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Multi-level haptic feedback transducer, and multi-level haptic feedback transducer for haptic feedback interface

A haptic feedback, transducer technology, applied in instrumentation, mechanical mode conversion, piezoelectric/electrostrictive/magnetostrictive devices, etc., can solve problems such as limited deployment, lack of large strain-responsive haptic feedback for actuators, etc.

Pending Publication Date: 2021-10-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lack of physically large strain responses and realistic tactile feedback in these actuators limits the further deployment of such actuators in handheld touch-sensitive interfaces.

Method used

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  • Multi-level haptic feedback transducer, and multi-level haptic feedback transducer for haptic feedback interface
  • Multi-level haptic feedback transducer, and multi-level haptic feedback transducer for haptic feedback interface
  • Multi-level haptic feedback transducer, and multi-level haptic feedback transducer for haptic feedback interface

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Embodiment Construction

[0025] The following detailed description refers to the accompanying drawings, which show, by way of illustration, specific details and embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure. Other embodiments may be utilized and structural and logical changes may be made without departing from the scope of the present disclosure. Embodiments are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments.

[0026] A feature described in the context of one embodiment may correspondingly apply to the same or similar features in other embodiments. Even if not explicitly described in these other embodiments, features described in the context of one embodiment can be applied to other embodiments accordingly. Furthermore, additions and / or combinations and / or substitutions described for a certain fe...

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PUM

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Abstract

The invention relates to a multi-level haptic feedback transducer and a multi-level haptic feedback transducer for a haptic feedback interface. An aspect concerns a haptic feedback transducer including an electroactive material (EAM) membrane disposed on a substrate, wherein the EAM membrane includes an EAM layer configured to provide a mechanical response in response to an electrical driving signal. The haptic feedback transducer further includes an air pump configured to control a pressure of a gas which is applied to a side of the EAM membrane facing the substrate. Further, a haptic feedback interface is provided, including one, or two or more haptic feedback transducers, and wherein the substrate is common to each of the haptic feedback transducers. Further, a haptic feedback interface including an electrical driving circuit for driving the haptic feedback transducer is provided, wherein the electrical driving circuit is configured to: provide a first EAM electrical driving signal to the EAM layer, and / or to provide a first air pump electrical driving signal to the air pump.

Description

technical field [0001] The present disclosure relates to a multilevel haptic feedback transducer and a multilevel haptic feedback transducer for a haptic feedback interface. The invention also relates to a multi-level tactile feedback interface comprising an electric drive circuit. Background technique [0002] Haptic applications are growing for handheld touch-sensitive interfaces, such as consumer electronics, and for customizable dashboards and screens in automotive applications. Haptic feedback recreates the sense of touch in user interface devices by transferring mechanical force, pressure, or vibration to convey information to the user. In particular, haptic actuators are an essential component of haptic systems that provide mechanical actuation to convey tactile sensations to users. [0003] Today's haptic touch interfaces are primarily characterized by vibratory tactile feedback driven by inertial-type actuators such as Eccentric Rotating Masses (ERMs) and Linear R...

Claims

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Application Information

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IPC IPC(8): G06F3/01
CPCG06F3/017G06F3/016H10N30/2047H10N30/857
Inventor 全真汉苏永兴
Owner ROBERT BOSCH GMBH