公开(公告)号：US6133673A

公开(公告)日：2000-10-17

申请号：US431359

申请日：1999-11-01

申请人： Ryoichi Kawara ,  Nobuhiro Kitajima ,  Kenichi Sakai

发明人： Ryoichi Kawara ,  Nobuhiro Kitajima ,  Kenichi Sakai

IPC分类号： H03H9/02 ,  H03H9/10 ,  H03H9/17 ,  H03H9/19 ,  H01L41/08

CPC分类号： H03H9/177 ,  H03H9/0207 ,  H03H9/1035 ,  H03H9/132

摘要： An energy trap type piezoelectric resonator includes a plate-like piezoelectric resonator element constructed to vibrate in a third harmonic of a longitudinal vibration mode in a thickness direction thereof and such that both main surfaces of the resonator element are laminated with sealing substrates. Sealed spaces are provided so as to allow a vibrating portion of oppositely disposed vibrating electrodes to vibrate. Sealing portions, in which the piezoelectric resonator element and the sealing substrates are joined and connected around the sealed spaces, are constructed so that when the thickness of a piezoelectric substrate is represented by t and the shortest distance to the sealing portion from the vibrating electrodes is d, the sealed spaces satisfy the relationship 0

摘要翻译： 能量陷波型压电谐振器包括：板状压电谐振元件，其被构造成在纵向振动模式的厚度方向上以三次谐波振动，并且谐振元件的两个主表面与密封基板层叠。 设置密封空间以允许相对设置的振动电极的振动部分振动。 压电谐振元件和密封基板连接并围绕密封空间连接的密封部分被构造成使得当压电基片的厚度由t表示并且距离振动电极的密封部分的最短距离为 d，密封空间满足关系0

公开(公告)号：US6163101A

公开(公告)日：2000-12-19

申请号：US299492

申请日：1999-04-26

申请人： Ryuhei Yoshida ,  Nobuhiro Kitajima ,  Kenichi Sakai

发明人： Ryuhei Yoshida ,  Nobuhiro Kitajima ,  Kenichi Sakai

IPC分类号： H03H9/19 ,  H03H9/02 ,  H03H9/10 ,  H03H9/17

CPC分类号： H03H9/1035 ,  H03H9/0207 ,  H03H9/0211 ,  H03H9/177

摘要： A piezoelectric resonator includes two sealing substrates, a seal portion, and an energy-trap type piezoelectric resonance element which is adapted to vibrate in a third harmonic of thickness extensional vibration. The piezoelectric resonance element includes a piezoelectric substrate and a pair of excitation electrodes, which are disposed on opposite major surfaces of the piezoelectric substrate. A portion of the piezoelectric substrate sandwiched by the excitation electrodes defines a vibrating portion. The sealing substrates each have a cavity formed therein and are attached onto the corresponding major surfaces of the piezoelectric substrate such that the cavities define a space for vibration. The seal portion is formed around the vibration space so as to damp leaking vibration. The vibrating portion is arranged such that the approximate center thereof is spaced from the approximate center of the vibration space as viewed along the major surfaces of the piezoelectric resonance element.

摘要翻译： 压电谐振器包括两个密封基板，密封部分和适于以厚度延伸振动的三次谐波振动的能量陷阱型压电谐振元件。 压电谐振元件包括压电基片和一对激励电极，它们设置在压电基片的相对主表面上。 由激励电极夹持的压电基板的一部分限定振动部分。 密封基板各自具有形成在其中的空腔并且附着到压电基板的相应的主表面上，使得空腔限定用于振动的空间。 密封部分形成在振动空间周围以便阻止泄漏振动。 振动部分被布置成使得其大致中心与沿着压电谐振元件的主表面观察的振动空间的大致中心间隔开。