Force Sensing Using Dual-Layer Cover Glass with Gel Adhesive and Capacitive Sensing

    公开(公告)号:US20140085247A1

    公开(公告)日:2014-03-27

    申请号:US13624855

    申请日:2012-09-21

    Applicant: APPLE INC.

    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.

    Electronic Devices Having Infared-Transparent Antireflection Coatings

    公开(公告)号:US20200096686A1

    公开(公告)日:2020-03-26

    申请号:US16566627

    申请日:2019-09-10

    Applicant: Apple Inc.

    Abstract: An electronic device may have a display cover layer provided with an infrared-transparent antireflection coating. A pixel array may emit visible light through the cover layer and the coating. An infrared emitter may emit infrared light and an infrared sensor may receive infrared light through the coating and the cover layer. The coating may include a stack of thin-film interference layers. The stack may include alternating lower and higher refractive index layers. The layers may have thicknesses and materials that configure the coating to exhibit an infrared transmittance of greater than 94% from 920 nm to 960 nm and a photopic reflectance of less than 1.5%. The coating may reflect visible light to prevent displayed images from being obscured by visible reflections. At the same time, some photopic reflectance of the coating may be sacrificed to maximize infrared transmittance and accommodate operation by the infrared emitter and sensor.

    Forming features in a ceramic component for an electronic device

    公开(公告)号:US10216233B2

    公开(公告)日:2019-02-26

    申请号:US14843004

    申请日:2015-09-02

    Applicant: Apple Inc.

    Abstract: A three-dimensional feature is formed in a surface of a component. Material is removed from the component by rotating an abrading tool about a first axis. While the abrading tool is rotated, the component (and/or a shaft coupled to the abrading tool) is rotated on a second axis. The second axis may be transverse to the first axis and may run through a center of the three-dimensional feature. The abrading tool may correspond to the three-dimensional feature. For example, the abrading tool may be configured to contact an entirety of an exterior of the three-dimensional feature during the removal operation, fill the three-dimensional feature during the removal operation, and/or have a shape that corresponds to the shape of the three-dimensional feature in two planes that are normal to each other.

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