Device and method for producing active haptic feedback

• Main Authors: Rajapurkar, Aditya, Pentscher-Stani, Andreas, Puchleitner, Roman, Neuwirth, Daniel
• Format: Patent
• Language: English
• Published: 26.12.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FOR PERFORMING MECHANICAL WORK IN GENERAL; GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL; GENERATION; METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY; PERFORMING OPERATIONS; PHYSICS; PULSE TECHNIQUE; TRANSPORTING

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.