Patents by Inventor Fumihisa Ito

Fumihisa Ito 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: 20230095671
    Abstract: A vibration generating device includes: a vibrator; and a piezoelectric actuator. The vibrator has a first main surface and a second main surface on a side opposite to the first main surface. The piezoelectric actuator is joined to the second main surface. A plurality of recessions and projections is formed at equal intervals on the first main surface. The vibration generating device is configured to be capable of presenting a haptic sensation while preventing a contact sound from being generated.
    Type: Application
    Filed: March 1, 2021
    Publication date: March 30, 2023
    Inventors: Fumihisa ITO, Yukihiro MATSUI, Hiroshi HAMADA
  • Patent number: 11616189
    Abstract: A laminated piezoelectric element 10 includes: a laminated body 11 in rectangle shape formed by alternately laminating a plurality of piezoelectric layers 15 and one or more internal electrode(s) 13; a connection electrode 14 connected to one end portion 13a of the internal electrode(s) 13; and an electric field relaxation region 16c or 16d formed discontinuously with regard to the internal electrode(s) 13 in at least one of two corner portions 13c and 13d of the other end portion 13b opposite to the one end portion 13a of the internal electrode(s) 13.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 28, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Fumihisa Ito, Yukihiro Matsui
  • Patent number: 11571712
    Abstract: Provided is a vibration panel including an inner member, a first outer member, a second outer member, a piezoelectric actuator, an actuator bonding layer, and a filler. The inner member includes first and second main surfaces. The first outer member includes third and fourth main surfaces, the third main surface including a first region and a second region. The second outer member includes fifth and sixth main surfaces, the fifth main surface including a third region and a fourth region. The piezoelectric actuator causes vibration. The actuator bonding layer is disposed between the piezoelectric actuator and the second region and bonds the piezoelectric actuator to the second region. The filler fills a space between the second region and the fourth region and covers the piezoelectric actuator.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: February 7, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Shigeo Ishii, Fumihisa Ito, Yukihiro Matsui, Hiroshi Hamada
  • Patent number: 11557712
    Abstract: A vibration generating device 10 includes: a diaphragm 11; and a first piezoelectric actuator 12 and a second piezoelectric actuator 13 attached on an upper surface 11a and a lower surface 11b of the diaphragm 11, respectively, so as to sandwich the diaphragm 11 therebetween in a vicinity of an end surface of the diaphragm 11, wherein, in a top view of the upper surface 11a of the diaphragm 11, the first piezoelectric actuator 12 is disposed at a position shifted with respect to the second piezoelectric actuator 13.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: January 17, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hiroshi Hamada, Yukihiro Matsui, Fumihisa Ito, Takashi Tomita
  • Patent number: 11478821
    Abstract: A vibration generating device 90 includes: a housing 30 in a rectangular shape as viewed in a first direction, the housing 30 comprising: a first support portion 31 extending along a first side in a second direction perpendicular to the first direction and; a second support portion 32 extending along a second side opposite to the first side in the second direction; a panel 60 supported by the first support portion and the second support portion; and a piezoelectric element 11 attached to the panel in such a manner as to be shifted in the second direction toward the first side with respect to a central portion of the panel, wherein a width in the second direction of a portion of the panel supported by the first support portion is larger than a width in the second direction of a portion of the panel supported by the second support portion.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: October 25, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hiroshi Hamada, Yukihiro Matsui, Fumihisa Ito, Takashi Tomita
  • Patent number: 11469363
    Abstract: A piezoelectric actuator 10 includes: a piezoelectric element 11; an external electrode 12 covering partially a first surface 11a of the piezoelectric element 11 in a first direction; a wiring member 14; and a conductive joining member 20 joining the wiring member 14 to the external electrode 12, wherein the conductive joining member 20 has an air gap 70 formed between the external electrode 12 and the wiring member 14 in a region overlapping with the wiring member 14 as viewed in the first direction, and wherein the conductive joining member 20 extends to an edge 21 of the external electrode 12 or extends to the first surface 11a of the piezoelectric element 11 beyond the edge 21 of the external electrode 12.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 11, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Fumihisa Ito, Yukihiro Matsui
  • Publication number: 20210060611
    Abstract: Provided is a vibration panel including an inner member, a first outer member, a second outer member, a piezoelectric actuator, an actuator bonding layer, and a filler. The inner member includes first and second main surfaces. The first outer member includes third and fourth main surfaces, the third main surface including a first region and a second region. The second outer member includes fifth and sixth main surfaces, the fifth main surface including a third region and a fourth region. The piezoelectric actuator causes vibration. The actuator bonding layer is disposed between the piezoelectric actuator and the second region and bonds the piezoelectric actuator to the second region. The filler fills a space between the second region and the fourth region and covers the piezoelectric actuator.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 4, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shigeo ISHII, Fumihisa ITO, Yukihiro MATSUI, Hiroshi HAMADA
  • Patent number: 10763819
    Abstract: In an embodiments, an electronic device 1 has a panel 20 of roughly rectangular shape, a housing 10 that holds the panel 20, and a piezoelectric element 30 installed on the rear face side of the panel 20, wherein the panel 20 is bonded to the housing 10 with its edges supported on the housing 10, and it also has at least one side 21 not bonded to the housing 10 (non-bonded side). The electronic device is capable of causing an entire panel to vibrate in a stable manner.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: September 1, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Keiichi Kobayashi, Yukihiro Matsui, Fumihisa Ito, Shigeo Ishii
  • Publication number: 20190280183
    Abstract: A laminated piezoelectric element 10 includes: a laminated body 11 in rectangle shape formed by alternately laminating a plurality of piezoelectric layers 15 and one or more internal electrode(s) 13; a connection electrode 14 connected to one end portion 13a of the internal electrode(s) 13; and an electric field relaxation region 16c or 16d formed discontinuously with regard to the internal electrode(s) 13 in at least one of two corner portions 13c and 13d of the other end portion 13b opposite to the one end portion 13a of the internal electrode(s) 13.
    Type: Application
    Filed: February 26, 2019
    Publication date: September 12, 2019
    Inventors: Fumihisa ITO, Yukihiro MATSUI
  • Publication number: 20190267535
    Abstract: A vibration generating device 10 includes: a diaphragm 11; and a first piezoelectric actuator 12 and a second piezoelectric actuator 13 attached on an upper surface 11a and a lower surface 11b of the diaphragm 11, respectively, so as to sandwich the diaphragm 11 therebetween in a vicinity of an end surface of the diaphragm 11, wherein, in a top view of the upper surface 11a of the diaphragm 11, the first piezoelectric actuator 12 is disposed at a position shifted with respect to the second piezoelectric actuator 13.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 29, 2019
    Inventors: Hiroshi HAMADA, Yukihiro MATSUI, Fumihisa ITO, Takashi TOMITA
  • Publication number: 20190267533
    Abstract: A piezoelectric actuator 10 includes: a piezoelectric element 11; an external electrode 12 covering partially a first surface 11a of the piezoelectric element 11 in a first direction; a wiring member 14; and a conductive joining member 20 joining the wiring member 14 to the external electrode 12, wherein the conductive joining member 20 has an air gap 70 formed between the external electrode 12 and the wiring member 14 in a region overlapping with the wiring member 14 as viewed in the first direction, and wherein the conductive joining member 20 extends to an edge 21 of the external electrode 12 or extends to the first surface 11a of the piezoelectric element 11 beyond the edge 21 of the external electrode 12.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 29, 2019
    Inventors: Fumihisa ITO, Yukihiro MATSUI
  • Publication number: 20190262864
    Abstract: A vibration generating device 90 includes: a housing 30 in a rectangular shape as viewed in a first direction, the housing 30 comprising: a first support portion 31 extending along a first side in a second direction perpendicular to the first direction and; a second support portion 32 extending along a second side opposite to the first side in the second direction; a panel 60 supported by the first support portion and the second support portion; and a piezoelectric element 11 attached to the panel in such a manner as to be shifted in the second direction toward the first side with respect to a central portion of the panel, wherein a width in the second direction of a portion of the panel supported by the first support portion is larger than a width in the second direction of a portion of the panel supported by the second support portion.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 29, 2019
    Inventors: Hiroshi HAMADA, Yukihiro MATSUI, Fumihisa ITO, Takashi TOMITA
  • Publication number: 20190265795
    Abstract: A vibration generating device 90 for non-acoustic applications, includes: a piezoelectric element 11; a diaphragm 82 attached to the piezoelectric element 11 on a first side in a first direction; and a first frame body 84 provided along an outer peripheral portion of the diaphragm 82 to transmit vibration of the diaphragm 82 to a vibration object member 60, wherein the first frame body 84 is connectable to the vibration object member 60 in such a manner that the first frame body 84, the diaphragm 82 and the vibration object member 60 form an enclosed space 64.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 29, 2019
    Inventors: Shigeo ISHII, Takashi TOMITA, Hiroshi HAMADA, Fumihisa ITO, Yukihiro MATSUI
  • Publication number: 20170331452
    Abstract: In an embodiments, an electronic device 1 has a panel 20 of roughly rectangular shape, a housing 10 that holds the panel 20, and a piezoelectric element 30 installed on the rear face side of the panel 20, wherein the panel 20 is bonded to the housing 10 with its edges supported on the housing 10, and it also has at least one side 21 not bonded to the housing 10 (non-bonded side). The electronic device is capable of causing an entire panel to vibrate in a stable manner.
    Type: Application
    Filed: October 5, 2015
    Publication date: November 16, 2017
    Inventors: Keiichi KOBAYASHI, Yukihiro MATSUI, Fumihisa ITO, Shigeo ISHII
  • Patent number: 9654881
    Abstract: An electroacoustic transducer has a housing, piezoelectric speaker, dynamic speaker, and support member. The piezoelectric speaker includes a vibration plate having a first surface and a second surface on the opposite side of the first surface, as well as a piezoelectric element joined to at least one of the first surface and second surface, and divides the interior of the housing into a first space facing the first surface and a second space facing the second surface. The dynamic speaker is placed in the first space. The support member is constituted by a part of the housing or by a member different from the housing, has a supporting part facing the first surface or second surface, and supports the periphery of the first surface or second surface with the supporting part.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: May 16, 2017
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Shigeo Ishii, Takashi Tomita, Fumihisa Ito, Yutaka Doshida, Yoshiyuki Watanabe
  • Patent number: 9601682
    Abstract: In an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, and support member 23. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11. The housing houses the piezoelectric speaker 20. The support member 23 is constituted by a part of the housing or by a separate member, and supports the vibration plate 11 in multiple areas along the periphery 111. The electroacoustic transducer can offer excellent high-frequency characteristics.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: March 21, 2017
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Shigeo Ishii, Takashi Tomita, Fumihisa Ito, Yutaka Doshida, Yoshiyuki Watanabe
  • Publication number: 20160155926
    Abstract: In an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, and support member 23. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11. The housing houses the piezoelectric speaker 20. The support member 23 is constituted by a part of the housing or by a separate member, and supports the vibration plate 11 in multiple areas along the periphery 111. The electroacoustic transducer can offer excellent high-frequency characteristics.
    Type: Application
    Filed: October 19, 2015
    Publication date: June 2, 2016
    Inventors: Shigeo ISHII, Takashi TOMITA, Fumihisa ITO, Yutaka DOSHIDA, Yoshiyuki WATANABE
  • Publication number: 20160157021
    Abstract: An electroacoustic transducer has a housing, piezoelectric speaker, dynamic speaker, and support member. The piezoelectric speaker includes a vibration plate having a first surface and a second surface on the opposite side of the first surface, as well as a piezoelectric element joined to at least one of the first surface and second surface, and divides the interior of the housing into a first space facing the first surface and a second space facing the second surface. The dynamic speaker is placed in the first space. The support member is constituted by a part of the housing or by a member different from the housing, has a supporting part facing the first surface or second surface, and supports the periphery of the first surface or second surface with the supporting part.
    Type: Application
    Filed: November 6, 2015
    Publication date: June 2, 2016
    Inventors: Shigeo ISHII, Takashi TOMITA, Fumihisa ITO, Yutaka DOSHIDA, Yoshiyuki WATANABE
  • Publication number: 20160157020
    Abstract: In an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, support member 73, and elastically deformable adhesive layer 74. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11. The housing houses the piezoelectric speaker 20. The support member 73 is constituted by a part of the housing or by a separate member, and supports the periphery 111. The adhesive layer 74 is provided between the periphery 111 and support member 73. The electroacoustic transducer can offer excellent high-frequency characteristics.
    Type: Application
    Filed: November 2, 2015
    Publication date: June 2, 2016
    Inventors: Shigeo ISHII, Takashi TOMITA, Fumihisa ITO, Yutaka DOSHIDA, Yoshiyuki WATANABE
  • Patent number: 7545459
    Abstract: A display apparatus includes a flat display panel, and a housing which surrounds the display panel. The housing includes a backboard portion facing the display panel and a sound emitting portion. A vibrating plate is arranged in a region corresponding to the sound emitting portion between the display panel and the backboard portion of the housing. A first spacer is attached to a rim portion of one surface of the vibrating plate, the first spacer being interposed between the vibrating plate and one of the backboard portion of the housing and the display panel. A second spacer is attached to a rim portion of the other surface of the vibrating plate, the second spacer being interposed between vibrating plate and the other of the backboard portion of the housing and the display panel. The first and second spacers are made of materials having different degree of hardness.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: June 9, 2009
    Assignees: Casio Computer Co., Ltd., Taiyo Yuden Co., Ltd.
    Inventors: Atsushi Fujiwara, Yukihiro Matsui, Hisayoshi Matsui, Fumihisa Ito