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公开(公告)号：US11789537B2
公开(公告)日：2023-10-17
申请号：US17615395
申请日：2021-02-22
发明人： Yuju Chen , Hui Hua , Xiaotong Liu , Yongchun Tao , Jijing Huang
IPC分类号： G06F3/01 , G06F3/04886
CPC分类号： G06F3/016 , G06F3/04886
摘要： The application provides a haptic feedback method and apparatus for virtual keys, and an electronic device, and relates to the field of piezoelectric techniques. A touch display panel is controlled to display at least one virtual key, a touch position detected by the touch display panel is acquired, a target waveform parameter is determined according to a positional relationship between the touch position and each region in a target area corresponding to a target virtual key, and a target drive signal is generated according to the target waveform parameter and is sent to a piezoelectric element.
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公开(公告)号：US12067165B2
公开(公告)日：2024-08-20
申请号：US17620590
申请日：2021-02-26
发明人： Yongchun Tao , Yuju Chen , Hui Hua , Xiaotong Liu , Xiaofeng Yin
CPC分类号： G06F3/016 , B06B1/0215 , B06B1/0622 , G06F3/0416 , G06F3/0412
摘要： A haptic reproduction system comprises: a touch display device, an upper computer and a waveform generator. The touch display device comprises a piezoelectric unit, a touch display panel and a touch driving unit. The piezoelectric unit is disposed on the touch display panel. The touch driving unit is electrically connected to the touch display panel and the upper computer, and is configured to acquire touch information and transmit the touch information to the upper computer. The upper computer is electrically connected to the waveform generator, and is configured to send a first waveform generation instruction to the waveform generator according to the touch information. The waveform generator is configured to generate a first waveform signal according to the first waveform generation instruction. The piezoelectric unit is electrically connected to the waveform generator, and is configured to resonate with the touch display panel under the drive of the first waveform signal.
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公开(公告)号：US20240215453A1
公开(公告)日：2024-06-27
申请号：US17778172
申请日：2021-06-23
发明人： Hui Hua , Yuju Chen , Xiaofeng Yin
IPC分类号： H10N30/853 , B06B1/06 , C01G25/00 , G06F3/01
CPC分类号： H10N30/8554 , B06B1/0622 , C01G25/006 , G06F3/016 , C01P2002/34 , C01P2002/52 , C01P2002/76 , C01P2002/77 , C01P2006/40
摘要： A piezoelectric material and a piezoelectric device. The piezoelectric material includes: a matrix, wherein a crystal structure of the matrix is an ABO3-type perovskite structure, the perovskite structure includes a rhombohedral structure and a tetragonal structure that coexist, and the matrix is near a morphotropic phase boundary; and a doping element, wherein the doping element is for replacing an A-site element or a B-site element in the perovskite structure, or filling a space in the perovskite structure, and the doping element is for increasing a difference between a lattice constant of the rhombohedral structure and a lattice constant of the tetragonal structure.
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公开(公告)号：US20240207896A1
公开(公告)日：2024-06-27
申请号：US17905816
申请日：2021-12-27
发明人： Yuju Chen , Hui Hua , Xiaotong Liu
CPC分类号： B06B1/0692 , G06F3/016 , H10N39/00
摘要： A haptic substrate is provided. The haptic substrate includes a first electrode layer; an electroactive layer on the first electrode layer; a second electrode layer on a side of the electroactive layer away from the first electrode layer; a first pad layer electrically connected to the first electrode layer; and a second pad layer on a side of the second electrode layer away from the electroactive layer, the second pad layer being connected to the second electrode layer. In a region where an orthographic projection of the second electrode layer on a base substrate overlaps with the orthographic projection of the second pad layer on the base substrate, at least 30% of the second pad layer is in direct contact with the second electrode layer.
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5.发明公开公开(公告)号：US20240099145A1
公开(公告)日：2024-03-21
申请号：US18274229
申请日：2022-07-01
发明人： Hui Hua , Yuju Chen , Xiaotong Liu , Yongchun Tao
IPC分类号： H10N30/87 , B06B1/06 , G08B6/00 , H10N30/06 , H10N30/082
CPC分类号： H10N30/875 , B06B1/0622 , B06B1/0648 , G08B6/00 , H10N30/06 , H10N30/082
摘要： The present disclosure provides a piezoelectric device and a preparation method therefor, a panel, and a tactile reproduction apparatus. The piezoelectric device includes: a substrate; a bottom electrode layer disposed on the substrate; a piezoelectric functional layer disposed on the bottom electrode layer; a top electrode layer disposed on the piezoelectric functional layer; an insulation layer, arranged to cover an edge portion of the top electrode layer, the piezoelectric functional layer exposed from the top electrode layer and the bottom electrode layer exposed from the piezoelectric functional layer, an edge of the insulation layer has a slope angle less than 60 degrees; and a wiring layer disposed on the insulation layer, the wiring layer at least partially covers the top electrode layer exposed from the insulation layer, and the wiring layer covers the edge of the insulation layer in an overlapping area of the wiring layer and the insulation layer.
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公开(公告)号：US12030084B2
公开(公告)日：2024-07-09
申请号：US17427358
申请日：2020-10-30
发明人： Hui Hua , Yanzhao Li
IPC分类号： B06B1/02
CPC分类号： B06B1/0292
摘要： The present disclosure provides an ultrasonic transducer unit and a manufacturing method thereof. The ultrasonic transducer unit includes a substrate, a first electrode arranged on the substrate, an insulating layer arranged on the first electrode, a vibrating film arranged on the insulating layer, a closed cavity being between the vibrating film and the insulating layer, and a second electrode arranged on the vibrating film. The vibrating film is made of a photoresist. The ultrasonic transducer unit disclosed by the present disclosure adopts the photoresist as a material of the insulating layer and/or the vibrating film, so that the ultrasonic transducer unit with better performance can be obtained.
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公开(公告)号：US11847263B2
公开(公告)日：2023-12-19
申请号：US17620538
申请日：2021-02-26
发明人： Hui Hua , Yuju Chen , Xiaofeng Yin
CPC分类号： G06F3/016 , B06B1/0622
摘要： The present disclosure provides a haptic feedback base plate, a haptic feedback apparatus and a haptic feedback method. The haptic feedback base plate comprises: a substrate and a deformation unit disposed on one side of the substrate. The deformation unit comprises a first electrode, a piezoelectric material layer and a second electrode that are arranged in a stacked manner, the first electrode is arranged close to the substrate, the first electrode and the second electrode are configured to form an alternating electric field, and the piezoelectric material layer vibrates under the effect of the alternating electric field and drives the substrate to resonate, wherein a difference between a frequency of the alternating electric field and an inherent frequency of the substrate is less than or equal to a preset threshold.
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公开(公告)号：US11522121B2
公开(公告)日：2022-12-06
申请号：US17485227
申请日：2021-09-24
发明人： Hui Hua , Yuju Chen , Xiaofeng Yin
IPC分类号： H01L41/047 , G06F3/01 , H02N2/00
摘要： A tactile reproduction device, a method for driving the same, and a tactile reproduction apparatus. Tactile reproduction device may simulate textures to implement tactile reproduction. tactile reproduction device includes a plurality of piezoelectric units, includes: first electrode, piezoelectric section, and second electrode which are laminated, wherein the second electrode includes: first comb electrode and second comb electrode; the first comb electrode includes: a plurality of first comb-teeth electrodes and a first comb-shank electrode connecting the plurality of first comb-teeth electrodes; the second comb electrode includes: a plurality of second comb-teeth electrodes and a second comb-shank electrode connecting the plurality of second comb-teeth electrodes; the plurality of first comb-teeth electrodes and the plurality of second comb-teeth electrodes are mutually intersected; the first electrode includes a plurality of electrode units which are not connected to each other. The present disclosure is applicable to the production of tactile reproduction devices.
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