ACOUSTIC WAVE DEVICE AND METHOD OF FABRICATING THE SAME

    公开(公告)号:US20180069526A1

    公开(公告)日:2018-03-08

    申请号:US15686621

    申请日:2017-08-25

    发明人: Takashi YAMASHITA

    摘要: An acoustic wave device includes: a mounting substrate; a first wiring layer located on an upper surface of the mounting substrate, the first wiring layer including a first bond region and a first connection region connecting with the first bond region and having a thickness substantially equal to a thickness of the first bond region; an element substrate mounted on the mounting substrate; an acoustic wave element located on a lower surface of the element substrate; and a second wiring layer located on the lower surface of the element substrate, the second wiring layer including a second bond region and a second connection region, the second bond region directly bonding with the first bond region of the first wiring layer, the second connection region connecting the acoustic wave element with the second bond region and having a thickness substantially equal to a thickness of the second bond region.

    PIEZOELECTRIC DEVICE
    7.
    发明申请

    公开(公告)号:US20170345993A1

    公开(公告)日:2017-11-30

    申请号:US15599474

    申请日:2017-05-19

    发明人: KENICHI KIKUCHI

    摘要: A piezoelectric device includes a piezoelectric vibrating piece, a base, a wire, a conductive adhesive, and a buffer layer. The piezoelectric vibrating piece includes excitation electrodes and extraction electrodes at both principal surfaces. The base includes the piezoelectric vibrating piece and a first wiring electrode and a second wiring electrode connected to the extraction electrodes. The wire connects the extraction electrode on a surface opposite to a side of the base among the extraction electrodes to one wiring electrode of the first wiring electrode and the second wiring electrode. The conductive adhesive connects the extraction electrode at the base side among the extraction electrodes to the other wiring electrode among the first wiring electrode and the second wiring electrode. The buffer layer reduces stress of the wire between the extraction electrode to which the wire is connected and the piezoelectric vibrating piece.

    Method of fabricating acoustic wave device
    8.
    发明授权
    Method of fabricating acoustic wave device 有权
    制造声波装置的方法

    公开(公告)号:US09590170B2

    公开(公告)日:2017-03-07

    申请号:US13942951

    申请日:2013-07-16

    发明人: Yohei Shimizu

    摘要: A method of fabricating an acoustic wave device includes: bonding a support substrate to a piezoelectric substrate on which an IDT is to be formed; forming a modified region in the support substrate by irradiation of a laser beam; and cutting the support substrate and the piezoelectric substrate in the modified region, wherein a distance from a boundary face between the support substrate and the piezoelectric substrate to an edge portion of the modified region at the boundary face side is greater than or equal to 20 μm and less than 69 μm.

    摘要翻译: 制造声波器件的方法包括:将支撑衬底接合到要在其上形成IDT的压电衬底; 通过激光束的照射在支撑基板上形成改质区域; 并且在所述改质区域中切割所述支撑基板和所述压电基板,其中,从所述支撑基板与所述压电基板之间的边界面到所述边界面侧的所述改质区域的边缘部的距离大于或等于20μm 小于69μm。

    ULTRASONIC FLOW-METER FOR MEASURING THE FLOW-RATE OF A CHEMICAL-SOLUTION USING AN ELECTROMECHANICAL TRANSFORMATION DEVICE
    9.
    发明申请
    ULTRASONIC FLOW-METER FOR MEASURING THE FLOW-RATE OF A CHEMICAL-SOLUTION USING AN ELECTROMECHANICAL TRANSFORMATION DEVICE 审中-公开
    超声波流量计,用于测量使用电化学转换装置的化学溶液的流量

    公开(公告)号:US20170059378A1

    公开(公告)日:2017-03-02

    申请号:US15338604

    申请日:2016-10-31

    摘要: An electromechanical transformation device for an ultrasonic flow meter comprises an alkaline niobate piezoelectric ceramic composition and a rigid body adhered onto the major surface of the ceramic composition. The ceramic composition is made of crystal structures such as orthorhombic crystals formed at the side where the temperature is lower than the orthorhombic-to-tetragonal phase transition temperature, tetragonal crystals formed at the side where temperature is higher that the orthorhombic-to-tetragonal phase transition temperature as well as at the side where the temperature is lower than the tetragonal-to-cubic phase transition temperature, and the cubic crystals formed at the side where the temperature is higher than the tetragonal-to-cubic phase temperature. Young's modulus of the rigid is 60 GPa or more. THe volume percent of the ceramic composition existing within a range where the distance from the adhesion point of the piezoelectric ceramic composition and the rigid body is 40% or more.

    摘要翻译: 用于超声波流量计的机电转换装置包括碱性铌酸盐压电陶瓷组合物和粘附在陶瓷组合物的主表面上的刚体。 该陶瓷组合物由温度低于正交至四方相转变温度的一侧形成的正交晶体等晶体结构构成,在正方形相对于四方相的温度高的一侧形成四方晶体 转变温度以及温度低于四方晶相立方相温度的一侧,以及形成在温度高于四方相立方相温度的一侧的立方晶体。 刚性的杨氏模量为60GPa以上。 陶瓷组合物的体积百分比存在于距离压电陶瓷组合物和刚性体的粘合点的距离在40%以上的范围内。