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    THERMAL COMPENSATION FOR FORCE-SENSITIVE BUTTON
    2.
    发明申请
    THERMAL COMPENSATION FOR FORCE-SENSITIVE BUTTON 审中-公开

    公开(公告)号：US20180067601A1

    公开(公告)日：2018-03-08

    申请号：US15257831

    申请日：2016-09-06

    Applicant: Apple Inc.

    Inventor： Eric S. WINOKUR ,  Robert Leo SHERIDAN ,  Leah M. GUM ,  Sora KIM ,  Giovanni GOZZINI

    IPC: G06F3/041 ,  G06F3/044 ,  G01K3/10

    CPC classification number: G06F3/0414 ,  G01K3/10 ,  G06F3/0418 ,  G06F3/044 ,  H03K17/975 ,  H03K2217/9658

    Abstract: Thermal compensation can be applied to force measurements of a force-sensitive button. A temperature differential between an object and the force-sensitive button can result in changes in the reconstructed force by the force sensor due to thermal effects rather than actual user force, which in turn can result in degraded performance of the force sensor (e.g., false positive or inconsistent activation force). In some examples, a force-sensitive button can include a force sensor configured to measure an amount of force applied to the force-sensitive button, and a temperature sensor configured to measure a temperature associated with the force sensor. The measured temperature can be used to compensate the amount of force measured by the force sensor based on the temperature associated with the force sensor. In some examples, the thermal compensation can be applied when an object is detected contacting the force-sensitive button (i.e., when rapid temperature differentials can occur).

    UNDER-DISPLAY OPTICAL FINGERPRINT SENSOR WITH NFV COLLIMATOR AND TFT/ORGANIC IMAGER
    4.
    发明申请
    UNDER-DISPLAY OPTICAL FINGERPRINT SENSOR WITH NFV COLLIMATOR AND TFT/ORGANIC IMAGER 有权

    公开(公告)号：US20210019017A1

    公开(公告)日：2021-01-21

    申请号：US16767887

    申请日：2019-07-02

    Applicant: Apple Inc.

    Inventor： Mohammad YEKE YAZDANDOOST ,  Giovanni GOZZINI ,  Dale SETLAK

    IPC: G06F3/042 ,  H01L51/44 ,  H01L51/52 ,  G06K9/00

    Abstract: An apparatus for fingerprint sensing includes a touch-display layer covered by a transparent layer. The touch-display layer can emit light to illuminate a finger surface touching the transparent layer. The touch-display layer is transparent to reflected light from the surface to underlying layers. The underlying layers include a collimator layer and a pixelated image sensor. The collimator layer can collimate the reflected light, and the pixelated image sensor can sense the collimated reflected light. The collimator can collimate the reflected light to enable a one-to-one imaging ratio between an area of the finger surface touching the transparent layer and an area of a corresponding image formed on the pixelated image sensor.

    FINGER BIOMETRIC SENSING DEVICE INCLUDING DRIVE SIGNAL NULLING CIRCUITRY AND RELATED METHODS
    6.
    发明申请
    FINGER BIOMETRIC SENSING DEVICE INCLUDING DRIVE SIGNAL NULLING CIRCUITRY AND RELATED METHODS 有权
    包括驱动信号的手指生物量感测装置空闲电路及相关方法

    公开(公告)号：US20130294662A1

    公开(公告)日：2013-11-07

    申请号：US13886554

    申请日：2013-05-03

    Applicant: APPLE INC.

    Inventor： Gordon S. Franza ,  Gregory T. MINTEER ,  Jerry G. DOOLEY ,  Patrick J. Landy ,  Dale R. SETLAK ,  Giovanni GOZZINI

    IPC: G06K9/00

    CPC classification number: G06K9/0002 ,  G06F3/038 ,  G06F3/044 ,  G06K9/00053 ,  G06K9/00087 ,  G06K9/03 ,  H03G3/3084

    Abstract: A finger biometric sensing device may include drive circuitry capable of generating a drive signal and an array of finger biometric sensing pixel electrodes cooperating with the drive circuitry and capable of generating a detected signal based upon placement of a finger adjacent the array of finger biometric sensing pixel electrodes. The detected signal may include a relatively large drive signal component and a relatively small sense signal component superimposed thereon. The finger biometric sensing device may also include a gain stage coupled to the array of finger biometric sensing pixel electrodes, and drive signal nulling circuitry coupled to the gain stage capable of reducing the relatively large drive signal component from the detected signal.

    Abstract translation: 手指生物特征感测装置可以包括能够产生驱动信号的驱动电路和与驱动电路配合的手指生物测定感测像素电极的阵列，并且能够基于手指生物体感测像素阵列的放置而产生检测信号 电极。 检测到的信号可以包括相对较大的驱动信号分量和叠加在其上的相对小的感测信号分量。 手指生物特征感测装置还可以包括耦合到手指生物测量感测像素电极阵列的增益级，以及耦合到增益级的驱动信号归零电路，其能够从检测到的信号中减少较大的驱动信号分量。

    DIFFERENTIAL ACOUSTIC TOUCH AND FORCE SENSING
    7.
    发明公开
    DIFFERENTIAL ACOUSTIC TOUCH AND FORCE SENSING 审中-公开

    公开(公告)号：US20230384892A1

    公开(公告)日：2023-11-30

    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

    IPC: G06F3/041 ,  G06F3/043

    CPC classification number: G06F3/04166 ,  G06F3/043 ,  G06F3/0436 ,  G06F2203/04106 ,  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.

    DIFFERENTIAL ACOUSTIC TOUCH AND FORCE SENSING
    8.
    发明申请
    DIFFERENTIAL ACOUSTIC TOUCH AND FORCE SENSING 有权

    公开(公告)号：US20220075497A1

    公开(公告)日：2022-03-10

    申请号：US17450441

    申请日：2021-10-08

    Applicant: Apple Inc.

    Inventor： Marduke YOUSEFPOR ,  Mohammad YEKE YAZDANDOOST ,  Aaron Scott TUCKER ,  Marcus YIP ,  Ehsan KHAJEH ,  Brian Michael KING ,  Giovanni GOZZINI

    IPC: G06F3/041 ,  G06F3/043

    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.

    ULTRASONIC WATER-AGNOSTIC TOUCH DETECTION SENSOR
    9.
    发明申请
    ULTRASONIC WATER-AGNOSTIC TOUCH DETECTION SENSOR 有权

    公开(公告)号：US20210404991A1

    公开(公告)日：2021-12-30

    申请号：US16917779

    申请日：2020-06-30

    Applicant: Apple Inc.

    Inventor： Ehsan KHAJEH ,  Brian Michael KING ,  George Ho Yin MAK ,  Marcus YIP ,  Giovanni GOZZINI

    IPC: G01N29/04 ,  G01N29/24 ,  G01N29/34 ,  G01V1/00 ,  G06F3/043 ,  G06F3/041

    Abstract: An ultrasonic touch sensing system that uses both compressional and shear waves for touch and water detection is disclosed. When no touch or water is present, less shear and compressional wave energy is absorbed, so both shear and compressional wave reflections do not have significant amplitude decreases. When a finger is in contact with the sensing plate, both shear and compressional wave energy is absorbed, so both shear and compressional wave reflections have significant amplitude decreases. When water is in contact with the sensing plate, compressional energy is absorbed but little or no shear wave energy is absorbed, so while compressional wave reflections have significant amplitude decreases, shear wave reflections do not. From these amplitudes, a determination can be made as to whether no touch is present on the sensing plate, whether a touch is present on the sensing plate, or whether water is present on the sensing plate.

    DIFFERENTIAL ACOUSTIC TOUCH AND FORCE SENSING
    10.
    发明申请
    DIFFERENTIAL ACOUSTIC TOUCH AND FORCE SENSING 审中-公开

    公开(公告)号：US20180341347A1

    公开(公告)日：2018-11-29

    申请号：US15988991

    申请日：2018-05-24

    Applicant: Apple Inc.

    Inventor： Marduke YOUSEFPOR ,  Mohammad YEKE YAZDANDOOST ,  Aaron Scott TUCKER ,  Marcus YIP ,  Ehsan KHAJEH ,  Brian Michael KING ,  Giovanni GOZZINI

    IPC: G06F3/043 ,  G06F3/041

    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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