Boundary acoustic wave device and method for manufacturing the same
    2.
    发明授权
    Boundary acoustic wave device and method for manufacturing the same 有权
    边界声波装置及其制造方法

    公开(公告)号:US07902717B2

    公开(公告)日:2011-03-08

    申请号:US12412446

    申请日:2009-03-27

    IPC分类号: H01L41/083

    摘要: A boundary acoustic wave device includes a piezoelectric substance, a dielectric substance laminated on the piezoelectric substance, and an electrode film disposed at a boundary between the piezoelectric substance and a dielectric substance, the device utilizing a boundary acoustic wave propagating along the boundary, wherein the electrode film is any one Au alloy electrode film of an Au alloy electrode film including Cu at a ratio of about 0.01% to about 4.8% by weight, an Au alloy electrode film including Pd at a ratio of about 0.01% to about 6.8% by weight, and an Au alloy electrode film including Ni at a ratio of about 0.01% to about 3.5% by weight.

    摘要翻译: 弹性边界波装置包括:压电体,层叠在压电体上的电介质,以及配置在压电体和电介质之间的边界的电极膜,利用沿边界传播的边界声波, 电极膜是包含比例为约0.01〜4.8重量%的Cu的Au合金电极膜的任何一个Au合金电极膜,包含比例为约0.01〜6.8%的Pd的Au合金电极膜, 以及包含Ni的Au合金电极膜,其比例为约0.01重量%至约3.5重量%。

    ACOUSTIC WAVE DEVICE AND METHOD FOR MANUFACTURING THE SAME
    5.
    发明申请
    ACOUSTIC WAVE DEVICE AND METHOD FOR MANUFACTURING THE SAME 有权
    声波装置及其制造方法

    公开(公告)号:US20100301700A1

    公开(公告)日:2010-12-02

    申请号:US12864073

    申请日:2008-11-26

    IPC分类号: H01L41/04 H01L41/22

    CPC分类号: H03H3/10 Y10T29/42

    摘要: Provided are an acoustic wave device and a method for manufacturing the same, the acoustic wave device being effectively prevented from expanding and contracting due to temperature change and having a small frequency shift. The acoustic wave device of the present invention has a piezoelectric substrate (1) having an IDT (2) formed on one principal surface of the piezoelectric substrate (1), and a thermal spray film (3) formed on an opposite principal surface (1b) of the piezoelectric substrate (1), the thermal spray film being of a material having a smaller linear thermal expansion coefficient than the piezoelectric substrate (1) and having grain boundaries and pores (4), at least a part of which is filled with a filling material (5).

    摘要翻译: 提供一种声波装置及其制造方法,能够有效地防止声波装置由于温度变化而发生膨胀和收缩,并具有小的频移。 本发明的声波元件具有在压电基板(1)的一个主面上形成有IDT(2)的压电基板(1)和形成在相对的主面(1b)上的热喷涂膜 ),所述热喷涂膜是具有比所述压电基板(1)更小的线性热膨胀系数并且具有晶界和孔(4)的材料,所述材料的至少一部分填充有 填充材料(5)。

    Method of forming electrode pattern of surface acoustic wave device
    7.
    发明授权
    Method of forming electrode pattern of surface acoustic wave device 有权
    形成表面声波装置电极图案的方法

    公开(公告)号:US06760960B2

    公开(公告)日:2004-07-13

    申请号:US10246624

    申请日:2002-09-19

    IPC分类号: H04R1700

    摘要: A method of forming an electrode pattern of a surface acoustic wave device easily and reliably prevents the occurrence of an abnormality in the shape of a resist pattern. In the electrode pattern forming method, a resist layer is formed on a top surface of a piezoelectric substrate, and then exposed to ultraviolet rays through a photomask provided above the top surface of the piezoelectric substrate to form a resist pattern on the surface of the piezoelectric substrate. Furthermore, a conductor film is formed on the top surface of the piezoelectric substrate, and the resist pattern is removed by a liftoff method to form an electrode pattern of the surface acoustic wave device. Exposure is performed using ultraviolet rays having a wavelength which is completely absorbed into the piezoelectric substrate without reaching the bottom surface of the piezoelectric substrate.

    摘要翻译: 形成表面声波装置的电极图案的方法容易且可靠地防止抗蚀剂图案的形状发生异常。 在电极图案形成方法中,在压电基板的上表面上形成抗蚀剂层,然后通过设置在压电基板的顶表面上方的光掩模进行紫外线曝光,以在压电基板的表面上形成抗蚀剂图案 基质。 此外,在压电基板的顶面上形成导体膜,通过剥离法除去抗蚀剂图案,形成表面声波装置的电极图案。 使用具有完全吸收到压电基板中的波长的紫外线进行曝光,而不到达压电基板的底面。

    Acoustic wave device and method for manufacturing the same
    8.
    发明授权
    Acoustic wave device and method for manufacturing the same 有权
    声波装置及其制造方法

    公开(公告)号:US08319394B2

    公开(公告)日:2012-11-27

    申请号:US12864073

    申请日:2008-11-26

    IPC分类号: H03H9/25

    CPC分类号: H03H3/10 Y10T29/42

    摘要: Provided are an acoustic wave device and a method for manufacturing the same, the acoustic wave device being effectively prevented from expanding and contracting due to temperature change and having a small frequency shift. The acoustic wave device of the present invention has a piezoelectric substrate (1) having an IDT (2) formed on one principal surface of the piezoelectric substrate (1), and a thermal spray film (3) formed on an opposite principal surface (1b) of the piezoelectric substrate (1), the thermal spray film being of a material having a smaller linear thermal expansion coefficient than the piezoelectric substrate (1) and having grain boundaries and pores (4), at least a part of which is filled with a filling material (5).

    摘要翻译: 提供一种声波装置及其制造方法,能够有效地防止声波装置由于温度变化而发生膨胀和收缩,并具有小的频移。 本发明的声波元件具有在压电基板(1)的一个主面上形成有IDT(2)的压电基板(1)和形成在相对的主面(1b)上的热喷涂膜 ),所述热喷涂膜是具有比所述压电基板(1)更小的线性热膨胀系数并且具有晶界和孔(4)的材料,所述材料的至少一部分填充有 填充材料(5)。

    Method for manufacturing boundary acoustic wave device
    9.
    发明授权
    Method for manufacturing boundary acoustic wave device 有权
    制造声弹波装置的方法

    公开(公告)号:US08099853B2

    公开(公告)日:2012-01-24

    申请号:US12504843

    申请日:2009-07-17

    IPC分类号: H04R31/00

    摘要: A method for manufacturing a boundary acoustic wave device prevents formation of discontinuous portions in a dielectric film without a significant decrease in the thickness of an IDT when the dielectric film is formed by deposition and without deterioration of electrical characteristics. The method includes the steps of forming an IDT on a piezoelectric substrate, forming a lower dielectric film so as to cover the IDT, conducting a planarizing step so as to smooth the rough surface of the lower dielectric film, and forming an upper dielectric film so as to cover the lower dielectric film of which the rough surface is smoothed.

    摘要翻译: 声界面波装置的制造方法通过沉积形成电介质膜并且不会劣化电气特性,可防止在电介质膜中形成不连续部分而不会使IDT的厚度显着降低。 该方法包括以下步骤:在压电基片上形成IDT,形成下电介质膜以覆盖IDT,进行平面化步骤,使下电介质膜的粗糙表面平滑,并形成上电介质膜 以覆盖粗糙表面平滑的下电介质膜。