Patents by Inventor Tomoya Komatsu

Tomoya Komatsu 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: 20210159878
    Abstract: An acoustic wave device comprises a piezoelectric substrate, interdigital transducer electrodes having an electrode pitch ?0, and first and second reflector gratings disposed on opposite respective sides of the interdigital transducer electrodes in a propagation direction of a main acoustic wave through the acoustic wave device, the first reflector grating having a different electrode pitch ?1 than an electrode pitch ?2 of the second reflector grating to suppress ripples in a conductance curve of the acoustic wave device.
    Type: Application
    Filed: November 10, 2020
    Publication date: May 27, 2021
    Inventors: Xiao Zhang, Tomoya Komatsu, Yiliu Wang
  • Patent number: 11018201
    Abstract: A display device with improved viewing angle characteristics is provided. A display device with suppressed mixture of colors between adjacent pixels is provided. The display device includes a first coloring layer, a second coloring layer, and a structure body therebetween. The structure body has a portion closer to a display surface side than a bottom surface of the first coloring layer or a bottom surface of the second coloring layer.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: May 25, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoya Aoyama, Ryu Komatsu, Daiki Nakamura
  • Publication number: 20210119609
    Abstract: Aspects of this disclosure relate to an acoustic wave resonator having at least two resonant frequencies. An acoustic wave filter can include series acoustic wave resonators and shunt acoustic wave resonators together arranged to filter a radio frequency signal. A first shunt resonator of the shunt acoustic wave resonators can include an interdigital transducer electrode and have at least a first resonant frequency and a second resonant frequency. Related acoustic wave resonators, multiplexers, wireless devices, and methods are disclosed.
    Type: Application
    Filed: December 30, 2020
    Publication date: April 22, 2021
    Inventors: Yasufumi Kaneda, Yiliu Wang, Tomoya Komatsu
  • Publication number: 20210111705
    Abstract: Aspects of this disclosure relate to a multiplexer that includes an acoustic wave filter including acoustic wave resonators on at least two die with a transmission line electrically connecting the acoustic wave resonators on the two die. The acoustic wave filter can include a plurality of acoustic wave resonators on a first die electrically connected to at least one acoustic wave resonator on a second die via the transmission line. The acoustic wave resonator on the second die can provide a relatively high impedance at a respective passband of one or more other filters of the multiplexer. This can reduce effects of the transmission line of the acoustic wave filter on a respective passband of one or more other filters of the multiplexer.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventor: Tomoya Komatsu
  • Patent number: 10979028
    Abstract: An electronic filter includes a plurality of series arm acoustic wave resonators electrically connected in series between an input port and an output port, a plurality of parallel arm acoustic wave resonators electrically connected in parallel and electrically connected on first sides between respective ones of the plurality of series arm acoustic wave resonators and electrically connected on second sides to ground, and at least one additional acoustic wave resonator electrically connected in parallel to one of one of the plurality of series arm acoustic wave resonators or one of the plurality of parallel arm acoustic wave resonators and having a temperature coefficient of frequency (TCF) lower than a TCF of the acoustic wave resonator to which it is electrically connected in parallel.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: April 13, 2021
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Tomoya Komatsu, Joji Fujiwara
  • Publication number: 20210105004
    Abstract: Aspects of this disclosure relate to an acoustic wave filter with an acoustic wave resonator arranged to concentrate a transverse spurious mode at a frequency. Such an acoustic wave resonator can have a narrow aperture to concentrate the transverse spurious mode. The transverse spurious mode can increase steepness of a skirt of the acoustic wave filter. Related methods, acoustic wave devices, multiplexers, radio frequency front ends, radio frequency modules, and wireless communication devices are disclosed.
    Type: Application
    Filed: December 17, 2020
    Publication date: April 8, 2021
    Inventors: Tomoya Komatsu, Yiliu Wang, Akira Ochiai, Joshua James Caron
  • Publication number: 20210105006
    Abstract: Bulk acoustic wave resonators of two or more different filters can be on a common die. The two filters can be included in a multiplexer, such as a duplexer, or implemented as standalone filters. With bulk acoustic wave resonators of two or more filters on the same die, the filters can be implemented in less physical space compared to implementing the same filters of different die. Related methods, radio frequency systems, radio frequency modules, and wireless communication devices are also disclosed.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 8, 2021
    Inventors: Akshara Kankar, Tomoya Komatsu, Abhishek Dey, Nan Wu, Stephane Richard Marie Wloczysiak
  • Publication number: 20210105005
    Abstract: Bulk acoustic wave resonators of two or more different filters can be on a common die. The two filters can be included in a multiplexer, such as a duplexer, or implemented as standalone filters. With bulk acoustic wave resonators of two or more filters on the same die, the filters can be implemented in less physical space compared to implementing the same filters of different die. Related methods, radio frequency systems, radio frequency modules, and wireless communication devices are also disclosed.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 8, 2021
    Inventors: Akshara Kankar, Tomoya Komatsu, Abhishek Dey, Nan Wu, Stephane Richard Marie Wloczysiak
  • Publication number: 20210091751
    Abstract: Aspects of this disclosure relate to a multiplexer that includes a first filter and a second filter coupled to a common node. The first filter includes an acoustic filter arranged to filter a radio frequency signal, a matching network coupled between the acoustic filter and the common node, and a parallel circuit coupled in series between the acoustic filter and the common node. The parallel circuit includes an inductive component in parallel with a capacitive component. In certain instances, the first filter is coupled to the common node via a switch, the matching network is coupled to a node between the acoustic filter and the switch, and the parallel circuit is coupled in series between the acoustic filter and the switch. Related methods, radio frequency modules, and wireless communication devices are also disclosed.
    Type: Application
    Filed: September 16, 2020
    Publication date: March 25, 2021
    Inventors: Tomoya Komatsu, Yiliu Wang, Toru Jibu
  • Publication number: 20210067139
    Abstract: Aspects of this disclosure relate to a multiplexer that includes at least a first filter having a first passband and a second filter having a second passband. The first filter includes acoustic wave resonators coupled to a common node by a series inductor. The acoustic wave resonators start with a shunt acoustic resonator from the common node. The series inductor and the shunt acoustic resonator of the first filter are together arranged to increase a reflection coefficient of the first filter in the second passband.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Inventors: Tomoya Komatsu, Yiliu Wang, Nan Wu
  • Publication number: 20210058069
    Abstract: Aspects of this disclosure relate to a multiplexer that includes an acoustic wave filter including acoustic wave resonators on at least two die with a transmission line electrically connecting the acoustic wave resonators on the two die. The acoustic wave filter can include a plurality of acoustic wave resonators on a first die electrically connected to at least one acoustic wave resonator on a second die via the transmission line. The acoustic wave resonator on the second die can provide a relatively high impedance at a respective passband of one or more other filters of the multiplexer. This can reduce effects of the transmission line of the acoustic wave filter on a respective passband of one or more other filters of the multiplexer.
    Type: Application
    Filed: August 7, 2020
    Publication date: February 25, 2021
    Inventor: Tomoya Komatsu
  • Publication number: 20210044278
    Abstract: Bulk acoustic wave resonators of two or more different filters can be on a common die. The two filters can be included in a multiplexer, such as a duplexer, or implemented as standalone filters. With bulk acoustic wave resonators of two or more filters on the same die, the filters can be implemented in less physical space compared to implementing the same filters of different die. Related methods, radio frequency systems, radio frequency modules, and wireless communication devices are also disclosed.
    Type: Application
    Filed: July 23, 2020
    Publication date: February 11, 2021
    Inventors: Akshara Kankar, Tomoya Komatsu, Abhishek Dey, Nan Wu, Stephane Richard Marie Wloczysiak
  • Publication number: 20200403601
    Abstract: Aspects of this disclosure relate to an acoustic wave filter with an acoustic wave resonator arranged to concentrate a transverse spurious mode at a frequency. Such an acoustic wave resonator can have a narrow aperture to concentrate the transverse spurious mode. The transverse spurious mode can increase steepness of a skirt of the acoustic wave filter. Related methods, acoustic wave devices, multiplexers, radio frequency front ends, radio frequency modules, and wireless communication devices are disclosed.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 24, 2020
    Inventors: Tomoya Komatsu, Yiliu Wang, Akira Ochiai, Joshua James Caron
  • Publication number: 20200358424
    Abstract: Aspects of this disclosure relate to an acoustic wave resonator having at least two resonant frequencies. An acoustic wave filter can include series acoustic wave resonators and shunt acoustic wave resonators together arranged to filter a radio frequency signal. A first shunt resonator of the shunt acoustic wave resonators can include an interdigital transducer electrode and have at least a first resonant frequency and a second resonant frequency. Related acoustic wave resonators, multiplexers, wireless devices, and methods are disclosed.
    Type: Application
    Filed: May 4, 2020
    Publication date: November 12, 2020
    Inventors: Yasufumi Kaneda, Yiliu Wang, Tomoya Komatsu
  • Patent number: 10786375
    Abstract: A stent including linear struts forming an outer periphery of a cylindrical shape in which a gap is formed, a link portion connecting the struts to each other in the gap, and a connection extension portion extending along a connection direction of the link portion. The link portion includes a first curved portion provided on one end in the connection direction, and curves to protrude inward in the radial direction, and a second curved portion provided on the other end of the connection direction, and curves to protrude inward in the radial direction. The connection extension portion includes a first gradually decreasing portion gradually decreasing from the first curved portion toward an edge on one end of the connection direction, and a second gradually decreasing portion gradually decreasing from the second curved portion toward an edge on the other end of the connection direction.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: September 29, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Ryosuke Ueda, Tomoya Komatsu
  • Publication number: 20190386642
    Abstract: An electronic device comprises a first surface acoustic wave (SAW) resonator and a second SAW resonator, each including interleaved interdigital transducer (IDT) electrodes, the first and second SAW resonators being formed on a same piezoelectric substrate, the first SAW resonator having IDT electrodes with a different finger pitch than the IDT electrodes of the second SAW resonator; a dielectric material layer disposed on the IDT electrodes of the first and second SAW resonators; and a high velocity layer disposed within the dielectric material layer disposed on the IDT electrodes of the first SAW resonator, the second SAW resonator lacking a high velocity layer disposed within the dielectric material layer disposed on the IDT electrodes.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Inventor: Tomoya Komatsu
  • Publication number: 20190363696
    Abstract: Aspects of this disclosure relate to an acoustic wave filter that includes acoustic wave resonators arranged to filter a radio frequency signal. The acoustic wave resonators include a first acoustic wave resonator. The acoustic wave filter includes a circuit element in parallel with the first acoustic wave resonator in a stage of the acoustic wave filter. The circuit element and the first acoustic wave resonator have different resonant frequencies. The circuit element can reduce an impact of bulk mode of the first acoustic wave resonator on insertion loss of the acoustic wave filter. The first acoustic wave resonator can be a surface acoustic wave resonator in certain embodiments. The circuit element can be a second acoustic wave resonator or a capacitor, for example.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 28, 2019
    Inventors: Tomoya Komatsu, Satoru Ikeuchi, Stephane Richard Marie Wloczysiak
  • Patent number: 10491194
    Abstract: A filter device including a first filter having a first passband, and a second filter having a second passband, the first and second filters each being connected between a common contact and a respective signal contact, and the filter device configured to reduce spurious emissions generated in one filter due to propagation of Lamb waves in the other filter. In one example the first filter includes a SAW filter formed on a piezoelectric substrate, a SAW resonator formed on the piezoelectric substrate and connected in series between the common contact and the SAW filter, and a dielectric film formed over the piezoelectric substrate covering the SAW filter and the SAW resonator. The dielectric film has a first thickness over the SAW filter and a second, lesser, thickness over the SAW resonator, a difference between the first and second thicknesses being selected to suppress spurious emissions in the second passband generated by propagation of a Lamb wave in the SAW filter.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: November 26, 2019
    Assignee: SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD.
    Inventors: Tomoya Komatsu, Joji Fujiwara
  • Publication number: 20190341911
    Abstract: An electronic filter includes a plurality of series arm acoustic wave resonators electrically connected in series between an input port and an output port, a plurality of parallel arm acoustic wave resonators electrically connected in parallel and electrically connected on first sides between respective ones of the plurality of series arm acoustic wave resonators and electrically connected on second sides to ground, and at least one additional acoustic wave resonator electrically connected in parallel to one of one of the plurality of series arm acoustic wave resonators or one of the plurality of parallel arm acoustic wave resonators and having a temperature coefficient of frequency (TCF) lower than a TCF of the acoustic wave resonator to which it is electrically connected in parallel.
    Type: Application
    Filed: April 24, 2019
    Publication date: November 7, 2019
    Inventors: Tomoya Komatsu, Joji Fujiwara
  • Patent number: 10391283
    Abstract: A balloon catheter and a stent delivery system are disclosed, which includes a shaft portion of which an axially orthogonal cross section of an outer peripheral surface has a polygonal shape, and a balloon which is foldable on the outer peripheral surface of the shaft portion and in which turned-back portions are formed when folded. Portions formed to linearly extend along an axial direction in the turned-back portions are respectively positioned on sides of the polygonal shape. A stent can be arranged on an outer periphery of a balloon in the balloon catheter and expands in response to dilation of the balloon.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: August 27, 2019
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Tomoya Komatsu, Noboru Saito