Disclosed is an ultrasonic transducer and a manufacturing method thereof. The transducer comprises a piezoelectric composite array having an array of rigid posts made of a piezoelectric material, with kerf spaces between the posts filled with a low density aerogel material.

A multilayer piezoelectric element includes a piezoelectric element body, a first internal electrode and a second internal electrode, a plurality of first connecting conductors, a plurality of second connecting conductors, and an external member. The piezoelectric element body is formed by laminating a plurality of piezoelectric element body layer. The piezoelectric element body includes a first main surface and a second main surface, and a side surface. The plurality of first connecting conductors are connected to the first internal electrode. The plurality of second connecting conductors are connected to the second internal electrode. The external member is conductive and is bonded to the first main surface in such a way as to cover the first end portions of the plurality of first connecting conductors. The external member is electrically connected to the plurality of first connecting conductors.

An actuating-type gas guiding device includes a main body and a piezoelectric actuator. The piezoelectric actuator is disposed in the main body. The piezoelectric actuator includes a suspension plate, an outer frame, at least one bracket and a piezoelectric element. The suspension plate has a first surface and a second surface. The suspension plate is permitted to undergo a bending vibration. The outer frame is arranged around the suspension plate. The at least one bracket is connected between the suspension plate and the outer frame for elastically supporting the suspension plate. The piezoelectric element is attached on the first surface of the suspension plate. In response to a voltage applied to the piezoelectric element, the suspension plate is driven to undergo the bending vibration in a reciprocating manner. Consequently, gas is guided to flow in the main body along a non-scattered linear direction.

A multilayer piezoelectric element includes a ceramic body formed by a piezoelectric ceramic, and having first and second end face facing a longitudinal direction, first and second principal faces facing a thickness direction perpendicular to the longitudinal direction. A pair of external electrodes cover the first and second end faces, extend from the first and second end faces onto the first principal face via ridge parts connecting the end faces with the principal faces, and project in the thickness direction on the first principal face. Multiple internal electrodes are stacked inside the ceramic body and are connected alternately to the pair of external electrodes along the thickness direction. A surface electrode is provided on at least one of the first and second principal faces, and connected to the external electrode different from the one to which the internal electrode adjacent in the thickness direction is connected.

There is disclosed a piezoelectric thin film element comprising a first electrode, a second electrode and one or more piezoelectric thin films there between characterised in that the thin film element has at least two of: an electrode arrangement in which electrodes are arranged with the one or more piezoelectric thin films so that an electric field applied to a piezoelectric thin film or a portion of a piezoelectric thin film adjacent to the first electrode is lower than an electric field applied to a piezoelectric thin film or a portion of a piezoelectric thin film further from the first electrode when the piezoelectric thin film element actuated; a piezoelectric thin film adjacent to the first electrode in which a layer of the piezoelectric thin film near to the first electrode has a piezoelectric displacement constant which is lower than that of a layer of the piezoelectric thin film further from the first electrode; and a piezoelectric thin film adjacent to the first electrode in which a layer of the piezoelectric thin film near to the first electrode has an elastic modulus which is lower than that of a layer of the piezoelectric thin film further from the first electrode.

A method for producing an electric component (19) is specified, wherein in a step A) a body (1) having at least one cavity (7, 8) is provided. In a step B), the cavity (7, 8) is at least partly filled with a liquid insulation material (13) by means of capillary forces. Furthermore, an electric component (19) is specified wherein a cavity (7, 8) is at least partly filled with an insulation material (13). The insulation material (13) is introduced into the cavity (7, 8) by means of capillary forces. Furthermore, an electric component (19) is specified wherein a cavity (7, 8) is at least partly filled with an organic insulation material (13) and wherein the cavity is at least partly covered by a fired external contacting (17, 18).

Various embodiments of the present disclosure are directed towards an integrated chip including a first conductive structure and a second conductive structure. A dielectric structure is arranged between the first conductive structure and the second conductive structure. The dielectric structure comprises an upper region over a lower region. The lower region comprises a first lateral surface and a second lateral surface on opposing sides of the upper region. A passivation layer overlies the second conductive structure and the dielectric structure. The passivation layer comprises a lateral segment contacting the first lateral surface. A height of the lateral segment is greater than a height of the upper region. A top surface of the lateral segment is below a top surface of the passivation layer.

Embodiments of the present disclosure provide a piezoelectric transducer. The piezoelectric transducer may include a piezoelectric layer and an electrode. The electrode may cover at least one surface of the piezoelectric layer, and the electrode or the piezoelectric layer may include a plurality of concave structures recessed in a thickness direction of the electrode or the piezoelectric layer.

According to one embodiment, a piezoelectric element includes a piezoelectric body having a first main surface and a second main surface located on a side opposite to the first main surface, a first electrode provided on the first main surface, and a second electrode provided on the second main surface. The first electrode includes a first peripheral edge and a first slit extending from the first peripheral edge. An end portion of the first slit is separated from the first peripheral edge.

A piezoelectric element, in which a piezoelectric material layer has a plurality of crystal particles and a plurality of void portions and, in at least one of two or more of the piezoelectric material layers, when the average thickness in the lamination direction of the piezoelectric material layer is defined as T.sub.P, the average circle-equivalent diameter of the plurality of crystal particles is defined as D.sub.G, the maximum length in the lamination direction of the plurality of void portions not contacting the electrode layers is defined as L.sub.V, and the average thickness of the electrode layers contacting the at least one piezoelectric material layer is defined as T.sub.E, 0.07T.sub.PD.sub.G0.33T.sub.P and T.sub.EL.sub.V0.3T.sub.P are established and the lead content is less than 1000 ppm.