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公开(公告)号：US12175040B2
公开(公告)日：2024-12-24
申请号：US18152765
申请日：2023-01-11
Applicant: SCHIATEK LIMITED COMPANY
Inventor： Wen-Hua Chang
Abstract: The present disclosure provides a device for ultrasonic sensing, which includes a driver circuit configured to generate an ultrasonic signal, a piezoelectric element having a first electrode and a second electrode, a blocking transistor configured to connect the piezoelectric element with the second electrode to a fixed bias voltage, and a source rectifier including a gate, a drain, and a source electrically connected to the piezoelectric element and the blocking transistor. The piezoelectric element is coupled with the driver circuit with the first electrode. The blocking transistor includes a gate for receiving a blocking control signal, a drain electrically connected to the second electrode of the piezoelectric element, and a source electrically connected to the fixed bias voltage, wherein, in response to the blocking signal, the blocking transistor is configured to be turned on within a transmission period and to be turned off within a receiving period.
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公开(公告)号：US20240264703A1
公开(公告)日：2024-08-08
申请号：US18164152
申请日：2023-02-03
Applicant: Infineon Technologies AG
Inventor： Emanuel STOICESCU , Erhard LANDGRAF
CPC classification number: G06F3/0433 , B06B3/04 , G06F3/0418 , B06B2201/40
Abstract: An ultrasonic touch sensor includes a touch structure configured to receive a touch; a transmitter arrangement configured to transmit one or more ultrasonic transmit waves toward the touch structure; a receiver arrangement configured to receive ultrasonic reflected waves produced by reflections of the one or more ultrasonic transmit waves and generate a plurality of measurement signals representative of the ultrasonic reflected waves; and a measurement circuit configured to measure a degree of variation of a plurality of measurement signals, compare the degree of variation with a detection threshold, and determine whether a no-touch event or a touch event has occurred at the touch structure based on whether the degree of variation satisfies the detection threshold.
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公开(公告)号：US11928882B2
公开(公告)日：2024-03-12
申请号：US17719700
申请日：2022-04-13
Applicant: Darwin Precisions Corporation
Inventor： Yu Jen Lai , Ya Han Ko , Yu-Ming Huang , Chia Tsun Huang
IPC: G06F3/01 , G06F3/043 , G06F3/044 , G06V10/143 , G06V10/147 , G06V40/13
CPC classification number: G06V40/1312 , G06F3/016 , G06F3/0436 , G06F3/044 , G06V10/143 , G06V10/147 , G06V40/1318 , G06V40/1324 , G06F2203/04106 , G06F2203/04107
Abstract: The present invention provides a display device, which includes a frame having an accommodating cavity and a display module disposed in the accommodating cavity. The display module includes a first light source, an optical unit, an imaging unit arranged on a side of the optical unit facing away from the first light source, and a lens array arranged on a side of the imaging unit facing away from the first light source. Corresponding to a preset pattern, light emitted by the first light source passes through the optical unit, the imaging unit and the lens array to form a default floating image in a floating display area outside the accommodating cavity. In addition, the present invention also provides a non-contact key and an input device including the above display module.
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公开(公告)号：US20240061531A1
公开(公告)日：2024-02-22
申请号：US18497759
申请日：2023-10-30
Applicant: UltraSense Systems, Inc.
Inventor： Michael Chen , Zhongxuan Tu , Sina Akhbari , Hao-Yen Tang
CPC classification number: G06F3/04186 , G06F3/043 , G06F2203/04105
Abstract: A multi-virtual button finger-touch input system includes a cover layer, force-measuring and touch-sensing integrated circuits (FMTSICs), each coupled to the inner surface of the cover layer corresponding to one of the virtual buttons, an elongate flexible circuit, and a host controller. The FMTSICs are mounted to the elongate flexible circuit. The host controller is in communication with each of the FMTSICs via digital bus wiring. The host controller is configured to: (1) obtain force-localization features and ultrasound-localization features of the FMTSICs and (2) determine whether an event is a finger-touch event or a false-trigger event and if the event is determined to be finger-touch event, identify one of the virtual buttons as a touched virtual button, using at least in part a model that has the force-localization features and the ultrasound-localization features as inputs. The force-localization features and ultrasound-localization features are derived from the PMFE digital data and the PMUT digital data respectively.
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公开(公告)号：US11908225B2
公开(公告)日：2024-02-20
申请号：US18002048
申请日：2021-07-02
Applicant: QUALCOMM Incorporated
Inventor： Vishnu Vardhan Kasilya Sudarsan , Sumeet Kumar Sahu , Naga Chandan Babu Gudivada , Rakesh Pallerla
CPC classification number: G06V40/1306 , G06F3/043 , G06F3/04166 , G06V40/1365
Abstract: In one example, a method comprises: receiving an indication that an object is within a distance from an array of ultrasonic transducers; based on the indication, configuring a subset of the array of ultrasonic transducers to perform an ultrasonic sensing operation on the object; obtaining, from the subset of the array of ultrasonic transducers, an output of the ultrasonic sensing operation; and performing an action based on the output of the ultrasonic sensing operation.
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Patent Agency Ranking
公开(公告)号：US11907464B2
公开(公告)日：2024-02-20
申请号：US17715706
申请日：2022-04-07
Applicant: Sentons Inc.
Inventor： Samuel W. Sheng , Shih-Ming Shih , Shirish A. Altekar , Lapoe E. Lynn , Yenyu Hsieh
CPC classification number: G06F3/0416 , G06F3/0433 , G06F3/0436
Abstract: A signal to be used to propagate a propagating signal through a propagating medium with a touch input surface is sent. The propagating signal has been allowed to propagate through the propagating medium to a plurality of receivers coupled to the propagating medium. A received signal affected by a contact contacting the touch input surface is received. At least a portion of the received signal is compared with one or more reference signal signatures.
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公开(公告)号：US11861115B2
公开(公告)日：2024-01-02
申请号：US17664398
申请日：2022-05-20
Applicant: Apple Inc.
Inventor： Mohammad Yeke Yazdandoost , Giovanni Gozzini , Brian Michael King , Marcus Yip , Ehsan Khajeh , Aaron Scott Tucker
IPC: G06F3/044 , G06F3/043 , G06F1/16 , G06F3/0354
CPC classification number: G06F3/044 , G06F1/1605 , G06F1/1656 , G06F3/03545 , G06F3/0436 , G06F2203/04105
Abstract: Acoustic touch and/or force sensing system architectures and methods for acoustic touch and/or force sensing can be used to detect a position of an object touching a surface and an amount of force applied to the surface by the object. The position and/or an applied force can be determined using time-of-flight (TOF) techniques, for example. Acoustic touch sensing can utilize transducers (e.g., piezoelectric) to simultaneously transmit ultrasonic waves along a surface and through a thickness of a deformable material. The location of the object and the applied force can be determined based on the amount of time elapsing between the transmission of the waves and receipt of the reflected waves. In some examples, an acoustic touch sensing system can be insensitive to water contact on the device surface, and thus acoustic touch sensing can be used for touch sensing in devices that may become wet or fully submerged in water.
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8.发明授权公开(公告)号：US11850629B2
公开(公告)日：2023-12-26
申请号：US17253659
申请日：2020-05-25
Applicant: BOE Technology Group Co., Ltd.
Inventor： Chenyang Zhang , Yingming Liu , Haisheng Wang , Peixiao Li , Xiufeng Li , Yuzhen Guo , Yanling Han , Lijun Zhao
CPC classification number: B06B1/0607 , B06B1/067 , G01D5/62 , G06F3/043 , B06B2201/55
Abstract: A piezoelectric sensor assembly, a manufacturing method thereof, a display panel and an electronic device including the same are provided. The piezoelectric sensor assembly includes: a base substrate; a plurality of ultrasonic transducers, wherein a spacing area is provided between two adjacent ultrasonic transducers; and an acoustic matching layer, wherein the acoustic matching layer includes a plurality of acoustic matching areas, and an orthographic projection of at least one acoustic matching area on the base substrate falls into an orthographic projection of the ultrasonic transducer corresponding to the acoustic matching area on the base substrate, wherein an isolation cavity is provided between two adjacent acoustic matching areas.
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公开(公告)号：US11837009B2
公开(公告)日：2023-12-05
申请号：US17247781
申请日：2020-12-22
Applicant: QUALCOMM Incorporated
Inventor： Kohei Azumi
CPC classification number: G06V40/1306 , G06F3/043 , G06F3/0412 , G06F3/04166
Abstract: An ultrasonic fingerprint sensor may include sensor pixels with interleaved ultrasonically-sensitive regions. Each of a plurality of sensor pixels in the ultrasonic fingerprint sensor may include nine distinct ultrasonically-sensitive regions electrically coupled to a common readout circuit, where there is an ultrasonically-sensitive region of another sensor pixel disposed between each of the nine distinct ultrasonically-sensitive regions. The ultrasonic fingerprint sensor may further include circuitry for binning together groups of sensor pixels during certain lower-resolution operations such as touch sensor operations. The ultrasonic fingerprint sensor may be used in capturing fingerprint images that are then used in an authentication process.
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公开(公告)号：US11829555B2
公开(公告)日：2023-11-28
申请号：US17240790
申请日：2021-04-26
Applicant: Sentons Inc.
Inventor： Lapoe E. Lynn , Samuel W. Sheng , Shih-Ming Shih , Yenyu Hsieh
CPC classification number: G06F3/0418 , G06F3/041 , G06F3/043 , G06F3/0433 , G06F3/0436 , G06F3/165 , H03G3/02 , G06F2203/04106
Abstract: An indicator identifying a force intensity of a touch input provided on a touch input surface is received. It is determined that the touch input is associated with an audio volume control. An audio volume is controlled based at least in part on the indicator identifying the force intensity of the touch input.
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