Patents by Inventor Shinji Taniguchi

Shinji Taniguchi 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).

  • Patent number: 8941450
    Abstract: An acoustic wave device includes a main resonator and a sub resonator each having a substrate, a lower electrode provided on the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on an upper side of the piezoelectric film. A frequency control film is provided on an upper side of a resonance area in which the upper electrode and the lower electrode face each other in at least one of the main resonator and the sub resonator. The frequency control film has multiple convex patterns, and the convex patterns are arranged with a common pitch for spurious adjustment and with different areas in the main resonator and the sub resonator.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: January 27, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tsuyoshi Yokoyama, Shinji Taniguchi, Tokihiro Nishihara, Masanori Ueda
  • Publication number: 20140361664
    Abstract: An acoustic wave device includes: a piezoelectric film located on a substrate; a lower electrode and an upper electrode facing each other across the piezoelectric film; a temperature compensation film located on a surface, which is opposite to the piezoelectric film, of at least one of the lower electrode and the upper electrode and having a temperature coefficient of elastic constant opposite in sign to a temperature coefficient of elastic constant of the piezoelectric film; and an additional film located on a surface of the temperature compensation film opposite to the piezoelectric film and having an acoustic impedance greater than an acoustic impedance of the temperature compensation film.
    Type: Application
    Filed: May 12, 2014
    Publication date: December 11, 2014
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shinji TANIGUCHI, Tokihiro NISHIHARA
  • Patent number: 8854158
    Abstract: A method of manufacturing an elastic wave device is provided with a lamination step of forming, on a substrate (1), a plurality of elastic wave devices, each of which includes a lower electrode (2), a piezoelectric film (3), and an upper electrode (4); a measuring step for measuring the operation frequency distribution of the elastic wave devices on the substrate (1); and an adjusting step for forming an adjusting region, in which the thickness of the elastic wave device is different from the thicknesses of other portions in a resonance portion of each elastic wave device, corresponding with the distribution of the operation frequencies. The adjusting region is formed so that the size of the area of the adjusting region of the resonator portion of each elastic wave device is different in accordance with the operation frequency distribution that is measured. Thus, the frequency characteristics of the elastic wave devices are easily adjusted by a small number of steps.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: October 7, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tsuyoshi Yokoyama, Shinji Taniguchi, Masafumi Iwaki, Motoaki Hara, Takeshi Sakashita, Tokihiro Nishihara, Masanori Ueda
  • Patent number: 8841819
    Abstract: An acoustic wave device includes: a first piezoelectric thin film resonator including a first lower electrode, a first upper electrode and a first piezoelectric film sandwiched between the first lower and upper electrodes; a decoupler film provided on the first upper electrode; and a second piezoelectric thin film resonator provided on the decoupler film and including a second lower electrode, a second upper electrode and a second piezoelectric film sandwiched between the second lower and upper electrodes, wherein the first piezoelectric film and the second piezoelectric film comprise aluminum nitride and include an element increasing a piezoelectric constant of the aluminum nitride.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 23, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tokihiro Nishihara, Shinji Taniguchi, Tsuyoshi Yokoyama, Takeshi Sakashita
  • Publication number: 20140191826
    Abstract: A piezoelectric thin film resonator includes: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode located to sandwich the piezoelectric film; a load film formed from patterns in a resonance region in which the lower electrode and the upper electrode face each other across the piezoelectric film, wherein the patterns are formed so as to surround a center of the resonance region and intersect with a pathway extending from the center to an outer periphery of the resonance region.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 10, 2014
    Inventors: Kenya HASHIMOTO, Jiansong LIU, Masanori UEDA, Shinji TANIGUCHI, Tokihiro NISHIHARA
  • Patent number: 8756777
    Abstract: A method of manufacturing a ladder filter including first and second resonators includes: forming a piezoelectric film on an entire surface of a substrate that has respective lower electrodes of the first and second resonator formed thereon, an conductive film on the piezoelectric film, and a second film on the conductive film; forming a pattern of the second film in a prescribed region in the second area; forming a first film on an entire surface of the substrate; etching the first film, forming a pattern of the first film, the second film and the conductive film in the second area, and forming a pattern of the first film and the conductive film in the first area, to form respective upper electrodes from the conductor film; and thereafter, etching the piezoelectric film to form respective patterns of the piezoelectric film in the first and second areas, respectively.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: June 24, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Shinji Taniguchi, Tokihiro Nishihara, Tsuyoshi Yokoyama, Masafumi Iwaki, Go Endo, Yasuyuki Saitou, Hisanori Ehara, Masanori Ueda
  • Patent number: 8749320
    Abstract: An acoustic wave device includes piezoelectric thin-film resonators, each of which includes: a substrate; a piezoelectric thin-film on the substrate; an lower electrode provided on a first surface of the piezoelectric film; an upper electrode provided on a second surface of the piezoelectric film opposite to the first surface; and a first addition film that is provided in a resonance portion in which the lower electrode and the upper electrode face each other through the piezoelectric film and is located between the piezoelectric thin-film and the upper electrode, the first addition film having a shape different from that of the resonance portion.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: June 10, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tokihiro Nishihara, Shinji Taniguchi, Tsuyoshi Yokoyama, Masanori Ueda
  • Publication number: 20140132116
    Abstract: An acoustic wave device includes: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode facing each other across the piezoelectric film, at least one of the lower electrode and the upper electrode including a first conductive film and a second conductive film formed on the first conductive film; an insulating film sandwiched between the first conductive film and the second conductive film and having a temperature coefficient of an elastic constant opposite in sign to a temperature coefficient of an elastic constant of the piezoelectric film; and a third conductive film formed on edge surfaces of the insulating film and the second conductive film and causing electrical short circuits between the first conductive film and the second conductive film.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 15, 2014
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shinji TANIGUCHI, Tokihiro NISHIHARA
  • Patent number: 8723623
    Abstract: An acoustic wave device includes a substrate and a plurality of piezoelectric thin film resonators formed over the substrate. Each of the plurality of the piezoelectric thin film resonators includes lower electrode provided on the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film and opposed to the lower electrode through the piezoelectric film. Each of the piezoelectric thin film resonators is partly supported by the substrate and extends above the substrate to form a cavity between the substrate and each lower electrodes. The cavity continuously extending under the plurality of the piezoelectric thin film resonators.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: May 13, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Motoaki Hara, Tokihiro Nishihara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Masafumi Iwaki, Masanori Ueda
  • Patent number: 8653908
    Abstract: A piezoelectric thin film resonator of the present has a substrate 1, an intermediate layer 7 disposed on the substrate 1 and is formed of an insulator, a lower electrode 3 disposed on the intermediate layer 7, a piezoelectric film 4 disposed on the lower electrode 3, and an upper electrode 5 disposed on a position facing the lower electrode 3 with the piezoelectric film 4 interposed therebetween, in which, in a resonant region 8 where the lower electrode 3 and the upper electrode 5 face each other, a space 6 is formed in the substrate 1 and the intermediate layer 7 or between the lower electrode 3 and the intermediate layer 7 and the region of the space 6 is included in the resonant region 8. With the structure, the dissipation of the vibrational energy to the substrate from the resonance portion can be suppressed, thereby improving the quality factor.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: February 18, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Motoaki Hara, Tokihiro Nishihara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Masafumi Iwaki, Masanori Ueda
  • Patent number: 8531087
    Abstract: A piezoelectric thin-film resonator includes a substrate, a lower electrode provided on the substrate, a piezoelectric film provided on the lower electrode and an upper electrode that is located opposite the lower electrode across at least a part of the piezoelectric film. A mass load film is provided on the upper electrode. The mass load film includes a plurality of concave or convex patterns in at least a region that faces the lower electrode. The plurality of concave or convex patterns are densely arranged in a central portion of the region and are sparsely arranged in a peripheral portion of the region.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: September 10, 2013
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tsuyoshi Yokoyama, Shinji Taniguchi, Tokihiro Nishihara, Masanori Ueda
  • Patent number: 8488953
    Abstract: A filament lamp is provided. The filament lamp includes: a long light emitting section including a plurality of filaments aligned with one another in an axial direction of the light emitting section, wherein electric power is independently supplied to each of the filaments; a sealing section that seals the light emitting section, including: a first sealing section provided at one end of the light emitting section; and a second sealing section provided at the other end of the light emitting section; a plurality of metal foils embedded in the sealing section; a plurality of external leads each connected to a corresponding one of the metal foils and extending from the sealing section to the outside; and a plurality of glass pipes each provided on the sealing section so as to cover a corresponding one of the external leads.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: July 16, 2013
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Akinobu Nakashima, Shinji Taniguchi
  • Patent number: 8476848
    Abstract: For providing a lamp lighting device and a filament lamp wherein a wire breakage of the filament lamp can be detected without an excessive consumption of power while the device as a whole is not enlarged, a filament lamp is provided comprising a light emission tube having at least one sealing portion and in the interior of which at least one filament is arranged, internal leads connected to both ends of said filament, metal foils for power supply provided in said at least one sealing portion of the light emission tube and connected to said internal leads, and external leads connected to said metal foils for power supply; wherein a metal foil for detection is provided in said sealing portion and is connected to one of a said internal lead and a said metal foil for power supply, and an external detection lead is provided at said metal foil for detection.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: July 2, 2013
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventor: Shinji Taniguchi
  • Patent number: 8450906
    Abstract: A piezoelectric thin-film resonator includes a substrate, a lower electrode provided on the substrate, a piezoelectric film provided on the substrate and the lower electrode, an upper electrode provided on the piezoelectric film, and an additional pattern, a cavity being formed between the lower electrode and the substrate in a resonance portion in which the lower electrode and the upper electrode face each other through the piezoelectric film, the additional pattern being provided in a position that is on the lower electrode and includes an interface between the resonance portion and a non-resonance portion.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: May 28, 2013
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Shinji Taniguchi, Tokihiro Nishihara, Masafumi Iwaki, Masanori Ueda, Tsuyoshi Yokoyama, Takeshi Sakashita, Motoaki Hara
  • Publication number: 20130127565
    Abstract: A duplexer includes a transmission filter and a reception filter having different passbands, wherein: first resonators that are series resonators or parallel resonators included in the transmission and reception filters so as to form a skirt characteristic at a guard band side are a temperature compensated type piezoelectric thin film resonator or a surface acoustic wave resonator using Love waves, and second resonators that form a skirt characteristic at an opposite side to the guard band are one of a temperature non-compensated type piezoelectric thin film resonator, a surface acoustic wave resonator using a lithium tantalate substrate or a substrate made by bonding a lithium tantalate substrate on a sapphire substrate, and a surface acoustic wave resonator using Love waves.
    Type: Application
    Filed: September 11, 2012
    Publication date: May 23, 2013
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI
  • Publication number: 20130038405
    Abstract: An acoustic wave device includes: a substrate; a lower electrode formed on the substrate; at least two piezoelectric films formed on the lower electrode; an insulating film located between the at least two piezoelectric films; and an upper electrode formed on the at least two piezoelectric films, wherein an outer periphery of an uppermost piezoelectric film out of the at least two piezoelectric films in a region in which the lower electrode and the upper electrode face each other is positioned further in than an outer periphery of the upper electrode.
    Type: Application
    Filed: July 24, 2012
    Publication date: February 14, 2013
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shinji TANIGUCHI, Tokihiro NISHIHARA, Masanori UEDA, Tsuyoshi YOKOYAMA, Takeshi SAKASHITA
  • Publication number: 20130033337
    Abstract: An acoustic wave filter including piezoelectric thin film resonators, in which at least two of the piezoelectric thin film resonators including: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode located across at least a part of the piezoelectric film; a mass load film for a frequency control located in a resonance region where the lower electrode and the upper electrode face each other, and having a shape different from that of the resonance region; and a temperature compensation film having a temperature coefficient of an elastic constant opposite in sign to that of the piezoelectric film, at least a part of the temperature compensation film being located between the lower electrode and the upper electrode in the resonance region, and areas of mass load films of said at least two of the piezoelectric thin film resonators are different from each other.
    Type: Application
    Filed: July 24, 2012
    Publication date: February 7, 2013
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI, Masanori UEDA
  • Publication number: 20130033151
    Abstract: A piezoelectric thin-film resonator includes: a lower electrode provided on a substrate; a piezoelectric film that is provided on the lower electrode and includes at least two layers; an upper electrode that is provided on the piezoelectric film and has a region sandwiching the piezoelectric film with the lower electrode and facing the lower electrode; and an insulating film that is provided in a region in which the lower electrode and the upper electrode face each other and between each of the at least two layers, wherein an upper face of the insulating film is flatter than a lower face of the insulating film.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 7, 2013
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Masanori UEDA, Shinji TANIGUCHI, Tokihiro NISHIHARA
  • Patent number: 8344590
    Abstract: An acoustic wave device includes a main resonator and a sub resonator each having a substrate, a lower electrode provided on the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on an upper side of the piezoelectric film. The sub resonator has a mass addition film on the upper electrode in a resonance area in which the upper electrode and the lower electrode face each other. At least one of the main resonator and the sub resonator is provided with a frequency control film on an upper side of the resonance area, and the frequency control film has a weight per unit area smaller than a weight of the mass addition film per unit area.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: January 1, 2013
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tsuyoshi Yokoyama, Shinji Taniguchi, Tokihiro Nishihara, Masanori Ueda
  • Publication number: 20120306591
    Abstract: An electronic circuit includes a plurality of duplexers that are coupled to an antenna terminal and have a pass band different from each other and a plurality of acoustic wave filters that are respectively coupled between the antenna terminal and the plurality of the duplexers, wherein filter characteristics of a first acoustic wave filter of the plurality of the acoustic wave filters are set so as to allow passage of a signal in both a pass band for transmitting and a pass band for receiving of a first duplexer of the plurality of the duplexers that is coupled to the first acoustic wave filter and suppress passage of a signal in both a pass band for transmitting and a pass band for receiving of a second duplexer of the plurality of the duplexers that is different from the first duplexer.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 6, 2012
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI, Tsuyoshi YOKOYAMA, Masanori UEDA