Epcos Ag

Tdk Electronics Ag

Robert Boschgmbh

Martin Galler

Reinhard Gabl

Franz Rinner

Marion Ottlinger

Georg Kuegerl

Harald Kastl

Dieter Somitsch

Christoph Auer

Markus Puff

Alexander Glazunov

Robert Krumphals

Jan-Thorsten Reszat

Sebastian Brunner

Axel Pecina

Georg Kügerl

Siegfried Fellner

Roman Puchleitner

Aditya Rajapurkar

Wolfgang Athenstaedt

Manfred Reinisch

Ivan Jagust

Peter Gerletz

Zeljko Maric

Peter Windisch

Andreas Stani

Zdravko Mijocevic

Johann Ramler

Markus Weiglhofer

A device having a piezoelectric actuator, which can both detect the actuation force and provide a haptic feedback. The linear expansion of the actuator can be amplified in the desired direction by a deformable metal sheet. The actuator has a flat piezoelectric basic body having plane-parallel main surfaces and two electrodes. The body is designed to generate an active haptic feedback when a force exerted upon the basic body is detected. The haptic feedback is generated in that an actuator voltage, which, by piezoelectric actuator action, results in a change in the length of the basic body, is applied between the electrodes. A cymbal-shaped metal sheet is fastened to the basic body. The body is fixed with the truncated cone vertices between a base and an actuation means connected to the base and fixed by means of a bias, which is set as tensile or compressive stress.

Device providing haptic feedback, and component comprising said device

A multilayer component is disclosed. In an embodiment, a multilayer component includes a main body having a plurality of alternately arranged ceramic layers and inner electrodes and at least two outer electrodes for electrically contacting the inner electrodes, wherein the at least two outer electrodes have a different polarity, and wherein the outer electrodes have a different geometric shape and/or a different size and/or a different arrangement at an outer surface of the main body for identifying the different polarity.

Multilayer component and use of outer electrodes

A sensor and a method for measuring a pressure are disclosed. In an embodiment the sensor includes a main body including a piezoelectric material and at least two internal electrodes arranged in the piezoelectric material, wherein the at least two internal electrodes are arranged in such a way that a voltage arises between the at least two internal electrodes when a pressure acts on a side surface of the main body that is provided for an application of pressure.

Sensor and method for measuring a pressure

Methods for producing ceramic multi-layer components and multi-layer components made by such methods. A method includes the following steps: providing green layers for the ceramic multi-layer components, stacking the green layers into a stack and subsequently pressing the stack into a block, singulating the block into partial blocks each having a longitudinal direction, thermally treating the partial blocks and subsequently machining surfaces of the partial blocks. Recesses are produced on the surfaces of the partial blocks during the machining, and the partial blocks are singulated.

Method for producing ceramic multi-layer components

A pressure sensor and a method for measuring a pressure, the pressure sensor including a main body having a piezoelectric material and at least two internal electrodes arranged in the piezoelectric material, where the at least two internal electrodes are arranged such that a voltage arises between the at least two internal electrodes when a pressure acts on a side surface of the main body.

Pressure sensor and method for measuring a pressure

A multi-layer component having a main body including a stack of alternately arranged dielectric layers and internal electrode layers. In an insulation region on the outer sides of the main body a length of a connecting line between adjacent internal electrode layers of unlike polarity is greater than a direct distance between the adjacent electrode layers. A method for producing a multi-layer component is also provided. The method includes providing a main body including a stack of alternately arranged dielectric layers and internal electrode layers. The method also includes extending the connecting line between adjacent internal electrode layers of unlike polarity on the outer sides of the main body.

Multi-layer component and method for producing a multi-layer component

A multi-layer component () is specified, comprising a main body () with an external contact () arranged thereon, a further contact () for electrically contacting the multi-layer component (), and a connecting element () for connecting the external contact () and the further contact (), wherein the connecting element () is embodied in such a way that a decoupling of mechanical stresses that occur in the further contact () from the external contact () is brought about.

Multi-layer component having an external contact

A method for producing an electric contact-connection of a multilayer component is disclosed. In an embodiment, the method includes providing a main body of the multilayer component having internal electrode layers, applying an electrically conductive material and applying a photosensitive material on the electrically conductive material. The method further includes structuring the electrically conductive material via the photosensitive material such that the internal electrode layers alternatingly are covered and uncovered by the electrically conductive material and applying an insulating material after structuring the electrically conductive material such that the internal electrode layers are alternatingly covered by the electrically conductive material and by the insulating material.

Method for producing an electric contact connection of a multilayer component

A multilayer component includes a main body and an external contact. The external contact has a connection element and a contact layer. The contact layer electrically conductively connects the main body to the connection element. A connection between the main body and the connection element is produced by sintering of the contact layer.

Multilayer component comprising an external contact and method for producing a multilayer component comprising an external contact

A piezoelectric actuator of a multilayer design includes outer electrodes that are fastened by means of a bonding layer applied by thermal spraying. For example, the outer electrodes are formed as a woven wire fabric. Furthermore, a method for fastening an outer electrode in a piezoelectric actuator is specified.

Method of forming a piezoelectric actuator

The invention relates to a method for filling at least one cavity () of a multi-layer component () with filling material (). In a first step, the method comprises providing a main body () of the multi-layer component (), the main body () having at least one cavity (). In a subsequent step, the method comprises placing the main body () in a chamber () and then generating a first pressure, the first pressure being a negative pressure. Then, a filling material () is arranged on the main body (). Furthermore, the invention relates to a multi-layer component (). The multi-layer component () has a main body () with at least one cavity (), wherein the cavity () is filled with a filling material () which has a viscosity of between 200 mPas and 2000 mPas.

Method for filling at least one cavity of a multi-layer component with a filling material, and multi-layer component

The piezoelectric multilayer component includes a piezo stack having an alternating sequence of piezoelectric ceramic layers and inner electrodes, and a passivation on an outer side. The passivation is produced from a piezoelectric ceramic material which is different from the material of the ceramic layers. In the production method, the passivation is polarized together with the ceramic layers.

Piezoelectric multilayer component and method for producing the same

A piezoelectric component includes at least one planned fracture layer for generating and guiding cracks in the component in a controlled manner. The planned fracture layer is disposed between two electrode layers adjacent to each other in the direction of the stack. The distance dof the two electrode layers is greater than the distance dl of two adjacent electrode layers between which no planned fracture layer is provided.

Piezoelectric component

Piezoelectric actuator of a multilayer design and method for fastening an outer electrode in a piezoelectric actuator

A solder material can be used for fastening an outer electrode on a piezoelectric component. The solder material contains tin as the main constituent and at least one addition from the group of cobalt, tungsten, osmium, titanium, vanadium, iron and rare earth metals. A piezoelectric component includes such a solder material. The solder material is applied by means of a base metallization.

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Kalsdorf, Austria

Martin Galler