Patents by Inventor Akinobu Teramoto

Akinobu Teramoto 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: 20110222257
    Abstract: A miniaturizable, low-cost highly reliable inverter unit. A control circuit section for controlling operating timing of high breakdown voltage semiconductor elements included in an inverter circuit section and first and second drive and abnormality detection circuit sections for outputting drive signals for driving the high breakdown voltage semiconductor elements according to the operating timing and for feeding back an abnormality of the inverter circuit section to the control circuit section are formed on an SOI substrate as one integrated circuit chip. On the integrated circuit chip, circuit formation areas which differ in reference potential are separated from one another by dielectrics. A plurality of level shifters for transmitting signals exchanged between circuit formation areas separated by the dielectrics are formed.
    Type: Application
    Filed: May 19, 2011
    Publication date: September 15, 2011
    Inventors: Hitoshi SUMIDA, Akinobu Teramoto, Ken-ichi Nonaka, Toshio Naka
  • Publication number: 20110212552
    Abstract: There is provided a wafer on which a plurality of electronic devices and circuits under test are to be formed, where each circuit under test includes a plurality of transistors under measurement provided in electrically parallel, a selecting section which sequentially selects the respective transistors under measurement, and an output section which sequentially outputs the source voltages of the transistors under measurement sequentially selected by the selecting section.
    Type: Application
    Filed: May 5, 2011
    Publication date: September 1, 2011
    Applicant: NATIONAL UNIVERSITY CORPORATION TOHOKU UNIVERSITY
    Inventors: SHIGETOSHI SUGAWA, AKINOBU TERAMOTO
  • Publication number: 20110209567
    Abstract: There is provided a wafer on which a plurality of electronic devices and circuits under test are to be formed, where each circuit under test includes a plurality of transistors under measurement provided in electrically parallel, a selecting section which sequentially selects the respective transistors under measurement, and an output section which sequentially outputs the source voltages of the transistors under measurement sequentially selected by the selecting section.
    Type: Application
    Filed: May 5, 2011
    Publication date: September 1, 2011
    Applicant: NATIONAL UNIVERSITY CORPORATION TOHOKU UNIVERSITY
    Inventors: SHIGETOSHI SUGAWA, AKINOBU TERAMOTO
  • Publication number: 20110198702
    Abstract: A semiconductor device manufacturing method which achieves a contact of a low resistivity is provided. In a state where a first metal layer in contact with a semiconductor is covered with a second metal layer for preventing oxidation, only the first metal layer is silicided to form a silicide layer with no oxygen mixed therein. As a material of the first metal layer, a metal having a work function difference of a predetermined value from the semiconductor is used. As a material of the second metal layer, a metal which does not react with the first metal layer at an annealing temperature is used.
    Type: Application
    Filed: October 23, 2009
    Publication date: August 18, 2011
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Tatsunori Isogai, Hiroaki Tanaka
  • Patent number: 7994063
    Abstract: Disclosed is a method for cleaning a semiconductor substrate that can solve a problem of a conventional cleaning method which should include at least five steps for cleaning a substrate such as a semiconductor substrate. The method for cleaning a semiconductor substrate comprises a first step of cleaning a substrate with ultrapure water containing ozone, a second step of cleaning the substrate with ultrapure water containing a surfactant, and a third step of removing an organic compound derived from the surfactant, with a cleaning liquid containing ultrapure water and 2-propanol. After the third step, plasma of noble gas such as krypton is applied to the substrate to further remove the organic compound derived from the surfactant.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: August 9, 2011
    Assignees: National University Corporation Tohoku University, Stella Chemifa Corporation
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Rui Hasebe, Masayuki Miyashita
  • Patent number: 7975901
    Abstract: A bonding apparatus including a chamber for maintaining an inert gas atmosphere; a first plasma torch for performing a surface treatment on pads and electrodes, the first plasma torch being attached in the chamber, to apply gas plasma to a substrate and a semiconductor chip that is placed inside the chamber; a second plasma torch for performing a surface treatment on an initial ball and/or wire at a tip end of a capillary that is positioned inside the chamber, the second plasma torch being attached in the chamber, to apply gas plasma to the initial ball and/or wire; and a bonding unit for bonding the surface-treated initial ball and/or wire to the surface-treated pads and electrodes in the chamber, thereby cleaning of the surface of the electrodes and pads as well as the wire can be effectively performed.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: July 12, 2011
    Assignees: Shinkawa Ltd., Tohoku University
    Inventors: Toru Maeda, Tetsuya Utano, Akinobu Teramoto
  • Patent number: 7968470
    Abstract: A nitriding process is performed at a process temperature of 500° C. or more by causing microwave-excited high-density plasma of a nitrogen-containing gas to act on silicon in the surface of a target object, inside a process container of a plasma processing apparatus. The plasma is generated by supplying microwaves into the process container from a planar antenna having a plurality of slots.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: June 28, 2011
    Assignees: Tohoku University, Tokyo Electron Limited
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Minoru Honda, Toshio Nakanishi
  • Patent number: 7965097
    Abstract: There is provided a wafer on which a plurality of electronic devices and circuits under test are to be formed, where each circuit under test includes a plurality of transistors under measurement provided in electrically parallel, a selecting section which sequentially selects the respective transistors under measurement, and an output section which sequentially outputs the source voltages of the transistors under measurement sequentially selected by the selecting section.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: June 21, 2011
    Assignee: National University Corporation Tohoku University
    Inventors: Shigetoshi Sugawa, Akinobu Teramoto
  • Patent number: 7960937
    Abstract: A miniaturizable, low-cost highly reliable inverter unit. A control circuit section for controlling operating timing of high breakdown voltage semiconductor elements included in an inverter circuit section and first and second drive and abnormality detection circuit sections for outputting drive signals for driving the high breakdown voltage semiconductor elements according to the operating timing and for feeding back an abnormality of the inverter circuit section to the control circuit section are formed on an SOI substrate as one integrated circuit chip. On the integrated circuit chip, circuit formation areas which differ in reference potential are separated from one another by dielectrics. A plurality of level shifters for transmitting signals exchanged between circuit formation areas separated by the dielectrics are formed.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: June 14, 2011
    Assignees: Fuji Electric Systems Co., Ltd., Sharp Kabushiki Kaisha, Honda Motor Co., Ltd.
    Inventors: Hitoshi Sumida, Akinobu Teramoto, Ken-ichi Nonaka, Toshio Naka
  • Publication number: 20110114708
    Abstract: Metal nanoink (100) for bonding an electrode of a semiconductor die and an electrode of a substrate and/or bonding an electrode of a semiconductor die and an electrode of another semiconductor die by sintering under pressure is produced by injecting oxygen into an organic solvent (105) in the form of oxygen nanobubbles (125) or oxygen bubbles (121) either before or after metal nanoparticles (101) whose surfaces are coated with a dispersant (102) are mixed into the organic solvent (105). Bumps are formed on the electrode of the semiconductor die and the electrode of the substrate by ejecting microdroplets of the metal nanoink (100) onto the electrodes, the semiconductor die is turned upside down and overlapped in alignment over the substrate, and then, the metal nanoparticles of the bumps are sintered under pressure by pressing and heating the bumps between the electrodes. As a result, generation of voids during sintering under pressure is minimized.
    Type: Application
    Filed: July 8, 2009
    Publication date: May 19, 2011
    Applicant: SHINKAWAL LTD
    Inventors: Toru Maeda, Tetsuro Tanikawa, Akinobu Teramoto, Masaaki Oda
  • Publication number: 20110110052
    Abstract: A multilayer wiring board 100 comprises a first wiring region 101 where wirings 103a and insulating layers 104a and 104b are alternately laminated, and a second wiring region 102 where a thickness H2 of an insulating layer 104 is twice or more a thickness H1 of the insulating layer in the first wiring region 101 and a width W2 of a wiring 103b is twice or more a width W1 of the wiring in the first wiring region 101. The first wiring region 101 and the second wiring region 102 are integrally formed on the same board.
    Type: Application
    Filed: May 22, 2009
    Publication date: May 12, 2011
    Inventors: Tadahiro Ohmi, Shigetoshi Sugawa, Hiroshi Imai, Akinobu Teramoto
  • Patent number: 7928518
    Abstract: In a P-channel power MIS field effect transistor formed on a silicon surface having substantially a (110) plane, a gate insulation film is used which provides a gate-to-source breakdown voltage of 10 V or more, and planarizes the silicon surface, or contains Kr, Ar, or Xe.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 19, 2011
    Assignees: Yazaki Corporation
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Hiroshi Akahori, Keiichi Nii, Takanori Watanabe
  • Patent number: 7928018
    Abstract: The application of oxynitriding treatment to electronic appliances involve the problem that N2 ions are formed to thereby damage any oxynitride film. It is intended to provide a method of plasma treatment capable of realizing high-quality oxynitriding and to provide a process for producing an electronic appliance in which use is made of the method of plasma treatment. There is provided a method of plasma treatment, comprising generating plasma with a gas for plasma excitation and introducing a treating gas in the plasma to thereby treat a treatment subject, wherein the treating gas contains nitrous oxide gas, this nitrous oxide gas introduced in a plasma of <2.24 eV electron temperature, so that the generation of ions tending to damage any insulating film is reduced to thereby realize high-quality oxynitriding. Further, there is provided a process for producing an electronic appliance in which use is made of the method of plasma treatment.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: April 19, 2011
    Assignee: Foundation for Advancement of International Science
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Hiroshi Yamauchi, Yukio Hayakawa
  • Publication number: 20110073922
    Abstract: A semiconductor device manufacturing method includes the steps of ion-implanting a p-type or an n-type impurity into a Si layer portion to become a p-type or an n-type contact region of a semiconductor device, forming a metal film for a contact on a surface of the contact region without performing heat treatment for activating implanted ions after the ion-implanting step, and forming a silicide of a metal of the metal film by causing the metal to react with the Si layer portion by heating. It is desired to simultaneously perform the step of forming the silicide and the step of activating the implanted ions by heat treatment after the metal film is formed.
    Type: Application
    Filed: April 17, 2009
    Publication date: March 31, 2011
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Hiroaki Tanaka, Tatsunori Isogai
  • Publication number: 20110062460
    Abstract: An organic EL light emitting element is provided with a conductive transparent electrode 3, a counter electrode 8 opposing the conductive transparent electrode 3, an organic EL light emitting layer 6 provided between the conductive transparent electrode 3 and the counter electrode 8, an insulating protection layer 9 provided to cover at least the organic EL light emitting layer 6, and a heat dissipating layer 11 which is brought into contact with the insulating protection layer 9. The conductive transparent electrode has an ITO film including at least one of Hf, V and Zr at least on the surface part on the side of the organic EL light emitting layer 6, and the insulating protection layer 9 includes a nitride film having a thickness of 100 nm or less.
    Type: Application
    Filed: November 18, 2010
    Publication date: March 17, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Akihiro Morimoto
  • Patent number: 7902595
    Abstract: In one embodiment of the present invention, a power IC device is disclosed containing a power MOS transistor with a low ON resistance and a surface channel MOS transistor with a high operation speed. There is also provided a method of manufacturing such a device. A chip has a surface of which the planar direction is not less than ?8° and not more than +8° off a silicon crystal face. The p-channel trench power MOS transistor includes a trench formed vertically from the surface of the chip, a gate region in the trench, an inversion channel region on a side wall of the trench, a source region in a surface layer of the chip, and a drain region in a back surface layer of the chip. The surface channel MOS transistor has an inversion channel region fabricated so that an inversion channel current flows in a direction not less than ?8° and not more than +8° off the silicon crystal direction.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 8, 2011
    Assignees: Sharp Kabushiki Kaisha, National University Corporation Tohoku University, Yazaki Corporation
    Inventors: Alberto O. Adan, Mitsuhiro Kikuta, Akinobu Teramoto, Tadahiro Ohmi, Hiroo Yabe, Takanori Watanabe
  • Patent number: 7898033
    Abstract: A semiconductor device according to this invention is provided with a MOS transistor of at least one type, wherein the MOS transistor has a semiconductor layer (SOI layer) provided on an SOI substrate and a gate electrode provided on the SOI layer and is normally off by setting the thickness of the SOI layer so that the thickness of a depletion layer caused by a work function difference between the gate electrode and the SOI layer becomes greater than that of the SOI layer.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: March 1, 2011
    Assignees: Tohoku University, Foundation for Advancement of International Science
    Inventors: Tadahiro Ohmi, Akinobu Teramoto
  • Publication number: 20110042725
    Abstract: With inversion-mode transistors, intrinsic-mode transistors, or semiconductor-layer accumulation-layer current controlled accumulation-mode transistors, variation in threshold voltages becomes large in miniaturized generations due to statistical variation in impurity atom concentrations and thus it is difficult to maintain the reliability of an LSI. Provided is a bulk current controlled accumulation-mode transistor which is formed by controlling the thickness and the impurity atom concentration of a semiconductor layer so that the thickness of a depletion layer becomes greater than that of the semiconductor layer. For example, by setting the thickness of the semiconductor layer to 100 nm and setting the impurity concentration thereof to be higher than 2×1017 [cm?3], the standard deviation of variation in threshold values can be made smaller than a power supply voltage-based allowable variation value.
    Type: Application
    Filed: April 10, 2009
    Publication date: February 24, 2011
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Rihito Kuroda
  • Patent number: 7893537
    Abstract: At least part of an element isolation region, an interlayer insulating film, and a protection insulating film, other than a gate insulating film (silicon oxide film), is formed of carbon fluoride (CFx, 0.3<x<0.6) or hydrocarbon (CHy, 0.8<y<1.2).
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: February 22, 2011
    Assignee: Tohoku Uinversity
    Inventors: Tadahiro Ohmi, Akinobu Teramoto
  • Patent number: 7887385
    Abstract: An organic EL light emitting element is provided with a conductive transparent electrode 3, a counter electrode 8 opposing the conductive transparent electrode 3, an organic EL light emitting layer 6 provided between the conductive transparent electrode 3 and the counter electrode 8, an insulating protection layer 9 provided to cover at least the organic EL light emitting layer 6, and a heat dissipating layer 11 which is brought into contact with the insulating protection layer 9. The conductive transparent electrode has an ITO film including at least one of Hf, V and Zr at least on the surface part on the side of the organic EL light emitting layer 6, and the insulating protection layer 9 includes a nitride film having a thickness of 100 nm or less.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: February 15, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Akihiro Morimoto