PIEZOELECTRIC ACTUATOR AND METHOD FOR PRODUCING A
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专利名称：PIEZOELECTRIC ACTUATOR AND METHOD FOR PRODUCING A PIEZOELECTRIC
ACTUATOR
发明人：HEINZE, THOMAS,LENK, ANDREAS
申请号：EP07726665.8
申请日：20070307
公开号：EP1997160A1
公开日：
20081203
专利内容由知识产权出版社提供
摘要：The invention relates to a piezoelectric actuator and to a method for producing a piezoelectric actuator (20, 70) having a piezo stack (1'', 1''') and two outer electrodes (11, 12, 11', 12') which are arranged on the outside (5) of the piezo stack (1'', 1'''). A fully active piezo stack (1) comprising a plurality of alternately successive piezoelectric layers (2) and continuous inner electrode layers (3, 4) is first of all provided. The outside (5) of the fully active piezo stack (1) is provided with trenches (7, 8) in regions in which the inner electrode layers (3, 4) are intended to be electrically insulated from the outer electrodes (11, 12, 11', 12'), with the result that the trenches (7, 8) shorten the inner electrode layers (3, 4) in these regions from the outside (5) of the piezo stack (1) inwards. The trenches (7, 8) are then filled with an electrically insulating material (9) and the two outer electrodes (11, 12, 11', 12') are applied to the outside (5) of the piezo stack (1'', 1'''), with the result that the two outer electrodes (11, 12, 11', 12') are alternately electrically connected to the inner electrode layers (3, 4).
申请人：CONTINENTAL AUTOMOTIVE GMBH
地址：Wittelsbacherplatz 2 80333 München DE
国籍：DE
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