Patents by Inventor Tomoyuki Tamura
Tomoyuki Tamura 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: 20160336185Abstract: A plasma processing apparatus includes a plasma processing chamber processing a sample using plasma, a radio frequency power supply supplying radio frequency power for generating the plasma, a sample stage including an electrode electrostatically chucking the sample, mounting the sample thereon, a DC power supply applying DC voltage to the electrode, and a control device shifting the DC voltage previously set, in a negative direction by a first shift amount during discharge of the plasma, shifting the DC voltage having been shifted in the negative direction by the first shift amount, in a positive direction by a second shift amount after the discharge of the plasma. The first shift amount has a value changing potential over a surface of the sample to 0 V, upon shifting the DC voltage in the positive direction. The second shift amount has a value obtained based on a floating potential of the plasma.Type: ApplicationFiled: March 1, 2016Publication date: November 17, 2016Inventors: Masaki ISHIGURO, Masahiro SUMIYA, Shigeru SHIRAYONE, Kazuyuki IKENAGA, Tomoyuki TAMURA
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Patent number: 9437651Abstract: One portion of a first insulator film, which is positioned on a second semiconductor region, and another portion of the first insulator film, which is positioned on a third semiconductor region, are removed, while a first portion of the first insulator film, which is positioned on a first semiconductor region is remained, one portion of a second insulator film, which is positioned on the first semiconductor region, and another portion of the second insulator film, which is positioned on the second semiconductor region, are removed, while a second portion of the second insulator film, which is positioned on the third semiconductor region is remained, and a metal film that covers the first portion, the second semiconductor region, and the second portion, and the second semiconductor region are caused to react with each other and a metal compound layer is formed.Type: GrantFiled: December 2, 2014Date of Patent: September 6, 2016Assignee: Canon Kabushiki KaishaInventors: Hiroaki Naruse, Tomoyuki Tamura, Atsushi Ogino
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Publication number: 20160079043Abstract: A plasma processing apparatus includes a stage in a processing chamber where plasma is formed, a wafer to be processed, and an electrode arranged at an upper part of the stage and supplied with power to electrostatically attract and hold the wafer on the stage, and consecutively processing a plurality of wafers one by one. There are plural processing steps of conducting processing using the plasma under different conditions and there are plural periods when formation of plasma is stopped between the processing steps. An inner wall of the processing chamber is coated before starting the processing of any wafer, and voltage supplied to the electrode is changed according to a balance of respective polarities of particles floating and charged in the processing chamber in each period when formation of plasma is stopped.Type: ApplicationFiled: September 11, 2015Publication date: March 17, 2016Inventors: Hiroyuki KOBAYASHI, Tomoyuki TAMURA, Masaki ISHIGURO, Shigeru SHIRAYONE, Kazuyuki IKENAGA, Makoto NAWATA
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Publication number: 20160027615Abstract: A plasma processing apparatus includes: a plasma processing chamber; a radio frequency power source; a sample stage on which a sample is mounted; an electrode which is arranged inside the sample stage and electrostatically chucks the sample; a DC power source which applies a DC voltage to the electrode; and a control device which controls an output voltage of the DC power source so that an electric potential difference between an electric potential of the sample and an electric potential of an inner wall of the plasma processing chamber is reduced to an electric potential difference within a predetermined range during interruption of plasma discharge.Type: ApplicationFiled: June 30, 2015Publication date: January 28, 2016Inventors: Masaki ISHIGURO, Masahiro SUMIYA, Shigeru SHIRAYONE, Kazuyuki IKENAGA, Tomoyuki TAMURA
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Publication number: 20150155329Abstract: One portion of a first insulator film, which is positioned on a second semiconductor region, and another portion of the first insulator film, which is positioned on a third semiconductor region, are removed, while a first portion of the first insulator film, which is positioned on a first semiconductor region is remained, one portion of a second insulator film, which is positioned on the first semiconductor region, and another portion of the second insulator film, which is positioned on the second semiconductor region, are removed, while a second portion of the second insulator film, which is positioned on the third semiconductor region is remained, and a metal film that covers the first portion, the second semiconductor region, and the second portion, and the second semiconductor region are caused to react with each other and a metal compound layer is formed.Type: ApplicationFiled: December 2, 2014Publication date: June 4, 2015Inventors: Hiroaki Naruse, Tomoyuki Tamura, Atsushi Ogino
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Patent number: 8569177Abstract: A plasma processing apparatus is provided which includes an inert gas supply route connected to a process gas supply piping which supplies a process gas into a processing chamber in a vacuum vessel, a valve which opens or closes the inert gas supply route, and an adjuster which adjusts a flow rate of the inert gas. When processing of a sample is complete, an inert gas is supplied into the process gas supply piping so that a pressure in the process gas supply piping is maintained at a pressure higher than a pressure at which a compound of the process gas and a material of an inner wall of the process gas supply piping vaporizes.Type: GrantFiled: August 9, 2012Date of Patent: October 29, 2013Assignee: Hitachi High-Technologies CorporationInventors: Tomohiro Ohashi, Akitaka Makino, Hiroho Kitada, Muneo Furuse, Tomoyuki Tamura
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Patent number: 8564191Abstract: A light emitting substrate configured to enhance luminance of an image display apparatus is disclosed. The light emitting substrate includes a transparent substrate, a photonic crystal structure, a transparent anode, a light emitting layer having a diffuse reflectance of 0.04% or less and having a side reflecting member at a side thereof. The photonic crystal structure, the transparent anode, and the light emitting layer are successively laminated in this order on the transparent substrate. The light emitting substrate satisfies the following Condition 1 or Condition 2: Condition 1: 95?c, and 40?a<100 Condition 2: 85?c<95, and 80?a<100 where a is a relative area of the photonic crystal structure to that of the light emitting layer, and c is a reflectance of the side reflecting member.Type: GrantFiled: June 3, 2011Date of Patent: October 22, 2013Assignee: Canon Kabushiki KaishaInventors: Tomoyuki Ikegami, Tatsundo Kawai, Tomoyuki Tamura
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Publication number: 20130189800Abstract: A plasma processing apparatus is provided which includes an inert gas supply route connected to a process gas supply piping which supplies a process gas into a processing chamber in a vacuum vessel, a valve which opens or closes the inert gas supply route, and an adjuster which adjusts a flow rate of the inert gas. When processing of a sample is complete, an inert gas is supplied into the process gas supply piping so that a pressure in the process gas supply piping is maintained at a pressure higher than a pressure at which a compound of the process gas and a material of an inner wall of the process gas supply piping vaporizes.Type: ApplicationFiled: August 9, 2012Publication date: July 25, 2013Inventors: Tomohiro OHASHI, Akitaka Makino, Hiroho Kitada, Muneo Furuse, Tomoyuki Tamura
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Patent number: 8487415Abstract: The present invention provides a rectifier element that has a titanium oxide layer interposed between first and second electrodes containing a transition metal with an electronegativity larger than that of Ti, wherein, in the titanium oxide layer, only the interface on the side facing any one of the electrodes has a stoichiometric composition, and wherein the average composition of the whole layer is represented by the formula TiOx (wherein x satisfies the relationship 1.6?x<2), and wherein the rectifying characteristics can be reversed by applying a reverse electrical signal that exceeds the critical reverse electric power between the first and second electrodes in an opposite direction. The present invention also provides a process for producing a rectifier element, which includes the steps of depositing a first electrode that contains a transition metal with an electronegativity larger than that of Ti on a substrate; depositing a layer of titanium oxide (TiOx, wherein x satisfies the relationship 1.Type: GrantFiled: October 30, 2008Date of Patent: July 16, 2013Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Hisashi Shima, Hiroyuki Akinaga, Shoji Ishibashi, Tomoyuki Tamura
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Publication number: 20120187595Abstract: An extrusion molding die is provided which produces a tube that contains a portion in which the cross-sectional area ratio of an inner layer and outer layer in axial cross-section continuously varies, wherein said cross-sectional area ratio can be changed in a short time. The extrusion molding die 50 moves a second inner layer mandrel 54 in the axial direction and changes the flow passage volume of an inner layer resin flow passage 62a in accordance with changes in supply quantity of an inner layer forming resin.Type: ApplicationFiled: January 24, 2012Publication date: July 26, 2012Applicant: TYCO HEALTHCARE GROUP LPInventors: Atsushi Ohigawa, Tomoyuki Tamura, Shinichiro Yokota
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Patent number: 8186300Abstract: A plasma processing apparatus for processing a surface of a to-be-processed substrate includes a processing chamber, a first electrode provided in the processing chamber, a second electrode arranged in opposition to the first electrode, a main power source for supplying the first or second electrode with power for generating a plasma, a biasing power source for supplying the second or first electrode with biasing power, a gas supplying unit for supplying a processing gas into the processing chamber and a control unit for controlling the main power source, the biasing power source and the gas supplying unit. The control unit performs a control such that, during a time of transition from a stationary state of plasma, in which a plasma processing is to be carried out, to a plasma quenching, an output of the main power source is kept not larger than an output of the biasing power source.Type: GrantFiled: February 12, 2009Date of Patent: May 29, 2012Assignee: Hitachi High-Technologies CorporationInventors: Takamasa Ichino, Ryoji Nishio, Tomoyuki Tamura, Shinji Obama
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Patent number: 8163652Abstract: A plasma processing method using plasma includes steps of applying current to a coil and introducing gas into a processing chamber, applying a bias power that does not generate plasma, applying a source power to generate plasma so that a plasma density distribution is high above an outer circumference of a semiconductor wafer and low above a center of the semiconductor wafer, and forming a shape of a sheath layer having a positive ion space charge directly above the semiconductor wafer so as to be convex in an upper direction from the semiconductor wafer, thereby eliminating foreign particles trapped in a boundary of the sheath layer having a positive ion space charge directly above the semiconductor wafer, generating plasma for processing the semiconductor wafer under a condition different from the conditions of the previous steps.Type: GrantFiled: August 27, 2008Date of Patent: April 24, 2012Assignee: Hitachi High-Technologies CorporationInventors: Kenji Maeda, Tomoyuki Tamura, Hiroyuki Kobayashi, Kenetsu Yokogawa, Tadamitsu Kanekiyo
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Publication number: 20110304265Abstract: A light emitting substrate configured to enhance luminance of an image display apparatus is disclosed. The light emitting substrate includes a transparent substrate, a photonic crystal structure, a transparent anode, a light emitting layer having a diffuse reflectance of 0.04% or less and having a side reflecting member at a side thereof. The photonic crystal structure, the transparent anode, and the light emitting layer are successively laminated in this order on the transparent substrate. The light emitting substrate satisfies the following Condition 1 or Condition 2: Condition 1: 95?c, and 40?a<100 Condition 2: 85?c<95, and 80?a<100 where a is a relative area of the photonic crystal structure to that of the light emitting layer, and c is a reflectance of the side reflecting member.Type: ApplicationFiled: June 3, 2011Publication date: December 15, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tomoyuki Ikegami, Tatsundo Kawai, Tomoyuki Tamura
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Publication number: 20110130065Abstract: A method for producing a display is provided, the method comprising a step of adhering a light-transmissive substrate, wherein it is possible to suppress the occurrence of any bubble when the light-transmissive substrate is adhered to a display surface, even when the display surface is large-sized. A plurality of adhesive puddles 3 are formed in an area which is disposed on a first light-transmissive substrate 1 and which is opposed to an adhesive puddle 4 formed on a second light-transmissive substrate 2. The spacing distance between the first and second light-transmissive substrates 1, 2 is narrowed while allowing the first and second light-transmissive substrates 1, 2 to be opposed to one another, and a space between the both is filled with the adhesive.Type: ApplicationFiled: November 24, 2010Publication date: June 2, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tomokazu Andoh, Tomoyuki Tamura, Shintarou Akiba, Haruo Tomono, Kazuya Morohashi
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Publication number: 20100326957Abstract: An electrostatic adsorption layer, an electrode layer, and an insulating layer are provided in a lower portion of a focus ring disposed in an outer periphery of a substrate stage. A high frequency bias is applied to the focus ring by applying a high frequency electric power to the electrode layer. Further, the focus ring is electrostatically chucked to the electrostatic chucking layer and a heat transfer gas is provided between the focus ring and the electrostatic adsorption layer. Thus, the focus ring can be cooled and the temperature of the focus ring is controlled to a predetermined value. With this structure, an etching characteristic at a wafer edge portion can be maintained favorably for a long time. Also, a yield rate at the edge portion can be favorably maintained for a long time, a wet period can be prolonged, and the device operation rate can be improved.Type: ApplicationFiled: August 10, 2009Publication date: December 30, 2010Inventors: Kenji Maeda, Kenetsu Yokogawa, Tomoyuki Tamura, Kazuyuki Hirozane, Takamasa Ichino
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Publication number: 20100319854Abstract: In a plasma processing apparatus conducting surface processing on a sample to be processed with plasma, an upper electrode includes a shower plate having first gas holes bored through it, a conductor plate disposed at back of the shower plate and having second gas holes bored through it, an insulation plate disposed in a center part of the conductor plate and having third gas holes bored through it, and an antenna basic member unit disposed at back of the conductor plate and having a temperature control function unit and a gass distribution unit. First and second minute gaps are formed in a radial direction at an interface between the shower plate and the insulation plate, and at an interface between the insulation plate and the conductor plate, respectively. Centers of the first gas holes are shifted from centers of the third gas holes in a circumference or radial direction.Type: ApplicationFiled: August 25, 2009Publication date: December 23, 2010Inventors: Kenetsu YOKOGAWA, Kenji Maeda, Tomoyuki Tamura
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Publication number: 20100276684Abstract: The present invention provides a rectifier element that has a titanium oxide layer interposed between first and second electrodes containing a transition metal with an electronegativity larger than that of Ti, wherein, in the titanium oxide layer, only the interface on the side facing any one of the electrodes has a stoichiometric composition, and wherein the average composition of the whole layer is represented by the formula TiOx (wherein x satisfies the relationship 1.6?x<2), and wherein the rectifying characteristics can be reversed by applying a reverse electrical signal that exceeds the critical reverse electric power between the first and second electrodes in an opposite direction. The present invention also provides a process for producing a rectifier element, which includes the steps of depositing a first electrode that contains a transition metal with an electronegativity larger than that of Ti on a substrate; depositing a layer of titanium oxide (TiOx, wherein x satisfies the relationship 1.Type: ApplicationFiled: October 30, 2008Publication date: November 4, 2010Inventors: Hisashi Shima, Hiroyuki Akinaga, Shoji Ishibashi, Tomoyuki Tamura
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Patent number: 7791272Abstract: A light-emitting element includes a protective layer in contact with an upper electrode and a circular polarizer in contact with the protective layer.Type: GrantFiled: December 20, 2006Date of Patent: September 7, 2010Assignee: Canon Kabushiki KaishaInventors: Tomoyuki Tamura, Ichiro Kataoka
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Patent number: 7767054Abstract: A plasma processing apparatus includes a vacuum processing chamber, supplying means for introducing a processing gas into the vacuum processing chamber, a mounting electrode in the vacuum processing chamber for mounting a specimen on the mounting electrode, and a pusher pin for raising the specimen placed on the mounting electrode and holding the specimen over the mounting electrode, wherein the mounting electrode includes an inner area for mounting the specimen, an outer area for mounting a focus ring, and a high-frequency power source for supplying electric power to the inner area and the outer area, and wherein high-frequency electric power is applied to the outer area to generate plasma at the outer edge of the backside of the specimen while the specimen is raised with the pusher pin.Type: GrantFiled: August 30, 2005Date of Patent: August 3, 2010Assignee: Hitachi High-Technologies CorporationInventors: Hiroyuki Kobayashi, Masaru Izawa, Kenetsu Yokogawa, Tomoyuki Tamura, Kenji Maeda
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Publication number: 20100163184Abstract: A plasma processing apparatus for processing a surface of a to-be-processed substrate includes a processing chamber, a first electrode provided in the processing chamber, a second electrode arranged in opposition to the first electrode, a main power source for supplying the first or second electrode with power for generating a plasma, a biasing power source for supplying the second or first electrode with biasing power, a gas supplying unit for supplying a processing gas into the processing chamber and a control unit for controlling the main power source, the biasing power source and the gas supplying unit. The control unit performs a control such that, during a time of transition from a stationary state of plasma, in which a plasma processing is to be carried out, to a plasma quenching, an output of the main power source is kept not larger than an output of the biasing power source.Type: ApplicationFiled: February 12, 2009Publication date: July 1, 2010Inventors: Takamasa ICHINO, Ryoji Nishio, Tomoyuki Tamura, Shinji Obama