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    Device and method for producing active haptic feedback
    2.
    发明授权
    Device and method for producing active haptic feedback 有权

    公开(公告)号：US11850630B2

    公开(公告)日：2023-12-26

    申请号：US16967068

    申请日：2019-02-05

    Applicant: TDK Electronics AG

    Inventor： Daniel Neuwirth ,  Roman Puchleitner ,  Aditya Rajapurkar ,  Andreas Pentscher-Stani

    IPC: B06B1/06 ,  G06F3/01 ,  H02N2/04 ,  H03K17/96 ,  H10N30/50 ,  H10N30/20

    CPC classification number: B06B1/0644 ,  G06F3/016 ,  H02N2/043 ,  H03K17/964 ,  H03K17/9625 ,  H10N30/202 ,  H10N30/50 ,  H03K2217/96062

    Abstract: 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.

    Driver circuit for analyzing and controlling a piezoelectric component, button providing haptic feedback, and operating method
    5.
    发明授权
    Driver circuit for analyzing and controlling a piezoelectric component, button providing haptic feedback, and operating method 有权

    公开(公告)号：US11223356B2

    公开(公告)日：2022-01-11

    申请号：US16493526

    申请日：2018-03-16

    Applicant: TDK Electronics AG

    Inventor： Roman Puchleitner ,  Harald Kastl ,  Aditya Rajapurkar ,  Daniel Neuwirth

    IPC: H03K17/96 ,  G06F3/01 ,  H01L41/04 ,  H02M3/335 ,  H03F3/217

    Abstract: 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.

    Device and Method for Producing Active Haptic Feedback
    6.
    发明申请
    Device and Method for Producing Active Haptic Feedback 有权

    公开(公告)号：US20210031235A1

    公开(公告)日：2021-02-04

    申请号：US16967068

    申请日：2019-02-05

    Applicant: TDK Electronics AG

    Inventor： Daniel Neuwirth ,  Roman Puchleitner ,  Aditya Rajapurkar ,  Andreas Pentscher-Stani

    IPC: B06B1/06 ,  G06F3/01 ,  H02N2/04 ,  H03K17/96 ,  H01L41/083 ,  H01L41/09

    Abstract: 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.

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