Tdk Electronics Ag

Epcos Ag

Robert Boschgmbh

Aditya Rajapurkar

Daniel Neuwirth

Roman Puchleitner

Martin Galler

Harald Kastl

Dieter Somitsch

Andreas Pentscher-Stani

Maximillian Prall

Wolfgang Wallnöfer

Gert Turel

Zdravko Mijocevic

A device and a method for producing haptic feedback are disclosed. In an embodiment a device includes at least one piezoelectric actuator having a plurality of piezoelectric layers and internal electrodes arranged therebetween, a first amplification element and a second amplification element, wherein the piezoelectric actuator is arranged between the amplification elements, wherein the piezoelectric actuator is configured to change its extension in a first direction upon application of an electrical voltage, and wherein the amplification elements are configured to deform as a result of the change in the extension of the piezoelectric actuator such that a subregion of a respective amplification element is moved relative to the piezoelectric actuator in a second direction, which is perpendicular to the first direction and a driver circuit configured to apply the electrical voltage to the piezoelectric actuator such that the amplification elements are deformed thereby producing the haptic feedback against an object pressing on the device, the haptic feedback imitating a jump in force.

Device and method for producing active haptic feedback

A device including a piezoelectric actuator that can detect the actuation force and provide haptic feedback. The longitudinal extension of the actuator, generated for this purpose, can be reinforced in the desired direction by a deformable metal sheet. The deformable metal sheet is adhered on and has a borehole for pressure equalization.

Device that conveys haptic feedback, and component comprising the device

A driver circuit is disclosed. In an embodiment a drive circuit includes a signal port with a first terminal and a second terminal, a first node and a second node, a comparator with an inverting input, a non-inverting input and an output and an operational amplifier with an inverting input, a non-inverting input and an output, wherein the first terminal is electrically conductively connected with the inverting input of the operational amplifier, wherein the second terminal is electrically conductively connected with the non-inverting input of the comparator, wherein the inverting input of the comparator is electrically conductively connected with the output of the operational amplifier, wherein the first node is electrically conductively connected with the output of the operational amplifier, wherein the inverting input of the comparator is electrically conductively connected with the inverting input of the operational amplifier, and wherein the second node is electrically conductively connected with the non-inverting input of the operational amplifier.

Driver circuit for analyzing and controlling a piezoelectric component, button providing haptic feedback, and operating method

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

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Graz, Austria

Aditya Rajapurkar