发明名称 |
ULTRASONIC TRANSDUCER AND MANUFACTURING METHOD THEREOF |
摘要 |
A technology capable of improving receiver sensitivity and improving insulation withstand voltage in an ultrasonic transducer is provided. An ultrasonic transducer comprises: a lower electrode; an insulator covering the lower electrode; a cavity portion disposed on the insulator so as to overlap with the lower electrode; and an upper electrode disposed so as to overlap with the cavity portion. In this ultrasonic transducer, an insulator is inserted between the upper and lower electrodes in a part not having the cavity portion. By this means, sum total of thickness of insulators between the upper and lower electrodes in a part not having the cavity portion is larger than sum total of thickness of insulators between the upper and lower electrodes in a part having the cavity portion.
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申请公布号 |
US2008259733(A1) |
申请公布日期 |
2008.10.23 |
申请号 |
US20070867681 |
申请日期 |
2007.10.04 |
申请人 |
MACHIDA SHUNTARO;ENOMOTO HIROYUKI |
发明人 |
MACHIDA SHUNTARO;ENOMOTO HIROYUKI |
分类号 |
B06B1/02 |
主分类号 |
B06B1/02 |
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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