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    • 1. 发明授权
    • Method and apparatus for frequency control of piezoelectric components
    • 压电元件频率控制方法及装置
    • US06458285B1
    • 2002-10-01
    • US09570748
    • 2000-05-13
    • Kiyoshi IyamaHiroki KitanoTetsuo Tatsumi
    • Kiyoshi IyamaHiroki KitanoTetsuo Tatsumi
    • B44C122
    • H03H3/04H03H2003/0478
    • A frequency control apparatus including a shielding board that is provided with a window for exposing some or all of a plurality of electrodes disposed on a piezoelectric substrate, and a shutter for opening and closing the window. An aperture pattern board is provided between the shielding board and a piezoelectric resonator. On the aperture pattern board, combinations of apertures are provided which correspond to the A electrodes exposed through the window on the shielding board at one time. After measuring the frequencies for respective elements and measuring the variations from the target frequency, the suitable pattern of apertures is selected from the aperture pattern board according to the amount of variations, and then the frequency control is carried out only on the elements selected through the apertures.
    • 一种频率控制装置,包括:屏蔽板,其设置有用于暴露设置在压电基板上的多个电极的一些或全部的窗口;以及用于打开和关闭窗口的快门。 在屏蔽板和压电谐振器之间设置孔径图案板。 在孔径图案板上,提供与一次通过屏蔽板上的窗户暴露的A电极相对应的孔的组合。 在测量各个元件的频率并测量目标频率的变化之后,根据变化量从孔径图案板中选择合适的孔径图案,然后仅对通过 孔。
    • 3. 发明授权
    • Piezoelectric resonator and method of adjusting resonant frequency
thereof
    • 压电谐振器及调谐谐振频率的方法
    • US6111480A
    • 2000-08-29
    • US110304
    • 1998-07-06
    • Kiyoshi IyamaToshihiko Unami
    • Kiyoshi IyamaToshihiko Unami
    • H03H9/02H03H3/04H03H9/05H03H9/10H03H9/17H03H9/205H03H9/15H03H9/54
    • H03H9/1014H03H3/04H03H9/178H03H2003/0414
    • A piezoelectric resonator having a small spurious resonance and a large difference .increment.F between the resonant frequency and the antiresonant frequency is constructed that a resonant frequency or antiresonant frequency can be easily and accurately adjusted to a low frequency. The piezoelectric resonator has a base member which includes a plurality of laminated piezoelectric layers and a plurality of inner electrodes disposed substantially perpendicularly to the longitudinal direction of the base member. The plurality of piezoelectric layers are polarized in the longitudinal direction of the base member. A first external electrode and a second external electrode are located on a surface of the base member and connected to the plurality of electrodes. The resonant frequency of the piezoelectric resonator is adjusted by cutting an intermediate portion in the longitudinal direction of the base member.
    • 构成了谐振频率和反谐振频率之间具有小的寄生谐振和较大差异INCREMENT F的压电谐振器,其可以将谐振频率或反谐振频率容易且准确地调节到低频。 压电谐振器具有包括多个层叠压电体层和与基体的长度方向大致垂直地配置的多个内部电极的基材。 多个压电层在基体的长度方向上极化。 第一外部电极和第二外部电极位于基底部件的表面上并与多个电极连接。 压电谐振器的谐振频率通过沿着基底构件的纵向切割中间部分来调节。
    • 4. 发明授权
    • Piezoelectric electroacoustic transducer and manufacturing method of the same
    • 压电式电声换能器及其制造方法相同
    • US06912288B2
    • 2005-06-28
    • US10173032
    • 2002-06-18
    • Mikio NakashimaSachihito NakafukuKiyoshi Iyama
    • Mikio NakashimaSachihito NakafukuKiyoshi Iyama
    • H01L41/047H01L41/083H01L41/09H01L41/22H01L41/297H04R17/00H04R25/00
    • H04R17/00
    • A piezoelectric electroacoustic transducer, including a plurality of piezoelectric layers deposited to define a deposited product, flexurally vibrates the deposited product by polarizing the entire piezoelectric ceramic layers in the same thickness direction and also by applying an alternating signal between external electrodes disposed on the front/rear major surfaces of the deposited product and an internal electrode disposed between the ceramic layers. A dummy electrode is provided between the ceramic layers outside the internal electrode via a gap, and a portion of the internal electrode is exposed at at least one side surface of the piezoelectric ceramic layers, while the dummy electrode is exposed at the other side surface of the piezoelectric ceramic layers. The external electrodes extend to the side surfaces other than the side surface at which the internal electrode is exposed.
    • 包括沉积以限定沉积产物的多个压电层的压电电声换能器通过在相同的厚度方向上使整个压电陶瓷层偏振并且还通过在布置在前/后的外部电极之间施加交替信号来弯曲地振动沉积的产物, 沉积产物的后主表面和设置在陶瓷层之间的内部电极。 在内部电极外侧的陶瓷层之间经由间隙设置有虚设电极,内部电极的一部分在压电陶瓷层的至少一个侧面露出,而虚设电极在另一侧表面露出 压电陶瓷层。 外部电极延伸到除内部电极暴露的侧表面以外的侧表面。