Patents by Inventor Hiroshi Furuta

Hiroshi Furuta 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: 20110175197
    Abstract: A semiconductor integrated circuit device includes: a plurality of data holding circuits; and a plurality of wells. The plurality of data holding circuits is provided in a substrate of a first conductive type. Each of the plurality of data holding circuits includes a first well of the first conductive type and a second well of a second conductive type different from the first conductive type. The plurality of wells is arranged in two directions for the each of the plurality of data holding circuits.
    Type: Application
    Filed: January 20, 2011
    Publication date: July 21, 2011
    Inventor: Hiroshi FURUTA
  • Patent number: 7981734
    Abstract: A manufacturing method of a thin film transistor includes forming a pair of source/drain electrodes on a substrate, such that the source/drain electrodes define a gap therebetween; forming low resistance conductive thin films, which define a gap therebetween, on the source/drain electrodes; and forming an oxide semiconductor thin film layer on upper surface of the low resistance conductive thin films and in the gap defined between the low resistance conductive thin films so that the oxide semiconductor thin film layer functions as a channel. The low resistance conductive thin films and the oxide semiconductor thin film layer are etched so that side surfaces of the resistance conductive thin films and corresponding side surfaces of the oxide semiconductor thin film layer coincide with each other in a channel width direction of the channel. A gate electrode is mounted over the oxide semiconductor thin film layer.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: July 19, 2011
    Assignees: Kochi Industrial Promotion Center, Casio Computer Co., Ltd.
    Inventors: Mamoru Furuta, Takashi Hirao, Hiroshi Furuta, Tokiyoshi Matsuda, Takahiro Hiramatsu, Hiromitsu Ishii, Hitoshi Hokari, Motohiko Yoshida
  • Patent number: 7977169
    Abstract: A semiconductor device includes an oxide semiconductor thin film layer primarily including zinc oxide having at least one orientation other than (002) orientation. The zinc oxide may have a mixed orientation including (002) orientation and (101) orientation. Alternatively, the zinc oxide may have a mixed orientation including (100) orientation and (101) orientation.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: July 12, 2011
    Assignees: Kochi Industrial Promotion Center, Casio Computer Co., Ltd.
    Inventors: Takashi Hirao, Mamoru Furuta, Hiroshi Furuta, Tokiyoshi Matsuda, Takahiro Hiramatsu
  • Patent number: 7973371
    Abstract: A static random access memory (SRAM) cell includes a first well region of a first conductivity type, a second well region of the first conductivity type, formed in a location different from a location where the first well region is formed, and a third well region of a second conductivity type, which is located between the first well region and the second well region. The memory cell further includes a first tap diffused layer of the first conductivity type for supplying a potential to the first well region, a second tap diffused layer of the first conductivity type for supplying the potential to the second well region, the first and second tap diffused layers being arranged substantially on a diagonal line in the layout of the SRAM cell, and a metal interconnection connected to the first and second tap diffused layers, the metal interconnection passing on the third well region in the SRAM cell.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: July 5, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Hiroshi Furuta, Junji Monden, Ichiro Mizuguchi
  • Patent number: 7940577
    Abstract: The semiconductor integrated circuit device includes a voltage control circuit that generates a control voltage for deactivating a field effect transistor by a gate voltage. The voltage control circuit controls a voltage so as to substantially minimize the leakage current which flows when the field effect transistor is inactive with respect to a device temperature.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: May 10, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Kenjyu Shimogawa, Hiroshi Furuta
  • Publication number: 20110079834
    Abstract: A semiconductor integrated circuit device has: a MISFET having source/drain diffusion layers; first plugs respectively connected to the source/drain diffusion layers; a first interconnection connected to one of the source/drain diffusion layers through the first plug; a second plug electrically connected to the other Of the source/drain diffusion layers through the first plug; a second interconnection connected to the second plug; and a capacitor electrode located above a gate electrode of the MISFET. The first interconnection is formed not above the lower capacitor electrode, while the second interconnection is formed above the upper capacitor electrode. A plug connecting the first interconnection and another interconnection is not provided at an upper location of the one of the source/drain diffusion layers. The first interconnection is not provided at an upper location of the other of the source/drain diffusion layers.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 7, 2011
    Applicant: Renesas Electronics Corporation
    Inventors: Masayuki YANAGISAWA, Hiroshi Furuta, Hiroyasu Kitajima, Katsuya Izumi
  • Patent number: 7897999
    Abstract: A semiconductor integrated circuit device includes a power supply line connected to a power supply terminal, a ground line connected to a ground terminal and a plurality of capacitors connected in parallel between the power supply line and the ground line. The plurality of capacitors include a first capacitor arranged at a first distance from one of the terminals and a second capacitor arranged at a second distance which is larger than the first distance from the one of the terminals, and the first capacitor has a larger area than the second capacitor.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: March 1, 2011
    Assignee: Renesas Electronics Corporation
    Inventor: Hiroshi Furuta
  • Patent number: 7885130
    Abstract: A semiconductor integrated circuit according to an exemplary embodiment of the present invention includes a plurality of memory cells connected to one word line; a plurality of sense amplifier circuits that are connected to the memory cells and divided into an N number of groups; and N number of data inversion processing circuits that respectively receive data read out from the N number of groups of sense amplifier circuits, in which after a sense amplifier circuit of a first group terminates operation, a sense amplifier circuit of a second group different from the first group operates, and each of the data inversion processing circuits performs data inversion processing based on the data read out from each of the groups of sense amplifier circuits, and outputs the data to an output terminal of each of the data inversion processing circuits.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: February 8, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Kenjyu Shimogawa, Hiroshi Furuta
  • Publication number: 20100326959
    Abstract: The invention provides a gas insulated switchgear, and a method for detecting arc damage in a part used in a gas insulated switchgear, which detect directly when an electric contact or a peripheral part reaches an initially set wear limit. An insulating nozzle of a circuit breaker contains a marking substance that releases a gaseous substance inside a circuit breaker gas container as a result of wear by an arc. For ensuring heat resistance and insulation properties, the insulating nozzle is ordinarily formed of a fluororesin, but in the present invention, it is formed of the ordinarily used fluororesin having uniformly mixed therein, as the marking substance, a chlorine-containing resin which has excellent heat resistance and insulation properties such as polyvinylidene chloride.
    Type: Application
    Filed: September 13, 2010
    Publication date: December 30, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yukio Kanazawa, Masahiro Hanai, Hiroshi Furuta
  • Publication number: 20100320539
    Abstract: A semiconductor device has an SOI (Silicon On Insulator) structure and comprising a P-channel FET and an N-channel FET which are formed on an insulating film. The semiconductor device includes: at least two of first, second, third and fourth PN-junction elements. The first PN-junction element is formed from a P-type semiconductor layer and an N-type semiconductor layer having the same impurity concentrations as those of source/drain regions of the P-channel FET and the N-channel FET, respectively. The second PN-junction element is formed from a P-type semiconductor layer and an N-type semiconductor layer having the same impurity concentrations as those of the source/drain region and a channel region in the P-channel FET, respectively. The third PN-junction element is formed from a P-type semiconductor layer and an N-type semiconductor layer having the same impurity concentrations as those of a channel region and the source/drain region in the N-channel FET, respectively.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 23, 2010
    Applicant: NEC Electronics Corporation
    Inventor: Hiroshi Furuta
  • Patent number: 7816924
    Abstract: The invention provides a gas insulated switchgear, and a method for detecting arc damage in a part used in a gas insulated switchgear, which detect directly when an electric contact or a peripheral part reaches an initially set wear limit. An insulating nozzle of a circuit breaker contains a marking substance that releases a gaseous substance inside a circuit breaker gas container as a result of wear by an arc. For ensuring heat resistance and insulation properties, the insulating nozzle is ordinarily formed of a fluororesin, but in the present invention, it is formed of the ordinarily used fluororesin having uniformly mixed therein, as the marking substance, a chlorine-containing resin which has excellent heat resistance and insulation properties such as polyvinylidene chloride.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: October 19, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yukio Kanazawa, Masahiro Hanai, Hiroshi Furuta
  • Publication number: 20100252911
    Abstract: A semiconductor integrated circuit device includes a power supply line connected to a power supply terminal, a ground line connected to a ground terminal and a plurality of capacitors connected in parallel between the power supply line and the ground line. The plurality of capacitors include a first capacitor arranged at a first distance from one of the terminals and a second capacitor arranged at a second distance which is larger than the first distance from the one of the terminals, and the first capacitor has a larger area than the second capacitor.
    Type: Application
    Filed: June 17, 2010
    Publication date: October 7, 2010
    Inventor: Hiroshi FURUTA
  • Patent number: 7808056
    Abstract: A semiconductor integrated circuit device includes a first field-effect transistor and a second field-effect transistor, each of the first field-effect transistor and the second field-effect transistor having a gate electrode formed as a ring shape, a drain diffusion layer formed inside the gate electrode and a source diffusion layer formed outside the gate electrode and a substrate potential diffusion layer or a well potential diffusion layer disposed to contact each of the source diffusion layers of the first and the second field-effect transistors of the same conductivity type, the substrate potential diffusion layer or the well potential diffusion layer being formed with a semiconductor of a different conductivity type from the source diffusion layer.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: October 5, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Hiroshi Furuta, Junji Monden, Shouzou Uchida, Muneaki Matsushige
  • Publication number: 20100213520
    Abstract: Provided is a semiconductor integrated circuit device including a capacitor element with an improved TDDB life. A semiconductor integrated circuit device (1) includes: a first electrode (4) including a first semiconductor layer which protrudes with respect to a plane of a substrate; a side surface insulating film (5) formed on at least a part of a side surface of the first electrode (4); an upper surface insulating film (6) formed on the first electrode (4) and the side surface insulating film (5); and a second electrode (7) which covers the side surface insulating film (5) and the upper surface insulating film (6). The first electrode (4), the side surface insulating film (5), and the second electrode (7) constitute a capacitor element. A thickness of the upper surface insulating film (6) between the first electrode (4) and the second electrode (7) is larger than a thickness of the side surface insulating film (5) between the first electrode (4) and the second electrode (7).
    Type: Application
    Filed: February 3, 2010
    Publication date: August 26, 2010
    Applicant: NEC Electronics Corporation
    Inventors: Hiroshi Furuta, Takayuki Shirai, Shunsaku Naga
  • Patent number: 7772070
    Abstract: A semiconductor integrated circuit device according to an embodiment of the present invention includes a functional circuit region including a functional circuit, a dummy region formed in a region other than the functional circuit region, and plural dummy MOSFETs formed in a dummy region and having a dummy gate electrode on a dummy diffusion layer, the plural dummy MOSFETs being arranged such that date rates of the dummy diffusion layer and dummy gate electrode are kept constant in a predetermined section.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: August 10, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Hiroyasu Kitajima, Hiroshi Furuta, Toshikatsu Jinbo
  • Patent number: 7743289
    Abstract: A first mathematical expression indicating a dependence of SER on an information storage node diffusion layer area at the same information storage node voltage Vn is derived with a use of a result of measuring a relationship between SER and the information storage node diffusion layer area of a storage circuit or an information holding circuit composed of MISFET using a plurality of information storage node voltages Vn as a parameter. Then, a second mathematical expression is derived from the measurement result by substituting a relationship indicating a dependence of SER on an information storage node voltage at the same information storage node diffusion layer area Sc into the first mathematical expression. SER can be calculated by substituting a desired information storage node diffusion layer area and a desired information storage node voltage of a storage circuit or an information holding circuit into the second mathematical expression.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: June 22, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Hiroshi Furuta, Junji Monden, Ichiro Mizuguchi
  • Patent number: 7719879
    Abstract: A semiconductor integrated circuit includes a word line extending along a first direction, a first and a second N-well regions, a P-well region disposed between the first and the second N-well regions, a memory cell having a first, second, third, and fourth PMOS transistors, and a first and second NMOS transistors, the first and the second PMOS transistors disposed in the first N-well region along a second direction which is different from the first direction, the first and the second NMOS transistors disposed in the P-well region, and the third and the fourth PMOS transistors disposed in the second N-well region along the second direction.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: May 18, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Muneaki Matsushige, Hiroyuki Satake, Hiroshi Furuta, Toshifumi Takahashi, Hideyuki Nakamura
  • Publication number: 20100110814
    Abstract: Provided is a destructive readout semiconductor memory device capable of avoiding concentration of a writeback current, in which a switch circuit (24) is provided between each bit line (21) and each sense amplifier (26). In writeback, the switch circuits are turned on at staggered time points. In readout, the switch circuits are turned on to read memory cell data to the sense amplifiers while the sense amplifiers are turned off, and the switch circuits are then turned off once. After that, the sense amplifiers are turned on to amplify the read data. The switch circuits are subsequently divided into groups and turned on again to write back the data amplified by the sense amplifiers to the memory cells. The switch circuits are divided into groups to be turned on at staggered time points during the writeback, to thereby avoid concentration of the writeback current in one time period.
    Type: Application
    Filed: November 3, 2009
    Publication date: May 6, 2010
    Inventors: Kenjiyu Shimogawa, Hiroshi Furuta, Shunsaku Naga, Takayuki Shirai
  • Publication number: 20100034039
    Abstract: A semiconductor integrated circuit has K (K is a natural number of 2 or more) number of memory cells coupled to a same word line, and multiple sense amplifier circuits coupled to the memory cells. The multiple sense amplifier circuits are divided into N (N is a natural number of 2 or more) number of groups. Among the N number of groups, after a first group of sense amplifier circuits is activated and carrying out a predetermined read-out operation, a second group of the sense amplifier circuits is activated and the predetermined read-out operation is carried out, and an Nth group of the sense amplifier circuits is activated sequentially to carry out the predetermined read-out operation.
    Type: Application
    Filed: July 13, 2009
    Publication date: February 11, 2010
    Inventors: Kenjyu Shimogawa, Hiroshi Furuta
  • Patent number: RE41880
    Abstract: A semiconductor memory device includes (a) a plurality of reference cells, (b) a plurality of memory cells, data stored in a selected reference cell among the reference cells being compared to data stored in a selected memory cell among the memory cells, (c) an address transition detector for detecting transition in input of addresses by which a memory cell is selected among the memory cells, and transmitting an address transition detecting signal indicative of the detected transition, (d) a counter for counting the address transition detecting signals, and (e) a reference cell decoder for selecting a reference cell among the reference cells in accordance with an output transmitted from the counter.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: October 26, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Kiyokazu Hashimoto, Hiroshi Furuta