Patent ID: 9117997
Filing Date: 2015-08-25
Classification: H01L

Abstract:
1. A multilayer piezoceramic actuator comprising: an actuator body with a plurality of piezoceramic layers which are separated from each other by means of a positive or negative internal electrode in alternation; and positive and negative collecting electrodes which are arranged on two outer faces of the actuator body and are conductively connected to the associated positive or negative internal electrodes, wherein the actuator body of the multilayer actuator has at least one positive and one negative contacting electrode, by means of each of which the multilayer actuator is electrically contacted and each of which is conductively connected to the associated positive or negative collecting electrode, and the contacting electrodes are arranged in areas of the actuator body that are provided with a base metallization, the base metallization is continuously provided in a stack of the piezoceramic layers that are in the areas of the actuator body, and the piezoceramic layers are separated by at least one positive and negative contacting electrode, wherein the areas of the actuator body that are provided with a base metallization are spaced apart from each other by distances and from the internal electrodes by distances, and wherein the distances are not less than the thickness of the piezoceramic layers in the active area of the multilayer actuator.