk-shaped member.Type: GrantFiled: February 28, 2008Date of Patent: October 9, 2012Assignee: Hitachi High-Technologies CorporationInventors: Yutaka Ohmoto, Mamoru Yakushiji, Yutaka Kouzuma, Ken Yoshioka, Tsunehiko Tsubone
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Patent number: 8092637Abstract: A manufacturing method includes steps of: placing a film composed of dielectric, on the top surface of a sample stage, forming a film-like heater on the film made of the dielectric, supplying power to the heater to detect a temperature distribution, adjusting a resistance value of the heater on the basis of a result of detection of a temperature distribution so that the temperature distribution has a predetermined value, and then forming the film composed of the dielectric, on the heater.Type: GrantFiled: February 28, 2008Date of Patent: January 10, 2012Assignee: Hitachi High-Technologies CorporationInventors: Yutaka Kouzuma, Yutaka Ohmoto, Mamoru Yakushiji, Ken Yoshioka, Tsunehiko Tsubone
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Publication number: 20090321017Abstract: There is disclosed a plasma processing apparatus wherein a sample placed on the top surface of the sample table located within the processing chamber contained in a vacuum vessel is processed with plasma formed in the processing chamber, comprising a set of ducts cut within the sample table through which cooling medium flows; a film-shaped heater whose heating elements are concentrically embedded in the dielectric film serving as the top surface of the sample table; plural temperature controllers which set up the temperature of the cooling medium flowing through the ducts at different values, respectively; and a control unit which switches over the circulations through the ducts of the cooling medium supplied from the plural temperature controllers.Type: ApplicationFiled: September 8, 2008Publication date: December 31, 2009Inventors: Tsunehiko Tsubone, Hiroho Kitada, Yosuke Sakai, Ken Yoshioka, Yutaka Omoto, Mamoru Yakushiji, Yutaka Kouzuma
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Publication number: 20090218316Abstract: A manufacturing method includes steps of: placing a film composed of dielectric, on the top surface of a sample stage, forming a film-like heater on the film made of the dielectric, supplying power to the heater to detect a temperature distribution, adjusting a resistance value of the heater on the basis of a result of detection of a temperature distribution so that the temperature distribution has a predetermined value, and then forming the film composed of the dielectric, on the heater.Type: ApplicationFiled: February 28, 2008Publication date: September 3, 2009Inventors: Yutaka KOUZUMA, Yutaka Ohmoto, Mamoru Yakushiji, Ken Yoshioka, Tsunehiko Tsubone
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Publication number: 20080280451Abstract: A plasma processing apparatus includes: a film which is made of an insulative material and constructs a surface of a sample stage on which a sample is put; a disk-shaped member whose upper surface is joined with the film in a lower portion of the film and which is made of a heat conductive member; heaters which are arranged in the film and arranged in a center portion and regions of its outer peripheral side of the film; coolant channels which are arranged in the disk-shaped member and in which a coolant for cooling the disk-shaped member flows; a plurality of power sources each of which adjusts an electric power to each of the heaters in the plurality of regions; and a controller which adjusts outputs from the plurality of power sources by using a result obtained by presuming a temperature of the upper surface of the disk-shaped member.Type: ApplicationFiled: February 28, 2008Publication date: November 13, 2008Inventors: Yutaka Ohmoto, Mamoru Yakushiji, Yutaka Kouzuma, Ken Yoshioka, Tsunehiko Tsubone
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Publication number: 20080236614Abstract: A plasma processing apparatus includes a vacuum chamber, a processing chamber housed in the vacuum chamber, and a sample stage located in the processing chamber, for supporting on its upper surface a disk-like sample to be processed, wherein plural disk-like samples are continuously processed with plasma generated in the processing chamber and wherein during the idling time between the successive processes the temperature of the sample stage is adjusted to a predetermined value higher than the temperature at which the samples are processed.Type: ApplicationFiled: February 29, 2008Publication date: October 2, 2008Inventors: Mamoru YAKUSHIJI, Yutaka Ohmoto, Yutaka Kouzuma, Ken Yoshioka
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Publication number: 20080237184Abstract: A plasma processing apparatus comprising a vacuum vessel; a process chamber housed in the vacuum vessel; and a sample stage located in the process chamber, for supporting on its upper surface a disk-like sample to be processed; wherein plural disk-like samples are continuously processed with plasma generated in the process chamber and wherein during the idling time between the successive processes the temperature of the sample stage is adjusted to a predetermined value higher than the temperature at which the samples are processed.Type: ApplicationFiled: August 29, 2007Publication date: October 2, 2008Inventors: MAMORU YAKUSHIJI, Yutaka Ohmoto, Yutaka Kouzuma