Elastic wave device
    4.
    发明授权
    Elastic wave device 有权
    弹性波装置

    公开(公告)号:US06426584B2

    公开(公告)日:2002-07-30

    申请号:US09800929

    申请日:2001-03-08

    IPC分类号: H01L4108

    摘要: In an elastic wave device, an electrode, which is formed in a comb-like shape and is made of conductive material having a prescribed thickness, is arranged on a substrate of a piezo-electric element containing lithium niobate as a main component. Also, in this elastic wave device, a surface of the substrate is set to a plane which is obtained by rotating a plane perpendicular to a crystal Y-axis of the lithium niobate by an angle ranging from 55 degrees to 57 degrees around a crystal x-axis of the lithium niobate, and a duty ratio (a width w of an electrode finger/an arrangement interval p of a pair of electrode fingers) of each of a plurality of electrode fingers composing the electrode is equal to or higher than 0.4 and is lower than 1.0.

    摘要翻译: 在弹性波装置中,以含有铌酸锂为主要成分的压电元件的基板上配置形成为梳状形状的具有规定厚度的导电材料的电极。 此外,在该弹性波装置中,将基板的表面设定为通过使垂直于铌酸锂的晶体Y轴的平面旋转垂直于晶体x的55度至57度的角度而获得的平面 铌酸锂的ix轴和构成电极的多个电极指的各自的占空比(电极指的宽度w /一对电极指的排列间隔p)等于或高于0.4,并且 低于1.0。

    Elastic wave device
    5.
    发明授权
    Elastic wave device 失效
    弹性波装置

    公开(公告)号:US06674215B1

    公开(公告)日:2004-01-06

    申请号:US09889392

    申请日:2001-07-16

    IPC分类号: H01L4104

    CPC分类号: H03H9/02559

    摘要: There is disclosed an acoustic wave apparatus, constructed in such a manner that a surface rotated in the range of 34° to 41° from a crystal Y axis around the crystal X axis of lithium tantalate is set as the surface of a substrate, a standardized electrode thickness (h/&lgr;) obtained by standardizing a thickness h of an electrode finger constituting at least a part of an interdigital transducer by a wavelength &lgr; of a surface acoustic wave is set to the range of 0.01 to 0.05, and a duty ratio (w/p) of the electrode finger decided based on a width w and an arraying cycle p of the electrode finger is set to the value ranging from 0.6 to just below 1.0.

    摘要翻译: 公开了一种声波装置,其结构是将从钽酸锂的晶体X轴周围的晶体Y轴34°至41°范围内旋转的表面设定为基板表面,标准化 通过将构成至少一部分交叉指型换能器的电极指的厚度h通过声表面波的波长λ标准化得到的电极厚度(h /λ)设定为0.01〜0.05的范围,占空比 将基于电极指的宽度w和排列周期p决定的电极指的w / p设定为从0.6到刚刚低于1.0的值。