Patents by Inventor Tokihiro Nishihara
Tokihiro Nishihara 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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Patent number: 8766103Abstract: An electronic component includes: a multilayer ceramic substrate that has a penetration electrode formed therein, and has a passive element provided on the upper face thereof; an insulating film that is provided on the multilayer ceramic substrate, and has an opening above the penetration electrode; a first connecting terminal that is provided on the insulating film so as to cover the opening, and is electrically connected to the penetration electrode; and a second connecting terminal that is provided on a region of the insulating film other than the opening region.Type: GrantFiled: December 24, 2008Date of Patent: July 1, 2014Assignees: Taiyo Yuden Co., Ltd., Fujitsu LimitedInventors: Takeo Takahashi, Xiaoyu Mi, Tsuyoshi Yokoyama, Tokihiro Nishihara, Satoshi Ueda
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Patent number: 8766744Abstract: In one aspect of the invention, a duplexer including a multilayer substrate with multiple stacked layers and a back surface with a rectangular shape is disclosed. An antenna terminal, a transmission terminal, a reception terminal, a ground terminal, and a conductor are provided in various positions on the multilayer substrate for improved performance.Type: GrantFiled: October 20, 2011Date of Patent: July 1, 2014Assignee: Taiyo Yuden Co., Ltd.Inventors: Masafumi Iwaki, Motoaki Hara, Tokihiro Nishihara
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Patent number: 8756777Abstract: 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: GrantFiled: December 28, 2009Date of Patent: June 24, 2014Assignee: Taiyo Yuden Co., Ltd.Inventors: Shinji Taniguchi, Tokihiro Nishihara, Tsuyoshi Yokoyama, Masafumi Iwaki, Go Endo, Yasuyuki Saitou, Hisanori Ehara, Masanori Ueda
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Patent number: 8749320Abstract: 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: GrantFiled: February 16, 2012Date of Patent: June 10, 2014Assignee: Taiyo Yuden Co., Ltd.Inventors: Tokihiro Nishihara, Shinji Taniguchi, Tsuyoshi Yokoyama, Masanori Ueda
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Publication number: 20140132116Abstract: 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: ApplicationFiled: October 31, 2013Publication date: May 15, 2014Applicant: TAIYO YUDEN CO., LTD.Inventors: Shinji TANIGUCHI, Tokihiro NISHIHARA
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Patent number: 8723623Abstract: 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: GrantFiled: July 15, 2009Date of Patent: May 13, 2014Assignee: 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: 8653908Abstract: 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: GrantFiled: March 4, 2008Date of Patent: February 18, 2014Assignee: Taiyo Yuden Co., Ltd.Inventors: Motoaki Hara, Tokihiro Nishihara, Shinji Taniguchi, Takeshi Sakashita, Tsuyoshi Yokoyama, Masafumi Iwaki, Masanori Ueda
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Publication number: 20130241673Abstract: An acoustic wave device includes: a piezoelectric film made of an aluminum nitride film containing a divalent element and a tetravalent element, or a divalent element and a pentavalent element; and an electrode that excites an acoustic wave propagating through the piezoelectric film.Type: ApplicationFiled: March 6, 2013Publication date: September 19, 2013Applicant: TAIYO YUDEN CO., LTD.Inventors: Tsuyoshi YOKOYAMA, Yoshiki IWAZAKI, Tokihiro NISHIHARA, Yosuke ONDA
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Patent number: 8531087Abstract: 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: GrantFiled: August 9, 2012Date of Patent: September 10, 2013Assignee: Taiyo Yuden Co., Ltd.Inventors: Tsuyoshi Yokoyama, Shinji Taniguchi, Tokihiro Nishihara, Masanori Ueda
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Patent number: 8450906Abstract: 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: GrantFiled: April 17, 2012Date of Patent: May 28, 2013Assignee: Taiyo Yuden Co., Ltd.Inventors: Shinji Taniguchi, Tokihiro Nishihara, Masafumi Iwaki, Masanori Ueda, Tsuyoshi Yokoyama, Takeshi Sakashita, Motoaki Hara
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Publication number: 20130127565Abstract: 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: ApplicationFiled: September 11, 2012Publication date: May 23, 2013Applicant: TAIYO YUDEN CO., LTD.Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI
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Patent number: 8378760Abstract: A duplexer includes an unbalanced transmitting filter; a balanced receiving filter; a transmitting port connected to the transmitting filter; and a first receiving port and a second receiving port connected to the receiving filter. The duplexer also includes an electromagnetic coupling portion connected between the transmitting port and the first receiving port and between the transmitting port and the second receiving port. The electromagnetic coupling portion adjusts the phase between electric power that flows from the transmitting port to the first receiving port and electric power that flows from the transmitting port to the second receiving port.Type: GrantFiled: July 31, 2012Date of Patent: February 19, 2013Assignee: Taiyo Yuden Co., Ltd.Inventors: Masafumi Iwaki, Jun Tsutsumi, Tokihiro Nishihara, Masanori Ueda
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Publication number: 20130038405Abstract: 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: ApplicationFiled: July 24, 2012Publication date: February 14, 2013Applicant: TAIYO YUDEN CO., LTD.Inventors: Shinji TANIGUCHI, Tokihiro NISHIHARA, Masanori UEDA, Tsuyoshi YOKOYAMA, Takeshi SAKASHITA
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Publication number: 20130033151Abstract: 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: ApplicationFiled: July 31, 2012Publication date: February 7, 2013Applicant: TAIYO YUDEN CO., LTD.Inventors: Masanori UEDA, Shinji TANIGUCHI, Tokihiro NISHIHARA
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Publication number: 20130033337Abstract: 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: ApplicationFiled: July 24, 2012Publication date: February 7, 2013Applicant: TAIYO YUDEN CO., LTD.Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI, Masanori UEDA
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Patent number: 8344590Abstract: 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: GrantFiled: March 27, 2012Date of Patent: January 1, 2013Assignee: Taiyo Yuden Co., Ltd.Inventors: Tsuyoshi Yokoyama, Shinji Taniguchi, Tokihiro Nishihara, Masanori Ueda
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Publication number: 20120313725Abstract: The filter includes: a primary transducer connected to a primary terminal; a secondary transducer connected to a plurality of secondary terminals; and a coupling transducer for mechanically coupling the primary transducer and the secondary transducer.Type: ApplicationFiled: August 21, 2012Publication date: December 13, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Masanori UEDA, Takashi MATSUDA, Tokihiro NISHIHARA
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Publication number: 20120313726Abstract: A filter includes a plurality of primary resonators connected to a serial arm, a plurality of secondary resonators connected to a parallel arm, a primary inductor connected to at least one of the plurality of primary resonators and a secondary inductor connected to at least one of the plurality of secondary resonators. The primary inductor is arranged so as not to be connected to a path between the secondary resonator to which the secondary inductor is connected in parallel and the primary resonator that is connected to the secondary resonator to which the secondary inductor is connected in parallel.Type: ApplicationFiled: August 21, 2012Publication date: December 13, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Masanori UEDA, Takashi MATSUDA, Tokihiro NISHIHARA
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Patent number: 8330558Abstract: There is provided a filter including a first resonator, a second resonator in which an excitation efficiency is reduced more than the first resonator, and an inductor connected in parallel with the second resonator.Type: GrantFiled: February 5, 2010Date of Patent: December 11, 2012Assignee: Taiyo Yuden Co., Ltd.Inventors: Shogo Inoue, Tokihiro Nishihara, Takashi Matsuda, Masanori Ueda
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Publication number: 20120306591Abstract: 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: ApplicationFiled: May 31, 2012Publication date: December 6, 2012Applicant: TAIYO YUDEN CO., LTD.Inventors: Tokihiro NISHIHARA, Shinji TANIGUCHI, Tsuyoshi YOKOYAMA, Masanori UEDA