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发明授权
CN1750380B 压电致动器和微机电器件 失效 - 权利终止

压电致动器和微机电器件
摘要：
一种压电致动器，包括第一横梁，第一横梁包括第一底电极，在第一底电极上的第一压电膜，以及在第一压电膜上的第一顶电极，设置在第一横梁的一端并固定在衬底上的固定端，设置在第一横梁的另一端并悬浮在自由空间上的连接端；以及第二横梁，第二横梁包括在连接端连接到第一压电膜的第二压电膜，在第二压电膜下面的第二底电极，以及在第二压电膜上的第二顶电极，设置在第二横梁的一端并悬浮在自由空间上的工作端，该端与设置了连接端的另一端相对；其中固定端与工作端的中心之间的距离比工作端到连接端之间的距离短。
摘要（英）：

A piezoelectric actuator includes a first beam including a first bottom electrode, a first piezoelectric film on the first bottom electrode, and a first top electrode on the first piezoelectric film, a fixed end assigned at an end of the first beam and fixed on a substrate, a connecting end assigned at another end of the first beam and suspended over a free space; and a second beam including a second piezoelectric film connected to the first piezoelectric film at the connecting end, a second bottom electrode under the second piezoelectric film, and a second top electrode on the second piezoelectric film, a working end assigned at an end of the second beam opposite to another end to which the connecting end is assigned and suspended over the free space; wherein a distance between centers of the fixed end and the working end is shorter than a distance from the working end to the connecting end.

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