Patents by Inventor Yukihiro Matsui
Yukihiro Matsui 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: 11744156Abstract: A multilayer piezoelectric element includes a ceramic body formed by a piezoelectric ceramic, and having first and second end face facing a longitudinal direction, first and second principal faces facing a thickness direction perpendicular to the longitudinal direction. A pair of external electrodes cover the first and second end faces, extend from the first and second end faces onto the first principal face via ridge parts connecting the end faces with the principal faces, and project in the thickness direction on the first principal face. Multiple internal electrodes are stacked inside the ceramic body and are connected alternately to the pair of external electrodes along the thickness direction. A surface electrode is provided on at least one of the first and second principal faces, and connected to the external electrode different from the one to which the internal electrode adjacent in the thickness direction is connected.Type: GrantFiled: July 30, 2018Date of Patent: August 29, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Hiroshi Hamada, Hiroyuki Shimizu, Sumiaki Kishimoto, Yukihiro Matsui, Shigeo Ishii, Tomohiro Harada, Yukihiro Konishi
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Publication number: 20230095671Abstract: 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: ApplicationFiled: March 1, 2021Publication date: March 30, 2023Inventors: Fumihisa ITO, Yukihiro MATSUI, Hiroshi HAMADA
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Patent number: 11616189Abstract: 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: GrantFiled: February 26, 2019Date of Patent: March 28, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Fumihisa Ito, Yukihiro Matsui
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Patent number: 11571712Abstract: 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: GrantFiled: August 31, 2020Date of Patent: February 7, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Shigeo Ishii, Fumihisa Ito, Yukihiro Matsui, Hiroshi Hamada
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Patent number: 11557712Abstract: 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: GrantFiled: February 15, 2019Date of Patent: January 17, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Hiroshi Hamada, Yukihiro Matsui, Fumihisa Ito, Takashi Tomita
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Patent number: 11478821Abstract: 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: GrantFiled: February 14, 2019Date of Patent: October 25, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Hiroshi Hamada, Yukihiro Matsui, Fumihisa Ito, Takashi Tomita
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Patent number: 11469363Abstract: 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: GrantFiled: February 15, 2019Date of Patent: October 11, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Fumihisa Ito, Yukihiro Matsui
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Patent number: 11430940Abstract: A multilayer piezoelectric element includes a ceramic base body, a pair of external electrodes, multiple internal electrodes, and surface electrodes. The pair of external electrodes cover a pair of end faces and extend from the pair of end faces along a pair of principal faces and a pair of side faces. The multiple internal electrodes are stacked inside the ceramic base body along the thickness direction, and are connected alternately to one or the other of the pair of external electrodes along the thickness direction. The surface electrodes extend from the pair of external electrodes along the pair of principal faces, and are each divided in the longitudinal direction at a position near, of the pair of external electrodes, the external electrode to which the internal electrode adjacent to the principal face is connected.Type: GrantFiled: July 12, 2018Date of Patent: August 30, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Sumiaki Kishimoto, Hiroshi Hamada, Hiroyuki Shimizu, Yukihiro Matsui, Tomohiro Harada, Yukihiro Konishi
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Patent number: 11209905Abstract: A panel includes a vibration plate having a generally rectangular shape; and a piezoelectric actuator that is provided on a main surface of the vibration plate and causes the vibration plate to vibrate, in which the vibration plate is configured such that a length x in mm of a long side of the vibration plate and logarithmic decrement y of the vibration plate satisfy Expression 1 below: y?32.6x?1 ??(Expression 1).Type: GrantFiled: August 12, 2020Date of Patent: December 28, 2021Assignee: TAIYO YUDEN CO., LTD.Inventors: Hiroshi Hamada, Yukihiro Matsui, Takashi Tomita
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Publication number: 20210060611Abstract: 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: ApplicationFiled: August 31, 2020Publication date: March 4, 2021Applicant: TAIYO YUDEN CO., LTD.Inventors: Shigeo ISHII, Fumihisa ITO, Yukihiro MATSUI, Hiroshi HAMADA
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Publication number: 20210048888Abstract: A panel includes a vibration plate having a generally rectangular shape; and a piezoelectric actuator that is provided on a main surface of the vibration plate and causes the vibration plate to vibrate, in which the vibration plate is configured such that a length x in mm of a long side of the vibration plate and logarithmic decrement y of the vibration plate satisfy Expression 1 below: y?32.6x?1 ??(Expression 1).Type: ApplicationFiled: August 12, 2020Publication date: February 18, 2021Applicant: TAIYO YUDEN CO., LTD.Inventors: Hiroshi HAMADA, Yukihiro MATSUI, Takashi TOMITA
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Patent number: 10763819Abstract: 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: GrantFiled: October 5, 2015Date of Patent: September 1, 2020Assignee: TAIYO YUDEN CO., LTD.Inventors: Keiichi Kobayashi, Yukihiro Matsui, Fumihisa Ito, Shigeo Ishii
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Publication number: 20190280183Abstract: 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: ApplicationFiled: February 26, 2019Publication date: September 12, 2019Inventors: Fumihisa ITO, Yukihiro MATSUI
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Publication number: 20190265795Abstract: 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: ApplicationFiled: February 14, 2019Publication date: August 29, 2019Inventors: Shigeo ISHII, Takashi TOMITA, Hiroshi HAMADA, Fumihisa ITO, Yukihiro MATSUI
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Publication number: 20190267535Abstract: 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: ApplicationFiled: February 15, 2019Publication date: August 29, 2019Inventors: Hiroshi HAMADA, Yukihiro MATSUI, Fumihisa ITO, Takashi TOMITA
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Publication number: 20190267533Abstract: 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: ApplicationFiled: February 15, 2019Publication date: August 29, 2019Inventors: Fumihisa ITO, Yukihiro MATSUI
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Publication number: 20190262864Abstract: 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: ApplicationFiled: February 14, 2019Publication date: August 29, 2019Inventors: Hiroshi HAMADA, Yukihiro MATSUI, Fumihisa ITO, Takashi TOMITA
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Publication number: 20190044053Abstract: A multilayer piezoelectric element includes a ceramic body formed by a piezoelectric ceramic, and having first and second end face facing a longitudinal direction, first and second principal faces facing a thickness direction perpendicular to the longitudinal direction. A pair of external electrodes cover the first and second end faces, extend from the first and second end faces onto the first principal face via ridge parts connecting the end faces with the principal faces, and project in the thickness direction on the first principal face. Multiple internal electrodes are stacked inside the ceramic body and are connected alternately to the pair of external electrodes along the thickness direction. A surface electrode is provided on at least one of the first and second principal faces, and connected to the external electrode different from the one to which the internal electrode adjacent in the thickness direction is connected.Type: ApplicationFiled: July 30, 2018Publication date: February 7, 2019Inventors: Hiroshi HAMADA, Hiroyuki SHIMIZU, Sumiaki KISHIMOTO, Yukihiro MATSUI, Shigeo ISHII, Tomohiro HARADA, Yukihiro KONISHI
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Publication number: 20190027678Abstract: A multilayer piezoelectric element includes a ceramic base body, a pair of external electrodes, multiple internal electrodes, and surface electrodes. The pair of external electrodes cover a pair of end faces and extend from the pair of end faces along a pair of principal faces and a pair of side faces. The multiple internal electrodes are stacked inside the ceramic base body along the thickness direction, and are connected alternately to one or the other of the pair of external electrodes along the thickness direction. The surface electrodes extend from the pair of external electrodes along the pair of principal faces, and are each divided in the longitudinal direction at a position near, of the pair of external electrodes, the external electrode to which the internal electrode adjacent to the principal face is connected.Type: ApplicationFiled: July 12, 2018Publication date: January 24, 2019Inventors: Sumiaki KISHIMOTO, Hiroshi HAMADA, Hiroyuki SHIMIZU, Yukihiro MATSUI, Tomohiro HARADA, Yukihiro KONISHI
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Patent number: 10165371Abstract: In an embodiment, an electronic device 1 has a panel 20, a housing 10 that holds the panel 20, and a piezoelectric element 30 installed on the rear side of the panel 20, wherein the piezoelectric element 30 is installed at a position that allows for the vibration amplitude of the panel 20 to become the highest on the side closer to the center of the panel 20 in the longitudinal direction from the installed position of the piezoelectric element 30. The electronic device is capable of causing an entire panel to vibrate in a stable manner.Type: GrantFiled: September 30, 2015Date of Patent: December 25, 2018Assignee: TAIYO YUDEN CO., LTD.Inventors: Shigeo Ishii, Yukihiro Matsui, Hiroshi Hamada, Keiichi Kobayashi