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    • 42. 发明授权
    • Piezoelectric stack transducer
    • 压电叠层传感器
    • US09491550B2
    • 2016-11-08
    • US14100299
    • 2013-12-09
    • Foundation of Soongsil University-Industry Cooperation
    • Jin Oh KimDae Jong Kim
    • H03H9/15H04R17/10H04R1/24
    • H04R17/10H03H9/15H04R1/24
    • Provided is a piezoelectric stack transducer. In a transducer portion, a plurality of piezoelectric transducers which output maximum amplitude at different frequencies are continuously stacked. A stacked electrode portion is provided on both surfaces of each of the plurality of continuously stacked piezoelectric transducers and supplies an electric signal so that vibration is generated. In this case, the plurality of piezoelectric transducers have different diameters. According to the present invention, it is possible to implement a piezoelectric stack transducer which exhibits constant amplitude (output) at different frequencies by piezoelectric transducers exhibiting different amplitudes at respective frequencies according to natural frequencies supplementing amplitude of a different piezoelectric transducer.
    • 提供了一种压电叠层传感器。 在换能器部分中,以不同频率输出最大振幅的多个压电换能器被连续堆叠。 在多个连续堆叠的压电换能器的每一个的两个表面上设置堆叠的电极部分,并且提供电信号以产生振动。 在这种情况下,多个压电换能器具有不同的直径。 根据本发明,可以实现按照补偿不同压电换能器的振幅的固有频率,在各个频率下呈现不同振幅的压电换能器在不同频率下呈现恒定振幅(输出)的压电叠层换能器。
    • 46. 发明授权
    • Three dimensional piezoelectric MEMS
    • 三维压电MEMS
    • US08966993B2
    • 2015-03-03
    • US13719588
    • 2012-12-19
    • U.S. Army Research Laboratory
    • Jeffrey S. PulskampRonald G. Polcawich
    • G01N3/00H03H9/205G01L1/00H03H3/02H03H9/15
    • H03H9/205G01L1/005G01L1/16H03H3/02H03H2009/155Y10T29/42
    • Method and apparatus for a piezoelectric apparatus are provided. In some embodiments, a method for fabricating a piezoelectric device may include etching a series of vertical trenches in a top substrate portion, depositing a first continuous conductive layer over the trenches and substrate, depositing a continuous piezoelectric layer over the first continuous conductive layer such that the piezoelectric material has trenches and sidewalls, depositing a second continuous conductive layer over the continuous piezoelectric layer, etching through the vertical trenches of the first continuous conductive layer, continuous piezoelectric layer, second continuous conductive layer, and top substrate portion into a bottom substrate portion, etching a series of horizontal trenches in the bottom substrate portion such that the horizontal trenches and vertical trenches occupy a continuous free space and allow movement of a piezoelectric MEMS device created by the above method in three dimensions.
    • 提供了压电装置的方法和装置。 在一些实施例中,用于制造压电器件的方法可以包括蚀刻顶部衬底部分中的一系列垂直沟槽,在沟槽和衬底上沉积第一连续导电层,在第一连续导电层上沉积连续的压电层,使得 压电材料具有沟槽和侧壁,在连续压电层上沉积第二连续导电层,通过第一连续导电层,连续压电层,第二连续导电层和顶部衬底部分的垂直沟槽蚀刻成底部衬底部分 蚀刻底部衬底部分中的一系列水平沟槽,使得水平沟槽和垂直沟槽占据连续的自由空间,并允许通过上述方法在三维中产生的压电MEMS器件的移动。
    • 47. 发明授权
    • Piezoelectric vibrating piece and piezoelectric device
    • 压电振动片和压电器件
    • US08946975B2
    • 2015-02-03
    • US13662537
    • 2012-10-28
    • Nihon Dempa Kogyo Co., Ltd.
    • Takumi ArijiTakehiro Takahashi
    • H01L41/053H03H9/02H03H9/15
    • H03H9/02H03H9/1021H03H9/15H03H9/177
    • A piezoelectric vibrating piece includes an excitation unit in a rectangular shape, a framing portion, and a connecting portion. The excitation unit includes two principal surfaces, a pair of excitation electrodes on the principal surfaces, a first side extending in a first direction, and a second side extending in a second direction. The second side is longer than the first side, and is perpendicular to the first direction. The framing portion surrounds the excitation unit. The connecting portion connects the excitation unit to the framing portion. The connecting portion has a third side which is connected to the first side and extends in the first direction and a fourth side which is connected to the framing portion and extends in the first direction. A thickness of the connecting portion is thinner than that of the framing portion. The third side has a different length from that of the fourth side.
    • 压电振动片包括矩形的激励单元,框架部分和连接部分。 激励单元包括两个主表面,主表面上的一对激励电极,沿第一方向延伸的第一侧和沿第二方向延伸的第二侧。 第二侧比第一侧长,并且与第一方向垂直。 框架部分围绕激励单元。 连接部分将激励单元连接到框架部分。 连接部分具有连接到第一侧并沿着第一方向延伸的第三侧和连接到框架部分并沿着第一方向延伸的第四侧。 连接部分的厚度比框架部分的厚度薄。 第三面具有与第四面不同的长度。