Patents by Inventor Hisao Kawaura

Hisao Kawaura 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).

  • Publication number: 20090181535
    Abstract: Scale down design has posed problems in an increase in the resistance value of an interconnection structure and a decrease in the resistance to electromigration and stress migration. The present invention provides an interconnection structure of a high-reliability semiconductor device which has a low resistance value even in the case of scale down design and does not produce electromigration or stress migration, and a method of manufacturing the interconnection structure. Provided are a semiconductor device which has an interconnection or a connection plug, both of which are fabricated from a mixture of a metal and carbon nanotubes, in an interconnection trench or a via hole, both of which are formed on an insulating film on a substrate on which a semiconductor device element is formed, and a method of manufacturing this semiconductor device.
    Type: Application
    Filed: March 18, 2009
    Publication date: July 16, 2009
    Applicant: NEC CORPORATION
    Inventors: Toshitsugu SAKAMOTO, Hisao Kawaura, Toshio Baba, Fumiyuki Nihey, Yukinori Ochiai, Hiroo Hongo
  • Patent number: 7518247
    Abstract: There has been a problem that micromiaturization causes increase of the resistance of wiring structure and degradation of electron migration resistance and stress migration resistance. The present invention provides a wiring structure of a semiconductor device having a low resistance even when the semiconductor device is microminiaturized, free of electron migration and stress migration, and having a high reliability and a method for manufacturing the same. A semiconductor device having a wiring or a connection plug made of a mixture of a metal and carbon nanotubes berried in a wiring groove or a via hole made in an insulating film on a substrate where a semiconductor chip is fabricated, and its manufacturing method are provided.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: April 14, 2009
    Assignee: NEC Corporation
    Inventors: Toshitsugu Sakamoto, Hisao Kawaura, Toshio Baba, Fumiyuki Nihey, Yukinori Ochiai, Hiroo Hongo
  • Publication number: 20090070045
    Abstract: A diagnosis supporting system (10) includes a diagnosis data obtaining unit (20) that obtains diagnosis data in which a movement parameter reflecting a movement speed of each component in separating a sample collected from a test subject into plural components with a chip (12) and a character of each component is in correspondence, a parameter storing unit (34) that stores the movement parameter of a characteristic component showing a state of suffering from a specific disease in correspondence with the disease, a relationship data storing unit (35) that stores relationship data showing a relationship between the character of the characteristic component and a possibility of suffering from a specific disease, a detecting unit (21) that detects the characteristic component from the diagnosis data based on the movement parameter of the characteristic component and the movement parameter of the diagnosis data by making reference to the parameter storing unit (34), and an inference processing unit (22) that infer
    Type: Application
    Filed: October 31, 2008
    Publication date: March 12, 2009
    Applicant: NEC Corporation
    Inventors: Wataru HATTORI, Toru Sano, Masakazu Baba, Kazuhiro Iida, Hisao Kawaura, Noriyuki Iguchi, Hiroko Someya
  • Publication number: 20090045058
    Abstract: With the object of realizing a microchip that allows drying and fixing of a substance that is the object of analysis in a shorter time while maintaining the separation capabilities of a separation operation, a microchip used to implement a separation operation of an analysis sample without contamination or spillage is composed of a substrate and a cover, the substrate being provided with a trench-shaped channel in its upper surface and substrate reservoirs that are linked with this channel, and the cover hermetically sealing the upper surface of the channel, attachable to or detachable from the substrate, and provided with through-holes formed at positions corresponding to the substrate reservoirs, cover reservoirs that are formed on the inner sides of the through-holes for holding liquid that is introduced when the cover is in the state of hermetically sealing the upper surface of the channel, and partitions that are formed on the bottom surfaces of the cover reservoirs.
    Type: Application
    Filed: December 12, 2006
    Publication date: February 19, 2009
    Applicant: NEC Corporation
    Inventors: Machiko Fujita, Hisao Kawaura, Wataru Hattori
  • Publication number: 20090020742
    Abstract: The switching element of the present invention is of a configuration that includes: a first electrode (14) and a second electrode (15) provided separated by a prescribed distance; a solid electrolyte layer (16) provided in contact with the first electrode (14) and the second electrode (15); a third electrode (18) that can supply metal ions and that is provided in contact with the solid electrolyte layer (16); and a metal diffusion prevention film (17) that covers points of the surface of the solid electrolyte layer (16) that are not in contact with the first electrode (14), the second electrode (15) or the third electrode (18). This configuration prevents the adverse effect of metal ions upon other elements.
    Type: Application
    Filed: January 16, 2006
    Publication date: January 22, 2009
    Applicant: NEC CORPORATION
    Inventors: Hiroshi Sunamura, Naoya Inoue, Toshitsugu Sakamoto, Hisao Kawaura
  • Publication number: 20080211096
    Abstract: A switching element is of a configuration that includes: an ion conduction layer (40) for conducting metal ions, a first electrode (21) and a second electrode (31) provided in contact with the ion conduction layer, a third electrode (35) that can supply metal ions to the ion conduction layer, and a diffusion prevention layer (90) provided between the ion conduction layer (40) and the third electrode (35) for preventing the diffusion of metal ions from the third electrode (35) to the ion conduction layer (40). By adopting this configuration, the set state of a switch can be maintained with greater stability.
    Type: Application
    Filed: December 22, 2005
    Publication date: September 4, 2008
    Applicant: NEC CORPORATION
    Inventors: Toshitsugu Sakamoto, Hisao Kawaura
  • Publication number: 20080212259
    Abstract: The switching element of the present invention includes an ion conduction layer (40) capable of conducting metal ions, a first electrode (21) and a second electrode (31) provided in contact with the ion conduction layer (40), and a third electrode (35) provided in contact with the ion conduction layer (40) and capable of supplying metal ions, and is of a configuration in which the area over which the first electrode (21) contacts the ion conduction layer (40) is smaller than the area over which the second electrode (31) contacts the ion conduction layer (40). The use of this configuration decreases the leak current in the OFF state.
    Type: Application
    Filed: December 22, 2005
    Publication date: September 4, 2008
    Applicant: NEC CORPORATION
    Inventors: Toshitsugu Sakamoto, Hisao Kawaura
  • Publication number: 20080070283
    Abstract: A reaction apparatus (10) includes a substrate (12) and a plurality of columnar members (14) formed on the substrate (12). Oligonucleotides for immobilization (16) having sequences complementary to sequences of both ends of a starting template DNA (18) is adhered on the surfaces of the substrate (12) and the columnar members (14). The starting template DNA (18) can be immobilized over the adjacent columnar members (14) by introducing the starting template DNA (18) under the elongated condition. PCR is conducted in such condition.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 20, 2008
    Inventors: Toru Sano, Masakazu Baba, Kazuhiro Ilda, Hisao Kawaura, Noriyuki Iguchi, Wataru Hattori, Hiroko Someya
  • Publication number: 20080036508
    Abstract: The switching element of the present invention includes: an ion conduction layer (4) in which metal ions can move freely; a first electrode (1) that contacts the ion conduction layer (4); and a second electrode (2) that contacts the ion conduction layer (4), that is formed such that the ion conduction layer (4) is interposed between the first electrode (1) and the second electrode (2), and that supplies metal ions to the ion conduction layer (4) or that receives metal ions from the ion conduction layer (4) to cause precipitation of the metal that corresponds to the metal ions. An introduction path (5) composed of the metal and of a prescribed width is further provided on the ion conduction layer (4) for electrically connecting the first electrode (1) and the second electrode (2).
    Type: Application
    Filed: December 22, 2005
    Publication date: February 14, 2008
    Applicant: NEC CORPORATION
    Inventors: Toshitsugu Sakamoto, Hisao Kawaura
  • Publication number: 20070284610
    Abstract: Provided is a switching device including ion conducting part 4 having an ion conductor, first electrode 1 formed at a first gap away from ion conducting part 4, second electrode 2 formed to be in contact with ion conducting part 4 and third electrode 3 formed at a second gap away from ion conducting part 4. Second electrode 2 supplies metal ions to the ion conductor, or receives the metal ions from the ion conductor to precipitate metal corresponding to the metal ions.
    Type: Application
    Filed: December 22, 2005
    Publication date: December 13, 2007
    Applicant: NEC CORPORATION
    Inventors: Hisao Kawaura, Hiroshi Sunamura
  • Publication number: 20070285148
    Abstract: The switching element of the present invention is of a configuration that includes: an ion conduction layer (40) that includes an oxide, a first electrode (21) and a second electrode (31) that are provided in contact with the ion conduction layer (40) and that are connected by the precipitate of metal that is supplied from the outside or for which electrical properties change due to the dissolution of precipitated metal, and a third electrode (35) provided in contact with the ion conduction layer (40) and that can supply metal ions. The use of this configuration allows the switching voltage to be set higher than in the related art.
    Type: Application
    Filed: December 27, 2005
    Publication date: December 13, 2007
    Applicant: NEC CORPORATION
    Inventors: Toshitsugu Sakamoto, Hisao Kawaura, Hiroshi Sunamura, Naoki Banno
  • Patent number: 7274016
    Abstract: A liquid sample (104) introduced in a main flow passage (101) is held in a dam portion (105), and a trigger liquid (106) is filled in a trigger flow passage (102). In this state, the trigger liquid (106) is further introduced at desired timing into the trigger flow passage (102) so that the front end portion of the level of the trigger liquid (106) is advanced and the front end portion is brought to be into contact with the dam portion (105). This causes the liquid sample (104) to move to the right (downstream side) in the figure, resulting in the liquid sample (104) flowing out to the downstream side of the main flow passage (101). This means that the trigger liquid (106) provides priming to realize a liquid switch.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: September 25, 2007
    Assignee: NEC Corporation
    Inventors: Kazuhiro Iida, Masakazu Baba, Hisao Kawaura, Toru Sano, Noriyuki Iguchi, Hiroko Someya, Wataru Hattori, Minoru Asogawa
  • Publication number: 20070102362
    Abstract: In a chip (215), an inlet (217), a main channel (221), a separation region (218), and dispensing channels (222) are formed on a substrate (216). It is structured such that a plurality of the dispensing channels (222) are communicated with the main channel (221), and detection reservoirs (223) are communicated with the respective dispensing channels (222).
    Type: Application
    Filed: September 1, 2004
    Publication date: May 10, 2007
    Inventors: Kazuhiro Iida, Hisao Kawaura, Toru Sano
  • Publication number: 20070048179
    Abstract: A channel formed on a chip is opened without contaminating contents of the channel. Channels (107a) and (107b) provided on a substrate (103) are covered by pressing a lid (113) composed of a resin layer (102) and a plate-like lid (101) to a surface of the substrate (103). A fixing device has a retainer plate (104), which retains the plate-like lid (101) of a chip (112), a board (108) on which the substrate (103) is placed, and a screw (106). When covering the channels (107a) and (107b), the screw (106) is fastened and the lid (113) is pressed to the substrate (103) to be fixed. And, when opening an upper portion of the channels (107a) and (107b), the screw (106) is turned upward and a pressure is released, and the lid (113) is removed from the upper potion of the substrate (103).
    Type: Application
    Filed: September 13, 2004
    Publication date: March 1, 2007
    Inventors: Machiko Fujita, Toru Sano, Kazuhiro Iida, Hisao Kawaura, Wataru Hattori, Masakazu Baba, Noriyuki Iguchi
  • Publication number: 20070026456
    Abstract: A biomolecule is analyzed with high accuracy. A biomolecule is analyzed with high likelihood. A biomolecule as an analysis subject is modified with a marker binding or adsorbing to only its specific portion (S101). Next, the biomolecule modified with the marker is developed on a base plate (S102). The arrangement of the biomolecule on the base plate is detected using a marker (S103). Then, scanning is performed along the shape of the biomolecule present on the detected position (S104). The biomolecule is analyzed based on an information relating to the shape or arrangement of the biomolecule obtained by scanning or an information relating to the arrangement of the marker on the biomolecule (S105).
    Type: Application
    Filed: September 2, 2004
    Publication date: February 1, 2007
    Applicant: NEC CORPORATION
    Inventors: Kenichi Kamijo, Hisao Kawaura, Toru Sano, Yo Tabuse, Hirotaka Minagawa, Kenji Miyazaki
  • Patent number: 7116573
    Abstract: A switching element has an ion conductor capable of conducting metal ions for use in an electrochemical reaction therein, a first electrode and a second electrode which are disposed in contact with said ion conductor and spaced a predetermined distance from each other, and a third electrode disposed in contact with the ion conductor. When a voltage for causing the switching element to transit to an on state is applied to the third electrode, metal is precipitated between the first electrode and the second electrode by metal ions, electrically interconnecting the first electrode and the second electrode. When a voltage for causing the switching element to transit to an off state is applied to the third electrode, the precipitated metal is dissolved to electrically disconnect the first electrode and the second electrode from each other.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: October 3, 2006
    Assignee: NEC Corporation
    Inventors: Toshitsugu Sakamoto, Hisao Kawaura, Hiroshi Sunamura
  • Publication number: 20060214101
    Abstract: After a sample is previously separated into plural components in a channel formed in a microchip (353), the channel is irradiated along a separation direction with a laser beam from a laser oscillator (361) to sequentially ionize each fraction separated in the channel. The ionized fraction is detected by a mass spectrometry unit (363) and analyzed by an analytical result analyzing unit (371). The analytical result is stored in a memory (369) while associated with position information in a driver control unit (367) and information on laser beam irradiation condition in a laser control unit (373), and the analytical result is imaged by an imaging unit (375). The imaged analytical result is displayed on a display (377).
    Type: Application
    Filed: March 15, 2004
    Publication date: September 28, 2006
    Inventors: Katsutoshi Takahashi, Kazuhiro Iida, Masakazu Baba, Noriyuki Iguchi, Toru Sano, Hisao Kawaura, Toshitsugu Sakamoto, Wataru Hattori, Hiroko Someya
  • Publication number: 20060210985
    Abstract: A reaction apparatus (10) includes a substrate (12) and a plurality of columnar members (14) formed on the substrate (12). Oligonucleotides for immobilization (16) having sequences complementary to sequences of both ends of a starting template DNA (18) is adhered on the surfaces of the substrate (12) and the columnar members (14). The starting template DNA (18) can be immobilized over the adjacent columnar members (14) by introducing the starting template DNA (18) under the elongated condition. PCR is conducted in such condition.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 21, 2006
    Inventors: Toru Sano, Masakazu Baba, Kazuhiro Iida, Hisao Kawaura, Noriyuki Iguchi, Wataru Hattori, Hiroko Someya
  • Publication number: 20060177350
    Abstract: A sample-carrier complex (119) is introduced into a sample introducing portion (107), and the sample-carrier complex (119) is moved and deposited on a damming portion (111). The damming portion (111) is heated at a stage in which the predetermined amount of sample-carrier complex (119) is deposited on the damming portion (111). A temperature is increased to a predetermined temperature to break down the sample-carrier complex (119) into a sample (121) and a carrier (123). A voltage is applied between the sample introducing portion (107) and a sample recovery portion (109) to cause the sample (121) to pass through a gap between columnar bodies (115) and move into a second channel (106) to perform predetermined separation and analysis or recovery operation.
    Type: Application
    Filed: March 19, 2004
    Publication date: August 10, 2006
    Inventors: Toru Sano, Masakazu Baba, Kazuhiro Iida, Hisao Kawaura, Noriyuki Iguchi, Wataru Hattori, Hiroko Someya
  • Publication number: 20060172436
    Abstract: A diagnosis supporting system (10) includes a diagnosis data obtaining unit (20) that obtains diagnosis data in which a movement parameter reflecting a movement speed of each component in separating a sample collected from a test subject into plural components with a chip (12) and a character of each component is in correspondence, a parameter storing unit (34) that stores the movement parameter of a characteristic component showing a state of suffering from a specific disease in correspondence with the disease, a relationship data storing unit (35) that stores relationship data showing a relationship between the character of the characteristic component and a possibility of suffering from a specific disease, a detecting unit (21) that detects the characteristic component from the diagnosis data based on the movement parameter of the characteristic component and the movement parameter of the diagnosis data by making reference to the parameter storing unit (34), and an inference processing unit (22) that infer
    Type: Application
    Filed: February 26, 2004
    Publication date: August 3, 2006
    Inventors: Wataru Hattori, Toru Sano, Masakazu Baba, Kazuhiro Iida, Hisao Kawaura, Noriyuki Iguchi, Hiroko Someya