公开(公告)号：US20240313669A1

公开(公告)日：2024-09-19

申请号：US18531102

申请日：2023-12-06

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ki-Uk KYUNG ,  Seung-Yeon JANG ,  Hyunwoo KIM ,  Minjae CHO ,  Minki KIM

IPC: H02N1/00 ,  G06F3/01 ,  H02N2/00

CPC classification number: H02N1/008 ,  G06F3/016 ,  H02N2/008

Abstract: A soft haptic device and a local control method are disclosed. The soft haptic device includes a soft actuator. The soft actuator includes an electroactive polymer film, a patterned electrode, and a dielectric liquid injected between the electroactive polymer film and the patterned electrode. The soft actuator generates a reconfigurable shape such that a form of an output shape and a number of outputtable shapes are changed depending on the number of electrodes constituting the patterned electrode, a shape of the electrodes, and an arrangement of the electrodes.

公开(公告)号：US11990896B2

公开(公告)日：2024-05-21

申请号：US17874357

申请日：2022-07-27

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Axel Thomsen ,  Eric J. King ,  Thomas H. Hoff ,  John L. Melanson ,  Angus Black ,  Ross C. Morgan ,  Malcolm Blyth

IPC: H03K17/687 ,  H02M3/158 ,  H02N2/00

CPC classification number: H03K17/6871 ,  H02M3/158 ,  H02N2/0075

Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers. A switching driver has first and second supply node for receiving supply voltages and includes an output bridge stage, a capacitor and a network of switches. The network of switches is operable in different switch states to provide different switching voltages to the output bridge stage. A controller is configured to control the switch state of the network of switches and a duty cycle of output switches of the output bridge stage based on an input signal to generate an output signal for driving the transducer.

公开(公告)号：US20240128896A1

公开(公告)日：2024-04-18

申请号：US18263890

申请日：2022-02-03

Applicant: SONY GROUP CORPORATION

Inventor： RYO IWAMURO ,  YUSAKU KATO ,  TAKAHITO SUZUKI ,  HIROYUKI MITSUHASHI ,  YOSHIO GOTO

IPC: H02N2/00 ,  C08K3/04

CPC classification number: H02N2/005 ,  C08K3/04 ,  C08K2003/023

Abstract: An actuator having good interlayer adhesion at a lamination interface, good conductivity of an electrode layer, and good smoothness of the electrode layer is provided. The actuator includes a plurality of elastomer layers and a plurality of electrode layers, and the elastomer layers and electrode layers are alternately laminated. The electrode layer contains carbon black, a content of the carbon black in the electrode layer is 10% by mass or more and 20% by mass or less, and a specific surface area of the carbon black is 380 g/m2 or more and 800 m2/g or less.

公开(公告)号：US20240120856A1

公开(公告)日：2024-04-11

申请号：US18315222

申请日：2023-05-10

Applicant: CAIRDAC

Inventor： Willy REGNIER ,  An NGUYEN-DINH

IPC: H02N2/18 ,  H02N2/00

CPC classification number: H02N2/186 ,  H02N2/181 ,  H02N2/22 ,  A61N1/3785

Abstract: The pendular unit comprises a piezoelectric transducer beam (22), and an inertial mass mounted at the free distal end of the beam (22). The inertial mass (26) is a monolithic part including a cavity in the form of an axial slit (64), with two opposite longitudinal surfaces (74) extending along a central axis of the inertial mass (26). The axial slit (64) opens out on the proximal side of the inertial mass (26), and receives the free distal end of the beam (22), secured between the two opposite longitudinal surfaces (74) of the axial slit (64).

公开(公告)号：US20240079972A1

公开(公告)日：2024-03-07

申请号：US18140046

申请日：2023-04-27

Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY

Inventor： Yung TING ,  Sheuan-Perng LIN ,  Suhail ABBAS ,  Chih-Hsuan YU

IPC: H02N2/00 ,  H10N30/20

CPC classification number: H02N2/0045 ,  H10N30/208

Abstract: The present invention relates to a shear deformation-type bimorphic piezoelectric actuator. The actuator includes at least a pair of shear deformation-type piezoelectric ceramic members which are polarized in the height direction thereof, coated with metal electrodes on both sides thereof and attached to opposite sides of a metal block to constitute a piezoelectric bimorph. The ceramic members are forced to undergo a face shear deformation or a resonance deformation upon receiving a driving voltage, whereby the metal block and the output head mounted thereon are driven to generate an elliptical motion, which in turn drives a rotor or a carriage to move. Taking advantage of the small dimension of the ceramic members and the enhanced displacement attributed to the piezoelectric bimorph structure, the piezoelectric actuator disclosed herein is suitable for manufacturing a miniature piezoelectric motor with high power output.

公开(公告)号：US20240039429A1

公开(公告)日：2024-02-01

申请号：US18140173

申请日：2023-04-27

Applicant: City University of Hong Kong Shenzhen Futian Research Institute

Inventor： Jian Lu ,  Fengqian Hao ,  Biao Wang ,  Zhengbao Yang

IPC: H02N2/18 ,  H02N2/00

CPC classification number: H02N2/186 ,  H02N2/0055 ,  H02J7/32

Abstract: A vibration energy harvester, a power accumulator and a power supplier, including: a multi-stable shell with one or more bistable regions and at least one piezoelectric element fixed on a surface of the multi-stable shell. Each of the bistable regions has two different stable configurations, and different combinations of the stable configurations of the one or more bistable regions make the multi-stable shell have a plurality of different stable configurations. The one or more bistable regions are switched between the two stable configurations thereof when being excited by vibration energy, so that the multi-stable shell is switched between the plurality of stable configurations to deform the piezoelectric element to generate electric energy.

公开(公告)号：US20240032432A1

公开(公告)日：2024-01-25

申请号：US18374579

申请日：2023-09-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoji OKAMOTO ,  Ryouichi TAKAYAMA ,  Takuma KATAYAMA

IPC: H10N30/87 ,  H02N2/10 ,  H02N2/00 ,  H10N30/853 ,  H10N30/082 ,  H10N30/06

CPC classification number: H10N30/87 ,  H02N2/108 ,  H02N2/22 ,  H10N30/8548 ,  H10N30/082 ,  H10N30/06 ,  G02B26/0858

Abstract: A drive element includes: a fixing part; a drive part placed on a lateral side of the fixing part and coupled to the fixing part; and a movable part configured to be driven by the drive part. A lower electrode, a piezoelectric layer, and an upper electrode are formed in order in an upper surface region of the fixing part and the drive part, and in a wiring region on the fixing part side of the upper surface region, a low dielectric layer containing at least one element forming the piezoelectric layer is formed on an upper surface of the piezoelectric layer.

公开(公告)号：US11877515B2

公开(公告)日：2024-01-16

申请号：US17658965

申请日：2022-04-12

Applicant: KYOCERA Corporation

Inventor： Fumiaki Nakao

IPC: H10N30/20 ,  G06F3/041 ,  H02N2/04 ,  G06F3/01 ,  B06B1/06 ,  H02N2/00 ,  H02N2/06

CPC classification number: H10N30/202 ,  B06B1/06 ,  G06F3/01 ,  G06F3/016 ,  G06F3/041 ,  H02N2/0055 ,  H02N2/04 ,  H02N2/06

Abstract: An actuator and tactile sensation providing apparatus include an actuator including a piezoelectric element, a vibration plate, and a support. The vibration plate has the piezoelectric element joined thereto and vibrates in accordance with displacement of the piezoelectric element. The support supports the vibration plate and is configured so that an end of the vibration plate is displaced more in a longitudinal direction than in a normal direction of the vibration plate in accordance with displacement of the piezoelectric element. The angle between the vibration plate and the support is acute. The tactile sensation providing apparatus can further include an object of vibration configured to provide a tactile sensation to a user by vibration of the vibration plate being transmitted to the object of vibration.

公开(公告)号：US11876463B2

公开(公告)日：2024-01-16

申请号：US16960775

申请日：2019-01-04

Applicant: GQENERGY SRL

Inventor： Ernesto Franceschini

IPC: H02N2/18 ,  H02N2/00 ,  H10N30/098 ,  H10N30/857

CPC classification number: H02N2/18 ,  H02N2/22 ,  H10N30/098 ,  H10N30/857

Abstract: An electric generator (10) that comprises:—a first layer (11) based on a polyvinyl polymer;—a second layer (12) made of graphite or graphene in contact with the first layer (11);—a first electrical contact (13) connected to the first layer (11); and—a second electrical contact (14) connected to the second layer (12).

公开(公告)号：US11870369B2

公开(公告)日：2024-01-09

申请号：US17230364

申请日：2021-04-14

Applicant: Robert Bosch GmbH

Inventor： Jochen Tomaschko ,  Christoph Kaiser ,  Timo Schary ,  Daniel Monteiro Diniz Reis

IPC: H02N2/02 ,  H02N2/00 ,  G02B26/08 ,  G02B26/10 ,  H10N30/06 ,  H10N30/87

CPC classification number: H02N2/028 ,  G02B26/0833 ,  G02B26/101 ,  H02N2/22 ,  H10N30/06 ,  H10N30/87

Abstract: A microelectronics device, in particular a thin-film electronics device, having at least one bearer substrate and having at least one pyramidally layered, piezo stack situated on the bearer substrate, which stack has at least one piezo element and at least one electrode, in particular a floor electrode, and having at least one contact opening situated on the at least one electrode. The microelectronics device has a diffusion blocking element that is situated on the at least one electrode at least partly at a distance from the piezo element, and/or the contact opening forms a contact surface that is at most as large as one one-thousandth of a surface of the at least one piezo element, and/or a length of an electrical path from the at least one contact opening to the at least one piezo element corresponds to at least twice the circumference of the at least one contact opening.