发明名称 |
Composite piezoelectric transducer and method of fabricating the same |
摘要 |
A composite piezoelectric transducer of the present invention includes a plurality of arranged piezoelectric elements, and dielectric portions positioned between the plurality of piezoelectric elements. In the composite piezoelectric transducer, an area of a cross-section perpendicular to an ultrasonic emitting direction in at least one piezoelectric element of the plurality of piezoelectric elements varies along the ultrasonic emitting direction.
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申请公布号 |
US6984922(B1) |
申请公布日期 |
2006.01.10 |
申请号 |
US20030620083 |
申请日期 |
2003.07.15 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NAGAHARA HIDETOMO;SUGINOUCHI TAKEHIKO;HASHIMOTO MASAHIKO;ASAI KATSUHIKO |
分类号 |
H01L41/09;B06B1/06;H01L41/18;H01L41/22;H01L41/37;H04R17/00 |
主分类号 |
H01L41/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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