Patents by Inventor Yutaka Kokaze
Yutaka Kokaze 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: 20210222289Abstract: A sputtering apparatus includes a plate-shaped regulator that is provided between a target and a substrate, has an opening corresponding to a magnetic circuit, and covers a portion not corresponding to the magnetic circuit. The regulator covers at least a surface area that is greater than or equal to a half of a surface area of the substrate. The opening has a substantially fan-shaped outline. The opening is arranged so as to substantially coincide with the magnetic circuit when viewed in a direction of a rotation axis line of the target, and the rotation axis line of the target and a rotation axis line of the substrate are arranged substantially parallel to each other.Type: ApplicationFiled: July 4, 2019Publication date: July 22, 2021Inventors: Yutaka KOKAZE, Teruaki IIWAHASHI, Shunsuke SASAKI
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Publication number: 20180204729Abstract: A substrate processing device including an accommodation unit that accommodates a substrate. A gas supply unit supplies plasma generation gas. A plasma supply unit generates plasma from the plasma generation gas supplied by the gas supply unit and supplies the plasma to the accommodation unit. The plasma generation gas is a gas mixture of hydrogen gas and an additive gas or a gas combining the gas mixture and a rare gas. The additive gas includes at least either one of nitrogen atoms and oxygen atoms. The gas supply unit is configured to supply the plasma supply unit with the plasma generation gas so that a flow ratio that is a ratio of a flow of the additive gas relative to a flow of the hydrogen gas is 1/500 or greater.Type: ApplicationFiled: July 28, 2016Publication date: July 19, 2018Inventors: Kazuhiro SONODA, Yutaka KOKAZE, Ryosuke FUKAYA, Katsuaki NAKANO
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Publication number: 20170004995Abstract: Provided is a film forming apparatus in which a thin film can be formed with a good coverage on the inner surface of a hole with high aspect ratio by preventing the negative electric charges from getting concentrated on the substrate edge portion at the time of etching processing. The film forming apparatus is provided with: a vacuum chamber in which a target is disposed; a stage for holding a substrate inside the vacuum chamber; a first electric power for applying predetermined electric power to the target; and a second electric power for applying AC power to the stage. The film forming apparatus performs: film forming processing in which the target is sputtered by applying electric power to the target by the first electric power; and etching processing in which a thin film formed on the substrate is etched by applying AC power to the stage by the second electric power.Type: ApplicationFiled: February 24, 2016Publication date: January 5, 2017Applicant: ULVAC, INC.Inventors: Keiichiro Asakawa, Junichi Hamaguchi, Kazuhiro Sonoda, Yukinobu Numata, Yutaka Kokaze
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Patent number: 9305752Abstract: A method for operating a substrate processing apparatus is provided which can contain generation of particles by generating plasma in a stable manner. After a substrate is disposed in an evacuated vacuum chamber, a rare gas is initially supplied into the vacuum chamber, a voltage is applied to a plasma generating means, and plasma of the rare gas is generated. Subsequently, a reaction gas is supplied into the vacuum chamber, the reaction gas is brought into contact with the plasma of the rare gas, and plasma of the reaction gas is generated. The plasma of the reaction gas is brought into contact with the substrate; and the substrate is processed. Plasma is stably generated not by turning the reaction gas into plasma but by first turning the rare gas into plasma by the plasma generating means, and generation of particles is subsequently suppressed.Type: GrantFiled: March 8, 2012Date of Patent: April 5, 2016Assignee: ULVAC, INC.Inventors: Yutaka Kokaze, Masahisa Ueda, Yoshiaki Yoshida
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Publication number: 20130284701Abstract: [Object] To provide a method of manufacturing a dielectric device and an ashing method that are capable of suppressing the occurrence of resist residue. [Solving Means] In the ashing method, a base material having a surface etched by a plasma of chlorine gas or fluorocarbon gas via a resist mask (6) formed of an organic material is disposed in a chamber, bombardment treatment is performed on the resist mask (6) by using oxygen ions in the chamber, and the resist mask is removed by using oxygen radicals in the chamber. According to the ashing method described above, etching reactants adhering to the surface of the resist mask are physically removed by the bombardment treatment using oxygen ions. Thus, it is possible to suppress the occurrence of resist residue due to the etching reactants and efficiently remove the resist mask from the surface of the base material.Type: ApplicationFiled: December 19, 2011Publication date: October 31, 2013Applicant: ULVAC, INC.Inventors: Yoshiaki Yoshida, Yutaka Kokaze
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Publication number: 20120193323Abstract: A method for operating a substrate processing apparatus is provided which can contain generation of particles by generating plasma in a stable manner. After a substrate is disposed in an evacuated vacuum chamber, a rare gas is initially supplied into the vacuum chamber, a voltage is applied to a plasma generating means, and plasma of the rare gas is generated. Subsequently, a reaction gas is supplied into the vacuum chamber, the reaction gas is brought into contact with the plasma of the rare gas, and plasma of the reaction gas is generated. The plasma of the reaction gas is brought into contact with the substrate; and the substrate is processed. Plasma is stably generated not by turning the reaction gas into plasma but by first turning the rare gas into plasma by the plasma generating means, and generation of particles is subsequently suppressed.Type: ApplicationFiled: March 8, 2012Publication date: August 2, 2012Applicant: ULVAC, INC.Inventors: Yutaka KOKAZE, Masahisa Ueda, Yoshiaki Yoshida
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Publication number: 20120152889Abstract: A method for manufacturing a piezoelectric element, in which a ferroelectric film is processed in an appropriate shape by plasma etching, is provided. A metal mask made of a metal thin film which is hard to be etched by oxygen gas is placed on an object to be processed formed by laminating a lower electrode layer and a ferroelectric film on a substrate in this order. An etching gas containing a mixture gas of the oxygen gas and a reactive gas including fluorine in a chemical structure is turned into plasma and is brought into contact with the metal mask and the object to be processed. An AC voltage is applied to an electrode disposed beneath the object to be processed so that ions in the plasma are caused to enter the object to be processed to perform anisotropic etching on the ferroelectric film.Type: ApplicationFiled: February 3, 2012Publication date: June 21, 2012Applicant: ULVAC. INC.Inventors: Masahisa Ueda, Yoshiaki Yoshida, Yutaka Kokaze
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Patent number: 8133325Abstract: This dry cleaning method for a plasma processing apparatus is a dry cleaning method for a plasma processing apparatus that includes: a vacuum container provided with a dielectric member; a planar electrode and a high-frequency antenna that are provided outside the dielectric member; and a high-frequency power source that supplies high-frequency power to both the high-frequency antenna and the planar electrode, to thereby introduce high-frequency power into the vacuum container via the dielectric member and produce an inductively-coupled plasma, the method comprising the steps of: introducing a gas including fluorine into the vacuum container and also introducing high-frequency power into the vacuum container from the high-frequency power source, to thereby produce an inductively-coupled plasma in the gas including fluorine; and by use of the inductively-coupled plasma, removing a product including at least one of a precious metal and a ferroelectric that is adhered to the dielectric member.Type: GrantFiled: May 28, 2008Date of Patent: March 13, 2012Assignee: ULVAC, Inc.Inventors: Masahisa Ueda, Yutaka Kokaze, Mitsuhiro Endou, Koukou Suu
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Publication number: 20100213170Abstract: An etching method which uses an apparatus having a chamber in which an etching gas is excited by plasma; a table arranged in the chamber which heats a substrate mounted thereon; and a frame member which includes etching-endurable material which is arranged around the table, and which has an upper surface arranged at a position lower than an upper surface of the table, the etching method including: arranging the substrate on the upper surface of the table such that a peripheral part of the substrate projects above the table; and arranging the substrate such that a ratio of a height from the upper surface of the frame member to a bottom surface of the substrate and a projecting length from a side surface of the table to an outer circumference of the substrate is 1.Type: ApplicationFiled: June 19, 2008Publication date: August 26, 2010Applicant: ULVAC, INC.Inventors: Yutaka Kokaze, Mitsuhiro Endou, Masahisa Ueda, Koukou Suu, Toshiya Miyazaki, Toshiyuki Nakamura
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Publication number: 20100151150Abstract: A plasma processing apparatus of the present invention performs on a substrate to be processed, plasma processing with a noble metal material and a ferroelectric material and is provided with a constituent member that is exposed to plasma while being heated. The constituent member is formed with an aluminum alloy of at least 99% aluminum purity.Type: ApplicationFiled: May 14, 2008Publication date: June 17, 2010Applicant: ULVAC, INC.Inventors: Yutaka Kokaze, Masahisa Ueda, Mitsuhiro Endou, Koukou Suu, Toshiya Miyazaki, Genji Sakata, Toshiyuki Nakamura
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Publication number: 20100083981Abstract: This dry cleaning method for a plasma processing apparatus is a dry cleaning method for a plasma processing apparatus that includes: a vacuum container provided with a dielectric member; a planar electrode and a high-frequency antenna that are provided outside the dielectric member; and a high-frequency power source that supplies high-frequency power to both the high-frequency antenna and the planar electrode, to thereby introduce high-frequency power into the vacuum container via the dielectric member and produce an inductively-coupled plasma, the method comprising the steps of: introducing a gas including fluorine into the vacuum container and also introducing high-frequency power into the vacuum container from the high-frequency power source, to thereby produce an inductively-coupled plasma in the gas including fluorine; and by use of the inductively-coupled plasma, removing a product including at least one of a precious metal and a ferroelectric that is adhered to the dielectric member.Type: ApplicationFiled: May 28, 2008Publication date: April 8, 2010Applicant: ULVAC, INC.Inventors: Masahisa Ueda, Yutaka Kokaze, Mitsuhiro Endou, Koukou Suu
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Publication number: 20090275146Abstract: A method for manufacturing a device, includes: (A) forming a first electrode layer on a substrate; (B) forming a ferroelectric layer on the first electrode layer; (C) forming a second electrode layer on the ferroelectric layer; (D) forming a mask having a predetermined pattern on the second electrode layer; (E) forming a memory element by selectively removing the first electrode layer, the ferroelectric layer, and the second electrode layer using the mask; and (F) removing the mask, where at least, the processes (D) and (E), or the processes (E) and (F) are continuously performed under a reduced pressure.Type: ApplicationFiled: April 22, 2009Publication date: November 5, 2009Applicants: ULVAC, Inc., Seiko Epson CorporationInventors: Katsuo TAKANO, Takeshi KOKUBUN, Yutaka KOKAZE, Masahisa UEDA, Mitsuhiro ENDOU, Koukou SUU, Toshiya MIYAZAKI, Toshiyuki NAKAMURA
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Publication number: 20080026539Abstract: An etching technique suitable for miniaturization is provided. An inorganic film is formed on an object to be subjected, the object having a lower electrode film, a dielectric film, and an upper electrode film laminated in that order on a substrate. A patterned organic resist film is disposed on the surface of the inorganic film. The inorganic film, upper electrode film, and the dielectric film are etched using the organic resist film as a mask, and then, the organic resist film is removed with the gas used to etch the lower electrode film; and the lower electrode film is etched using the inorganic film as a mask that has been exposed. Since the film serving as a mask is not re-formed, a fine pattern can be produced with good precision.Type: ApplicationFiled: July 20, 2007Publication date: January 31, 2008Applicant: ULVAC, INC.Inventors: Yutaka Kokaze, Masahisa Ueda, Mitsuhiro Endo, Koukou Suu