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1. 发明授权

US08536761B2 Piezoelectric resonator having mesa type piezoelectric vibrating element 有权
标题翻译：具有台面型压电振动元件的压电谐振器
公开(公告)号：US08536761B2
公开(公告)日：2013-09-17
申请号：US12909254
申请日：2010-10-21
申请人： Go Yamashita , Kenji Komine , Shiro Murakami
发明人： Go Yamashita , Kenji Komine , Shiro Murakami
IPC分类号： H01L41/08
CPC分类号： H01L41/08 , H03H9/1021 , H03H9/19
摘要： A piezoelectric resonator includes: a piezoelectric plate having a vibrating portion surrounded by a peripheral portion; and an excitation electrode on the piezoelectric plate, wherein long sides of the vibrating portion and excitation electrode are parallel to a piezoelectric plate long side. Assuming a piezoelectric plate long side length X, a vibrating portion thickness t, a vibrating portion long side length Mx, an excitation electrode long side length Ex, and a piezoelectric plate flexure vibration wavelength λ, λ/2=(1.332/f)−0.0024 (piezoelectric resonator resonance frequency f), (Mx−Ex)/2=λ/2, Mx/2={(A/2)+(1/4)}λ (where, A is a positive integer), and X≧20t. A protruding portion is disposed on a vibrating portion extension line and parallel to a vibrating portion short side. Assuming a protruding portion length Dx, Dx=(λ/2)×m (where, m is a positive integer). Assuming a distance Sx between the vibrating and protruding portions, Sx=(λ/2)×n±0.1λ (where, n is a positive integer).
摘要翻译：压电谐振器包括：压电板，其具有由周边部分包围的振动部分; 以及压电板上的激励电极，其中振动部分和激励电极的长边平行于压电板长边。假设压电板长边长度X，振动部分厚度t，振动部分长边长度Mx，激励电极长边长度Ex和压电板挠曲振动波长λ，λ/ 2 =（1.332 / f） - 0.0024（压电谐振器谐振频率f），（Mx-Ex）/ 2 =λ/ 2，Mx / 2 = {（A / 2）+（1/4）} lambda（其中，A为正整数） X> = 20t。突出部设置在振动部延伸线上并且平行于振动部分短边。假设突出部分长度Dx，Dx =（λ/ 2）×m（其中，m为正整数）。假设振动和突出部分之间的距离Sx为Sx =（λ/ 2）×n±0.1λ（其中，n为正整数）。

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