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    • 8. 发明授权
    • Method of manufacturing a laminated piezoelectric actuator
    • 层叠压电致动器的制造方法
    • US5607535A
    • 1997-03-04
    • US201987
    • 1994-02-25
    • Mineharu TsukadaKoji Omote
    • Mineharu TsukadaKoji Omote
    • H01L41/083H01L41/22H02N2/00H04R17/00H04R17/08B32B31/18
    • H01L41/273H01L41/083H01L41/338H04R17/08Y10T156/1052Y10T156/1056Y10T29/42
    • A method of manufacturing a laminated piezoelectric actuator including at least an actuator element which has a plurality of piezoelectric ceramics layers and internal electrode layers laminated alternately and external electrodes which connect alternate internal electrode layers in two groups. The method places a conductor layer on a piezoelectric ceramic green sheet for use as internal electrodes; bores a plurality of slits through the conductor layer-placed green sheet such that the slits are arranged in a line along the X axis of an orthogonal X-Y coordinates given arbitrarily in a plane of the green sheet with the lengthwise side perpendicular to the X axis, at an interval of a predetermined length and the slits in adjacent two lines are staggered by half the predetermined length; bores at least two positioning holes in the conductor layer-placed green sheet, symmetrically with respect to an intersection of a straight line crossing a center of a particular slit along the Y axis and another straight line passing a middle of adjacent two particular lines along the X axis; superposes a plurality of the positioning hole-bored green sheets with alternate green sheets rotated 180 degrees in the plane, based on the positioning holes; produces a parent actuator having the piezoelectric ceramics layers and internal electrode layers laminated alternately, from the thus-superposed green sheets; cuts the ceramics perpendicularly to produce the actuator element
    • 一种压电致动器的制造方法,其至少包括具有多个压电陶瓷层和交替层压的内部电极层的驱动元件和将两个交替的内部电极层连接的外部电极。 该方法将导体层放置在用作内部电极的压电陶瓷生片上; 通过导体层放置的生片将多个狭缝孔径,使得狭缝沿着X轴垂直于生长片的平面中任意给定的正交XY坐标沿X轴排列,纵向方向垂直于X轴, 以预定长度的间隔,并且相邻两条线中的狭缝交错预定长度的一半; 在导体层放置的生片中至少设有两个定位孔,相对于沿着Y轴与特定狭缝的中心交叉的直线的交点相对称,并且沿着沿着Y轴的相邻两条特定线的中间的另一条直线对称 X轴; 基于定位孔将多个定位孔钻生坯叠置在平面中旋转180度的替代生片; 从这样重叠的生片中产生具有压电陶瓷层和内部电极层交替堆叠的母致动器; 垂直切割陶瓷以产生致动器元件