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).
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Publication number: 20120200195Abstract: 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: ApplicationFiled: March 27, 2012Publication date: August 9, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Tsuyoshi YOKOYAMA, Shinji TANIGUCHI, Tokihiro NISHIHARA, Masanori UEDA
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Patent number: 8228138Abstract: A filter element includes a plurality of multilayer filters that are connected in cascade, each of the plurality of multilayer filters including a plurality of piezoelectric thin-film resonators stacked vertically, each of the piezoelectric thin-film resonators including a piezoelectric film and a pair of first electrodes between which the piezoelectric film is interposed, and a capacitor connected between an input terminal of one of the plurality of multilayer filters of a preceding stage and an input terminal of another one of the plurality of multilayer filters of a following stage, exciting directions of piezoelectric thin-film resonators to which the input terminals of the multilayer filters of the preceding and following stages are connected being opposite to each other.Type: GrantFiled: July 7, 2011Date of Patent: July 24, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Motoaki Hara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Masafumi Iwaki, Tokihiro Nishihara, Masanori Ueda
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Publication number: 20120182092Abstract: 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: ApplicationFiled: March 27, 2012Publication date: July 19, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Tsuyoshi YOKOYAMA, Shinji TANIGUCHI, Tokihiro NISHIHARA, Masanori UEDA
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Patent number: 8222970Abstract: A resonant device includes first and second piezoelectric thin film resonators. The first piezoelectric thin film resonator includes a substrate, a first lower electrode formed on the substrate, a first piezoelectric film formed over the first lower electrode, and a first upper electrode formed on the piezoelectric film and opposed to the first lower electrode. The second piezoelectric thin film resonator includes a second lower electrode formed above the first upper electrode, a second piezoelectric film formed over the second lower electrode, and a second upper electrode formed on the piezoelectric film and opposed to the second lower electrode. The first membrane region in which the first lower electrode opposes to the first upper electrode through the first piezoelectric film and a second membrane region in which the second lower electrode opposes to the second upper electrode through the second piezoelectric film are laminated through a second cavity.Type: GrantFiled: July 15, 2009Date of Patent: July 17, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Kazunori Inoue, Tokihiro Nishihara, Takashi Matsuda, Shinji Taniguchi
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Publication number: 20120146744Abstract: 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: ApplicationFiled: February 16, 2012Publication date: June 14, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI, Tsuyoshi YOKOYAMA, Masanori UEDA
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Publication number: 20120104900Abstract: 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: ApplicationFiled: September 22, 2011Publication date: May 3, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI, Tsuyoshi YOKOYAMA, Takeshi SAKASHITA
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Patent number: 8164398Abstract: A resonator includes a substrate, a lower electrode, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film. The lower electrode includes a first film provided on the substrate, and a second film that is provided on the first film and has a specific gravity greater than that of the first film. The piezoelectric film is provided on the second film. The upper electrode includes a third film provided on the piezoelectric film, and a fourth film provided on the third film, the third film having a specific gravity greater than that of the fourth film. The third film is thicker than the second film.Type: GrantFiled: August 25, 2009Date of Patent: April 24, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Shinji Taniguchi, Tokihiro Nishihara, Masufumi Iwaki, Masanori Ueda, Go Endo, Tsuyoshi Yokoyama, Takeshi Sakashita, Motoaki Hara
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Patent number: 8125298Abstract: An acoustic wave filter having excellent steepness is provided without adding any exterior components or any new manufacturing steps. A plurality of filters (10-1) each having a first resonator (2a-1) placed in a serial arm and having a resonance frequency frs and an anti-resonance frequency fas, and a second resonator (4a-1) placed in a parallel arm and having a resonance frequency frp and an anti-resonance frequency fap are provided on a same substrate, where the resonance frequency frs of the first resonator is higher than the resonance frequency frp of the second resonator; the anti-resonance frequency fas of the first resonator is higher than the anti-resonance frequency fap of the second resonator; and the filters (10-1) are connected in multiple stages. At least one of the filters (10-1) connected in multiple stages has a third resonator (6-1) having a resonance frequency frp and an anti-resonance frequency fap.Type: GrantFiled: January 8, 2010Date of Patent: February 28, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Motoaki Hara, Tokihiro Nishihara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Masafumi Iwaki, Masanori Ueda
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Patent number: 8125297Abstract: A filter includes: a first filter unit includes: a series resonators connected in series to each other between a first input terminal and a first output terminal; a parallel resonators each having one end connected to one terminal of each of the series resonators; and a common inductance having one end connected to the other ends of the parallel resonators and the other end connected to a ground terminal, and a second filter unit includes: a series resonators connected in series to each other between a second input terminal and a second output terminal; a parallel resonators each having one end connected to one terminal of each of the series resonators; and a common inductance having one end connected to the other ends of the parallel resonators and the other end connected to the ground terminal.Type: GrantFiled: July 30, 2009Date of Patent: February 28, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Masafumi Iwaki, Tokihiro Nishihara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Motoaki Hara, Masanori Ueda
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Patent number: 8125123Abstract: A piezoelectric thin film resonant element includes a resonant portion having a laminate structure made up of a lower electrode, an upper electrode and a piezoelectric film arranged between these two electrodes. The lower electrode has an ellipsoidal plan-view shape and an outer circumference formed with an inclined portion inclined at an angle (about 30° for example) lying within a range of 25° through 55°. The upper electrode has an ellipsoidal plan-view shape. An additional film is provided on the upper electrode at a portion corresponding to the inclined portion of the lower electrode.Type: GrantFiled: December 18, 2009Date of Patent: February 28, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Tokihiro Nishihara, Motoaki Hara, Shinji Taniguchi, Masafumi Iwaki, Tsuyoshi Yokoyama, Masanori Ueda
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Patent number: 8093962Abstract: A filter has a plurality of piezoelectric thin film resonators formed by sandwiching a piezoelectric film with a lower electrode disposed on a substrate and an upper electrode. Each of the piezoelectric thin film resonators has an electrode region formed with the upper electrode and the lower electrode overlapping each other, whose outline includes a curve. Among the plural piezoelectric thin film resonators, the piezoelectric thin film resonators in the opposing electrode regions of the adjacent piezoelectric thin film resonators are shaped to have outlines complementary to each other. With the filter, influences caused by transverse mode undesired wave of the piezoelectric thin film resonators can be suppressed. Therefore, miniaturization can be achieved without sacrificing the mechanical strength of electrodes having hollow structures.Type: GrantFiled: June 30, 2009Date of Patent: January 10, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Shinji Taniguchi, Tokihiro Nishihara, Tsuyoshi Yokoyama, Masafumi Iwaki, Motoaki Hara, Takeshi Sakashita, Masanori Ueda
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Patent number: 8084919Abstract: A piezoelectric thin film resonator includes a substrate, a lower electrode formed on the substrate, a piezoelectric film formed on the lower electrode, and an upper electrode formed on the piezoelectric film, the lower electrode and the upper electrode opposing each other through the piezoelectric film to form an opposing region, the opposing region including a space at a boundary of the opposing region. The space extends from an innerside to an outer side of the opposing region and is formed in or on the piezoelectric film.Type: GrantFiled: August 4, 2009Date of Patent: December 27, 2011Assignee: Taiyo Yuden Co., Ltd.Inventors: Tokihiro Nishihara, Motoaki Hara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Masafumi Iwaki, Masanori Ueda
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Patent number: 8085115Abstract: A piezoelectric thin film resonator includes a substrate, a lower electrode formed on the substrate, a piezoelectric film formed on the substrate and the lower electrode, and an upper electrode formed on the piezoelectric film and opposing the lower electrode, an upper electrode formed on the piezoelectric film. The upper electrode has a main portion and an extended portion connected to the main portion, the main portion opposing the lower electrode and an opening disposed between the substrate and the lower electrode, the extended portion having a portion which opposes the opening and the substrate.Type: GrantFiled: March 4, 2009Date of Patent: December 27, 2011Assignee: Taiyo Yuden Co., LtdInventors: Shinji Taniguchi, Tokihiro Nishihara, Tsuyoshi Yokoyama, Masafumi Iwaki, Motoaki Hara, Masanori Ueda
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Publication number: 20110267155Abstract: A filter element includes a plurality of multilayer filters that are connected in cascade, each of the plurality of multilayer filters including a plurality of piezoelectric thin-film resonators stacked vertically, each of the piezoelectric thin-film resonators including a piezoelectric film and a pair of first electrodes between which the piezoelectric film is interposed, and a capacitor connected between an input terminal of one of the plurality of multilayer filters of a preceding stage and an input terminal of another one of the plurality of multilayer filters of a following stage, exciting directions of piezoelectric thin-film resonators to which the input terminals of the multilayer filters of the preceding and following stages are connected being opposite to each other.Type: ApplicationFiled: July 7, 2011Publication date: November 3, 2011Applicant: TAIYO YUDEN CO., LTD.Inventors: Motoaki HARA, Shinji TANIGUCHI, Takeshi SAKASHITA, Tsuyoshi YOKOYAMA, Masafumi IWAKI, Tokihiro NISHIHARA, Masanori UEDA
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Publication number: 20110241800Abstract: 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: ApplicationFiled: November 28, 2008Publication date: October 6, 2011Applicant: TAIYO YUDEN CO., LTD.Inventors: Tsuyoshi Yokoyama, Shinji Taniguchi, Masafumi Iwaki, Motoaki Hara, Takeshi Sakashita, Tokihiro Nishihara, Masanori Ueda
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Publication number: 20110229112Abstract: A heating apparatus contains a chamber that has a space for placing a work piece, a filament lamp that has an arc tube, and a sealing portion provided at an end of the arc tube. The heating apparatus further contains a glass tube extending through the chamber. A cooling fluid is introduced into the glass tube. An end of the glass tube extends to an outside of the chamber. A sealing member seals the glass tube and the chamber. The filament lamp is arranged inside the glass tube.Type: ApplicationFiled: March 10, 2011Publication date: September 22, 2011Applicant: USHIO DENKI KABUSHIKI KAISHAInventors: Shinji Taniguchi, Toru Odagaki
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Patent number: 8018298Abstract: An acoustic wave device includes a first resonator having a piezoelectric substance sandwiched between a pair of electrodes in a direction of an c-axis orientation or a polarization axis, and a second resonator that is connected in series and has another piezoelectric substance sandwiched another pair of electrodes so that one of the another pair of electrodes located in the direction of the c-axis orientation or the polarization axis is at a potential equal to that of one of the pair of electrodes of the first resonator in the direction of the c-axis orientation or the polarization axis.Type: GrantFiled: August 31, 2007Date of Patent: September 13, 2011Assignee: Taiyo Yuden Co., Ltd.Inventors: Masanori Ueda, Masafumi Iwaki, Tokihiro Nishihara, Shinji Taniguchi, Go Endo, Yasuo Ebata
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Patent number: 7884527Abstract: A piezoelectric thin-film resonator includes: a substrate; a lower electrode that is formed on the substrate; a piezoelectric film that is formed on the lower electrode and the substrate; and an upper electrode that is formed on the piezoelectric film, with the piezoelectric film being partially interposed between the lower electrode and the upper electrode facing each other. In this piezoelectric thin-film resonator, at least a part of the outer periphery of the piezoelectric film interposed between the lower electrode and the upper electrode overlaps the outer periphery of the region formed by the upper electrode and the lower electrode facing each other.Type: GrantFiled: October 27, 2005Date of Patent: February 8, 2011Assignee: Taiyo Yuden Co., Ltd.Inventors: Jun Tsutsumi, Tsuyoshi Yokoyama, Takeshi Sakashita, Shinji Taniguchi, Masafumi Iwaki, Tokihiro Nishihara, Masanori Ueda
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Patent number: 7872548Abstract: An antenna duplexer is provided, which can be built with a smaller size and lower height than ever without compromising out-of-band attenuation characteristic and isolation characteristic between a transmit terminal and a receive terminal. The antenna duplexer includes a transmit filter provided between an antenna terminal and the transmit terminal, and a receive filter provided between the antenna terminal and the receive terminal. The filters are enclosed by a package, in which a ground pattern for the receive filter is separated from other ground patterns.Type: GrantFiled: April 21, 2008Date of Patent: January 18, 2011Assignee: Taiyo Yuden Co., LtdInventors: Tokihiro Nishihara, Masafumi Iwaki, Shinji Taniguchi, Masanori Ueda, Go Endo, Koichi Hatano
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Patent number: 7872420Abstract: In a metal halide lamp having a rated lamp wattage of greater than or equal to 450 W, which includes: a translucent ceramic arc tube enclosure including: a main tube inside which a discharge space is formed; and two narrow tubes having smaller diameter than the main tube, each connected to either end of the main tube; two electrodes; and a metal halide provided inside the arc tube enclosure, in which one of the two electrodes is disposed so that it protrudes inside the main tube from inside of one of the two narrow tubes, and the other one of the two electrodes is disposed so that it protrudes inside the main tube from the other one of the two narrow tubes, and when the rated lamp wattage is denoted by W (watt), an inside diameter of the main tube by D (mm), an electrode protruding length which is the distance from boundary between the main tube and the narrow tubes to an end of the electrode by L (mm), and the distance between ends of the two electrodes by E (mm), a bulb wall loading G (watt/cm2) representedType: GrantFiled: February 17, 2006Date of Patent: January 18, 2011Assignee: GS Yuasa International Ltd.Inventors: Kazuhiko Kawasaki, Shinji Taniguchi, Kuniaki Nakano