发明名称 |
ULTRASONIC ELEMENT, AND ULTRASONIC ENDOSCOPE |
摘要 |
A US element 20 includes a silicon substrate 11, wherein a lower electrode layer 12 that has a plurality of lower electrode sections 12A, and a plurality of lower wiring sections 12B, and is connected to a lower electrode terminal 52 to which a drive signal and a bias signal are applied, a lower insulating layer 13, an upper insulating layer 15 in which a plurality of cavities 14 are formed, an upper electrode layer 16 that has a plurality of upper electrode sections 16A and a plurality of upper wiring sections 16B, and is connected to an upper electrode terminal 51 at a ground potential for detecting a capacitance signal, and a protection layer 17 are sequentially stacked on the silicon substrate 11, and the US element 20 further includes a shield electrode section 71 that is formed at least at an upper side of the lower wiring sections 12B, and is connected to a shield electrode terminal 53 at a ground potential. |
申请公布号 |
EP2733960(A1) |
申请公布日期 |
2014.05.21 |
申请号 |
EP20120811284 |
申请日期 |
2012.05.29 |
申请人 |
OLYMPUS MEDICAL SYSTEMS CORP.;OLYMPUS CORPORATION |
发明人 |
MATSUMOTO, KAZUYA;KARAKI, KAZUHISA;HASEGAWA, MAMORU;WAKABAYASHI, KATSUHIRO |
分类号 |
H04R19/00;A61B8/12;B06B1/02;F04B43/04 |
主分类号 |
H04R19/00 |
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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