发明名称 |
PIEZOELECTRIC ELEMENT, ULTRASONIC PROBE, ULTRASONIC MEASUREMENT DEVICE, AND MANUFACTURING METHOD OF PIEZOELECTRIC ELEMENT |
摘要 |
A piezoelectric element includes: a piezoelectric body; and a vibrating plate including single crystal silicon having anisotropy having orientation with a relatively high Poisson's ratio and orientation with a relatively low Poisson's ratio (hereinafter, referred to as “low Poisson's ratio orientation”) as a vibrating material, in which the piezoelectric body and the vibrating plate are laminated on each other so that the low Poisson's ratio orientation is in a direction along a high expansion and contraction direction among a direction where a degree of expansion and contraction caused according to a support structure of the piezoelectric body is relatively high (hereinafter, referred to as “high expansion and contraction direction”) and a direction where a degree thereof is relatively low. |
申请公布号 |
US2017119350(A1) |
申请公布日期 |
2017.05.04 |
申请号 |
US201615340920 |
申请日期 |
2016.11.01 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
YAMASAKI Sayaka;TAMURA Hiroaki |
分类号 |
A61B8/00;H01L41/08;H01L41/083;B06B1/06;H01L41/312;H01L41/29;H01L41/187;H01L41/04;H01L41/257 |
主分类号 |
A61B8/00 |
代理机构 |
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代理人 |
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主权项 |
1. A piezoelectric element comprising:
a piezoelectric body; and a vibrating plate including single crystal silicon having anisotropy having orientation with a relatively high Poisson's ratio and orientation with a relatively low Poisson's ratio (hereinafter, referred to as “low Poisson's ratio orientation”) as a vibrating material, wherein the piezoelectric body and the vibrating plate are laminated on each other so that the low Poisson's ratio orientation is in a direction along a high expansion and contraction direction among a direction where a degree of expansion and contraction caused according to a support structure of the piezoelectric body is relatively high (hereinafter, referred to as “high expansion and contraction direction”) and a direction where a degree thereof is relatively low. |
地址 |
Tokyo JP |