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公开(公告)号：US10725573B2
公开(公告)日：2020-07-28
申请号：US16056403
申请日：2018-08-06
Applicant: Apple Inc.
Inventor： Anuranjini Pragada , George Ho Yin Mak , Ehsan Khajeh , Brian Michael King , Maegan K. Spencer
Abstract: Acoustic touch sensing systems can include a mechanically integrated structure including multiple acoustic transducers. For example, an annular structure including one or more piezoelectric segments can be fabricated and then coupled to a front crystal/cover glass. A single structure can simplify the structural integration of the device, can provide a mechanically reliable and stable structure for improved structural integrity of the system, and can provide for improved water sealing for a waterproof or water resistant device. The piezoelectric material in the annular structure can be shear poled such that a poling direction of the piezoelectric material can follow the curvature of the annular piezoelectric structure.
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公开(公告)号：US10606418B2
公开(公告)日：2020-03-31
申请号：US15923967
申请日：2018-03-16
Applicant: Apple Inc.
Inventor： Marduke Yousefpor , Aaron Scott Tucker , Brian Michael King , Ehsan Khajeh , Marcus Yip , Mohammad Yeke Yazdandoost , Wesley W. Zuber
IPC: G06F3/043 , G06F3/0354 , G06F3/044
Abstract: An input device outfitted with one or more ultrasonic transducers can determine the location of one or more objects in contact with the input device. For example, the input device can include one or more transducers disposed in a ring around the circumference of the input device or in an array of rings along the length of the input device. The ultrasonic transducers can be used to detect the position of the one or more touching objects in at least one dimension, for example. In some examples, the one or more ultrasonic transducers can produce directional ultrasonic waves.
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公开(公告)号：US20180284946A1
公开(公告)日：2018-10-04
申请号：US15923967
申请日：2018-03-16
Applicant: Apple Inc.
Inventor： Marduke Yousefpor , Aaron Scott Tucker , Brian Michael King , Ehsan Khajeh , Marcus Yip , Mohammad Yeke Yazdandoost , Wesley W. Zuber
IPC: G06F3/043 , G06F3/0354
Abstract: An input device outfitted with one or more ultrasonic transducers can determine the location of one or more objects in contact with the input device. For example, the input device can include one or more transducers disposed in a ring around the circumference of the input device or in an array of rings along the length of the input device. The ultrasonic transducers can be used to detect the position of the one or more touching objects in at least one dimension, for example. In some examples, the one or more ultrasonic transducers can produce directional ultrasonic waves.
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24.发明授权公开(公告)号：US12205399B2
公开(公告)日：2025-01-21
申请号：US18331867
申请日：2023-06-08
Applicant: Apple Inc.
Inventor： Daniel J. Hiemstra , George Ho Yin Mak , Ehsan Khajeh , Hoishun Li
Abstract: Improving the accuracy of ultrasonic touch sensing and fingerprint imaging using acoustic impedance matching is disclosed. Acoustic impedance mismatches between an ultrasonic transducer array and a sensing plate can be reduced to maximize energy transfer and minimize parasitic reflections. A reduction in acoustic impedance mismatches can be accomplished using (i) a composite epoxy having a higher acoustic impedance than epoxy alone, (ii) one or more matching layers having an acoustic impedance that is approximately the geometric mean of the acoustic impedance of the sensing plate and the acoustic impedance of the transducer array, (iii) pores or perforations in the sensing plate, or (iv) geometric structures formed in the sensing plate. In addition, parasitic reflections can be suppressed using an absorbent layer.
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公开(公告)号：US12099683B2
公开(公告)日：2024-09-24
申请号：US18325565
申请日：2023-05-30
Applicant: Apple Inc.
Inventor： Marduke Yousefpor , Mohammad Yeke Yazdandoost , Aaron Scott Tucker , Marcus Yip , Ehsan Khajeh , Brian Michael King , Giovanni Gozzini
CPC classification number: G06F3/04166 , G06F3/043 , G06F3/0436 , G06F2203/04105 , G06F2203/04106
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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Patent Agency Ranking
公开(公告)号：US20240280676A1
公开(公告)日：2024-08-22
申请号：US18645177
申请日：2024-04-24
Applicant: Apple Inc.
Inventor： Gordon S. Franza , Gregory T. Minteer , Mohammad Yeke Yazdandoost , Dale Setlak , Marcus C. Yip , Ehsan Khajeh , Aaron S. Tucker , Andrew W. Joyce , Brian M. King , Giovanni Gozzini , Jason S. Griesbach
CPC classification number: G01S7/52033 , G01S7/52025 , G01S7/52036 , G01S15/8925 , G10K11/346 , G01S15/892 , G01S15/8927
Abstract: An acoustic imaging system coupled to an acoustic imaging medium to define an imaging surface. The acoustic imaging system includes an array of piezoelectric acoustic transducers formed at least in part from a thin-film piezoelectric material, such as PVDF. The array is coupled to the acoustic imaging medium opposite the imaging surface and formed using a thin-film manufacturing process over an application-specific integrated circuit that, in turn, is configured to leverage the array of piezoelectric actuators to generate an image of an object at least partially wetting to the imaging surface.
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27.发明授权公开(公告)号：US12039800B2
公开(公告)日：2024-07-16
申请号：US17709235
申请日：2022-03-30
Applicant: Apple Inc.
Inventor： Gordon S. Franza , Mohammad Yeke Yazdandoost , Dale Setlak , Marcus C. Yip , Ehsan Khajeh , Aaron S. Tucker , Andrew W. Joyce , Brian M. King , Giovanni Gozzini , Jason S. Griesbach , Henry H. Yang
CPC classification number: G06V40/1306 , B06B1/0215 , B06B1/0692 , G06F3/0433 , G06F3/0436 , B06B2201/70
Abstract: An acoustic imaging system coupled to an acoustic medium to define an imaging surface. The acoustic imaging system includes an array of piezoelectric acoustic transducers formed at least in part from a thin-film piezoelectric material, such as PVDF. The array is coupled to the acoustic medium opposite the imaging surface and formed using a thin-film manufacturing process over an application-specific integrated circuit that, in turn, is configured to leverage the array of piezoelectric actuators to generate an image of an object at least partially wetting to the imaging surface.
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公开(公告)号：US12000967B2
公开(公告)日：2024-06-04
申请号：US17709270
申请日：2022-03-30
Applicant: Apple Inc.
Inventor： Gordon S. Franza , Gregory T. Minteer , Mohammad Yeke Yazdandoost , Dale Setlak , Marcus C. Yip , Ehsan Khajeh , Aaron S. Tucker , Andrew W. Joyce , Brian M. King , Giovanni Gozzini , Jason S. Griesbach
CPC classification number: G01S7/52033 , G01S7/52025 , G01S7/52036 , G01S15/8925 , G10K11/346 , G01S15/892 , G01S15/8927
Abstract: An acoustic imaging system coupled to an acoustic imaging medium to define an imaging surface. The acoustic imaging system includes an array of piezoelectric acoustic transducers formed at least in part from a thin-film piezoelectric material, such as PVDF. The array is coupled to the acoustic imaging medium opposite the imaging surface and formed using a thin-film manufacturing process over an application-specific integrated circuit that, in turn, is configured to leverage the array of piezoelectric actuators to generate an image of an object at least partially wetting to the imaging surface.
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29.发明授权公开(公告)号：US11950512B2
公开(公告)日：2024-04-02
申请号：US17210023
申请日：2021-03-23
Applicant: Apple Inc.
Inventor： Ehsan Khajeh , Aaron S. Tucker , Andrew W. Joyce , Brian M. King , Giovanni Gozzini , Jason S. Griesbach , Marcus C. Yip , Mohammad Yeke Yazdandoost , Gordon S. Franza , Henry H. Yang
CPC classification number: H10N30/878 , H10N30/10516 , H10N30/2047
Abstract: An acoustic imaging system coupled to a sensing plate to define an imaging surface. The acoustic imaging system includes an array of piezoelectric acoustic transducers coupled to the sensing plate opposite the imaging surface and formed using a thin-film manufacturing process over an application-specific integrated circuit that, in turn, is configured to leverage the array of piezoelectric actuators to generate an image of an object at least partially wetting to the imaging surface.
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30.发明授权公开(公告)号：US11715321B2
公开(公告)日：2023-08-01
申请号：US17660308
申请日：2022-04-22
Applicant: Apple Inc.
Inventor： Daniel J. Hiemstra , George Ho Yin Mak , Ehsan Khajeh , Camille L. Everhart
CPC classification number: G06V40/1306 , G06F3/0412 , G06F3/0436 , G10K11/02
Abstract: Improving the accuracy of ultrasonic touch sensing and fingerprint imaging using acoustic impedance matching is disclosed. Acoustic impedance mismatches between an ultrasonic transducer array and a sensing plate can be reduced to maximize energy transfer and minimize parasitic reflections. A reduction in acoustic impedance mismatches can be accomplished using (i) a composite epoxy having a higher acoustic impedance than epoxy alone, (ii) one or more matching layers having an acoustic impedance that is approximately the geometric mean of the acoustic impedance of the sensing plate and the acoustic impedance of the transducer array, (iii) pores or perforations in the sensing plate, or (iv) geometric structures formed in the sensing plate. In addition, parasitic reflections can be suppressed using an absorbent layer.
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