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    Force Sensing Using Dual-Layer Cover Glass with Gel Adhesive and Capacitive Sensing
    13.
    发明申请
    Force Sensing Using Dual-Layer Cover Glass with Gel Adhesive and Capacitive Sensing 审中-公开
    使用双层盖玻璃与凝胶粘合力和电容感应力传感

    公开(公告)号：US20140085253A1

    公开(公告)日：2014-03-27

    申请号：US13676992

    申请日：2012-11-14

    Applicant: APPLE INC.

    Inventor： Omar Sze Leung ,  Jonah A. Harley ,  James E. Wright ,  Craig Christopher Leong ,  Kristina A. Babiarz

    IPC: G06F3/044

    CPC classification number: G06F3/044 ,  G06F3/0414 ,  G06F2203/04105

    Abstract: A touch device including a force sensor disposed between capacitive sensing structures, so both touch and force sensing occur capacitively using device drivers in rows and columns. A dual-layer cover glass, with gel adhesive separating first and second CG layers, so capacitive sensing between the first and second CG layers can determine both touch locations and applied force. The first and second CG layers include a compressible material having a Poisson's ratio of less than approximately 0.48, the force sensor being embedded therein, or disposed between the first and second CG layers. Applied force is detected using capacitive detection of depression of the first CG layer. Depression is responsive to compressible features smaller than optical wavelengths, so those features are substantially invisible to users. Alternatively, the compressible features may be large enough to be seen by a user, but made substantially invisible through the use of a fluid or other element filling spaces between the features. Such a fluid may have an index of refraction equal to, or nearly equal to, the index of refraction of the compressible features.

    Abstract translation: 一种触摸装置，其包括设置在电容感测结构之间的力传感器，因此使用行和列中的设备驱动器电容地进行触摸和力感测。 双层护罩玻璃，其中凝胶粘合剂分离第一和第二CG层，使得第一和第二CG层之间的电容感应可以确定触摸位置和施加的力。 第一和第二CG层包括泊松比小于约0.48的可压缩材料，力传感器嵌入其中或设置在第一和第二CG层之间。 使用第一CG层的凹陷的电容检测来检测施加的力。 抑制响应于比光波长小的可压缩特征，因此这些特征对于用户基本上是不可见的。 或者，可压缩特征可以足够大以被使用者看到，但是通过使用在特征之间填充空间的流体或其它元件基本上不可见。 这样的流体可以具有等于或几乎等于可压缩特征的折射率的折射率。

    Force sensing of inputs through strain analysis
    19.
    发明授权
    Force sensing of inputs through strain analysis 有权

    公开(公告)号：US09952703B2

    公开(公告)日：2018-04-24

    申请号：US14776592

    申请日：2013-03-15

    Applicant: Apple Inc.

    Inventor： Storrs T. Hoen ,  Kristina A. Babiarz ,  Miguel C. Christophy ,  Romain A. Teil ,  Sinan Filiz ,  Vivek Katiyar

    IPC: G06F3/041 ,  G06F3/0488

    CPC classification number: G06F3/0414 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0488 ,  G06F2203/04103

    Abstract: An electronic device has a force sensor that determines a measure of applied force from a user contacting a cover glass of the device. In one embodiment, a frame at least partially encloses an interior of the electronic device and has an open end. A cover glass covers the open end of the frame and is movably connected to the frame to allow movement of the cover glass in response to one or more forces applied to an external surface of the cover glass. A plurality of strain probes is positioned under the cover glass, between the cover glass and the frame, and is arranged to output a plurality of strain signals responsive to the one or more forces applied to the cover glass. A force processing module is configured to at least calculate an amount of force applied to the cover glass based on the plurality of stain signals.

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