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1. 发明申请

WO2009016606A2 CMUTS WITH A HIGH-K DIELECTRIC 审中-公开
标题翻译：具有高K电介质的CMUTS
公开(公告)号：WO2009016606A2
公开(公告)日：2009-02-05
申请号：PCT/IB2008/053082
申请日：2008-07-31
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ROEST, Aarnoud Laurens , REIMANN, Klaus , KLEE, Marieke , VAN BEEK, Jozef Thomas Martinus , FRASER, John Douglas
发明人： ROEST, Aarnoud Laurens , REIMANN, Klaus , KLEE, Marieke , VAN BEEK, Jozef Thomas Martinus , FRASER, John Douglas
IPC分类号： B06B1/16
CPC分类号： B06B1/0292
摘要： A capacitive ultrasound transducer includes a first electrode, a second electrode, and a third electrode, the third electrode including a central region disposed in collapsibly spaced relation with the first electrode, and a peripheral region disposed outward of the central region and disposed in collapsibly spaced relation with the second electrode. The transducer further includes a layer of a high dielectric constant material disposed between the third electrode and the first electrode, and between the third electrode and the second electrode. The transducer may be operable in a collapsed mode wherein the peripheral region of the third electrode oscillates relative to the second electrode, and the central region of the third electrode is fully collapsed with respect to the first electrode such that the dielectric layer is sandwiched therebetween. Piezoelectric actuation, such as d31 and d33 mode piezoelectric actuation, may further be included. A medical imaging system includes an array of such capacitive ultrasound transducers disposed on a common substrate.
摘要翻译：电容式超声波换能器包括第一电极，第二电极和第三电极，所述第三电极包括与所述第一电极以可折叠间隔开的关系设置的中心区域，以及设置在所述中心区域外侧的周边区域，与第二电极的关系。换能器还包括设置在第三电极和第一电极之间以及第三电极和第二电极之间的高介电常数材料层。换能器可以以折叠模式操作，其中第三电极的周边区域相对于第二电极振荡，并且第三电极的中心区域相对于第一电极完全折叠，使得介电层夹在其间。可以进一步包括诸如d31和d33模式压电致动的压电致动。医疗成像系统包括设置在公共基底上的这种电容式超声换能器阵列。

2. 发明公开

EP2170531A2 CMUTS WITH A HIGH-K DIELECTRIC 审中-公开
标题翻译： CMUTS MIT EINEM HOCH-K-DIELEKTRIKUM
公开(公告)号：EP2170531A2
公开(公告)日：2010-04-07
申请号：EP08789513.2
申请日：2008-07-31
申请人： Koninklijke Philips Electronics N.V.
发明人： ROEST, Aarnoud Laurens , REIMANN, Klaus , KLEE, Marieke , VAN BEEK, Jozef Thomas Martinus , FRASER, John Douglas
IPC分类号： B06B1/02
CPC分类号： B06B1/0292
摘要： A capacitive ultrasound transducer includes a first electrode, a second electrode, and a third electrode, the third electrode including a central region disposed in collapsibly spaced relation with the first electrode, and a peripheral region disposed outward of the central region and disposed in collapsibly spaced relation with the second electrode. The transducer further includes a layer of a high dielectric constant material disposed between the third electrode and the first electrode, and between the third electrode and the second electrode. The transducer may be operable in a collapsed mode wherein the peripheral region of the third electrode oscillates relative to the second electrode, and the central region of the third electrode is fully collapsed with respect to the first electrode such that the dielectric layer is sandwiched therebetween. Piezoelectric actuation, such as d31 and d33 mode piezoelectric actuation, may further be included. A medical imaging system includes an array of such capacitive ultrasound transducers disposed on a common substrate.
摘要翻译：电容式超声换能器包括第一电极，第二电极和第三电极，所述第三电极包括与所述第一电极以可折叠间隔开的关系设置的中心区域，以及设置在所述中心区域外侧的周边区域，与第二电极的关系。换能器还包括设置在第三电极和第一电极之间以及在第三电极和第二电极之间的高介电常数材料层。换能器可以以折叠模式操作，其中第三电极的周边区域相对于第二电极振荡，并且第三电极的中心区域相对于第一电极完全折叠，使得介电层夹在其间。可以进一步包括诸如d31和d33模式压电致动的压电致动。医疗成像系统包括设置在公共基底上的这种电容式超声换能器阵列。

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