公开(公告)号：US20160119719A1

公开(公告)日：2016-04-28

申请号：US14843460

申请日：2015-09-02

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Yutaka DOSHIDA ,  Yukihiro MATSUI ,  Hiroshi HAMADA

IPC: H04R17/00

CPC classification number: H04R17/00 ,  H04R1/1075 ,  H04R1/24 ,  H04R2217/01

Abstract: In an embodiment, an electroacoustic converter (earphone 100) has an enclosure 41, piezoelectric sounding body 32, electromagnetic sounding body 31, and passage 35. The piezoelectric sounding body 32 includes a vibration plate 321 having a periphery supported directly or indirectly on the enclosure 41, and a piezoelectric element 322 placed at least on one side of the vibration plate 321. The piezoelectric sounding body 32 divides the interior of the enclosure 41 into a first space S1 and a second space S2. The electromagnetic sounding body 31 is placed in the first space S1. A passage 35 is provided in or around the piezoelectric sounding body 32, to connect the first space S1 and second space S2. The electroacoustic converter is capable of obtaining desired frequency characteristics easily.

Abstract translation: 在一个实施例中，电声转换器（耳机100）具有外壳41，压电发声体32，电磁探空体31和通道35.压电发声体32包括振动板321，其具有直接或间接地支撑在外壳上的周边 41和至少设置在振动板321的一侧的压电元件32.压电发声体32将外壳41的内部分割为第一空间S1和第二空间S2。 电磁探测体31放置在第一空间S1中。 通道35设置在压电发声体32内或周围，以连接第一空间S1和第二空间S2。 电声转换器能够容易地获得期望的频率特性。

公开(公告)号：US20210060611A1

公开(公告)日：2021-03-04

申请号：US17007355

申请日：2020-08-31

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Shigeo ISHII ,  Fumihisa ITO ,  Yukihiro MATSUI ,  Hiroshi HAMADA

IPC: B06B1/06 ,  G08B6/00

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.

公开(公告)号：US20190267535A1

公开(公告)日：2019-08-29

申请号：US16277783

申请日：2019-02-15

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Hiroshi HAMADA ,  Yukihiro MATSUI ,  Fumihisa ITO ,  Takashi TOMITA

IPC: H01L41/09 ,  H01L41/047 ,  H01L41/27

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.

公开(公告)号：US20190044053A1

公开(公告)日：2019-02-07

申请号：US16049348

申请日：2018-07-30

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Hiroshi HAMADA ,  Hiroyuki SHIMIZU ,  Sumiaki KISHIMOTO ,  Yukihiro MATSUI ,  Shigeo ISHII ,  Tomohiro HARADA ,  Yukihiro KONISHI

IPC: H01L41/083 ,  H01L41/047 ,  H01L41/09 ,  H01L41/273 ,  H01L41/293 ,  H01L41/257 ,  H01L41/313

Abstract: 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.

公开(公告)号：US20190027678A1

公开(公告)日：2019-01-24

申请号：US16034236

申请日：2018-07-12

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Sumiaki KISHIMOTO ,  Hiroshi HAMADA ,  Hiroyuki SHIMIZU ,  Yukihiro MATSUI ,  Tomohiro HARADA ,  Yukihiro KONISHI

IPC: H01L41/187 ,  H01L41/293

Abstract: 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.

公开(公告)号：US20170222118A1

公开(公告)日：2017-08-03

申请号：US15514793

申请日：2015-08-31

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Takashi TOMITA ,  Shigeo ISHII ,  Hiroshi HAMADA ,  Yutaka DOSHIDA

IPC: H01L41/047 ,  H01L41/113 ,  H04R17/00 ,  H01L41/297 ,  H04R7/04 ,  H01L41/083 ,  H01L41/293

CPC classification number: H01L41/0471 ,  B06B1/0611 ,  H01L41/0831 ,  H01L41/1132 ,  H01L41/293 ,  H01L41/297 ,  H04R7/04 ,  H04R17/00

Abstract: An electroacoustic transducer includes: a polygonal-shaped laminated piezoelectric element including alternately stacked piezoelectric layers and electrode layers, with the piezoelectric layers placed between at least one pair of electrode layers having different polarities; and a circular vibration plate on which the laminated piezoelectric element is placed. Of the piezoelectric layers sandwiched between the at least one pair of electrode layers, the total volume (V) of those effective layers that overlap the at least one pair of electrode layers as viewed from the stacking direction satisfies the condition below: 0.2πR2×ts≦V≦2.0πR2×ts wherein π represents the ratio of the circumference of a circle to its diameter, R represents the radius of the vibration plate, and ts represents the thickness of the vibration plate.

公开(公告)号：US20160119720A1

公开(公告)日：2016-04-28

申请号：US14843476

申请日：2015-09-02

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Yutaka DOSHIDA ,  Yukihiro MATSUI ,  Hiroshi HAMADA

IPC: H04R17/00

CPC classification number: H04R17/00 ,  H04R1/1075 ,  H04R1/2811

Abstract: In an embodiment, an electroacoustic converter (earphone 100) has an enclosure 41, piezoelectric sounding body 32, electromagnetic sounding body 31, and passage 35. The piezoelectric sounding body 32 includes a first vibration plate 321 having a periphery supported directly or indirectly on the enclosure 41, and a piezoelectric element 322 placed at least on one side of the vibration plate 321. The piezoelectric sounding body 32 has a second vibration plate and divides the interior of the enclosure 41 into a first space S1 and a second space S2. The electromagnetic sounding body 31 is placed in the first space S1. The passage 35 is provided in or around the piezoelectric sounding body 32 to connect the first space S1 and second space S2. The electroacoustic converter is capable of obtaining desired frequency characteristics easily.

Abstract translation: 在一个实施例中，电声转换器（耳机100）具有外壳41，压电发声体32，电磁探空体31和通道35.压电发声体32包括第一振动板321，其具有直接或间接支撑在其上的外围 外壳41和至少设置在振动板321的一侧的压电元件32.压电发声体32具有第二振动板，并将外壳41的内部分割为第一空间S1和第二空间S2。 电磁探测体31放置在第一空间S1中。 通道35设置在压电发声体32内或周围，以连接第一空间S1和第二空间S2。 电声转换器能够容易地获得期望的频率特性。