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    Low acoustic noise capacitors
    1.
    发明授权
    Low acoustic noise capacitors 有权
    低噪声电容器

    公开(公告)号：US09287049B2

    公开(公告)日：2016-03-15

    申请号：US13872000

    申请日：2013-04-26

    Applicant: Apple Inc.

    Inventor： Gang Ning ,  Shawn Xavier Arnold ,  Jeffrey M. Thoma ,  Henry H. Yang

    IPC: H01G4/35 ,  H01G4/30 ,  H01G4/232 ,  H05K3/34

    CPC classification number: H01G4/35 ,  H01G4/2325 ,  H01G4/30 ,  H05K3/3442 ,  H05K2201/10015

    Abstract: The described embodiments relate generally to a capacitor assembly for mounting on a printed circuit board (PCB) and more specifically to designs for mechanically isolating the capacitor assembly from the PCB to reduce an acoustic noise produced when the capacitor imparts a piezoelectric force on the PCB. Termination elements in the capacitor assembly, including a porous conductive layer in the capacitor assembly may reduce an amount of vibrational energy transferred from the capacitor to the PCB. Termination elements including a soft contact layer may also reduce the amount of vibrational energy transferred to the PCB. Further, capacitor assemblies having thickened dielectric material may reduce the amount of vibrational energy transferred to the PCB.

    Abstract translation: 所描述的实施例通常涉及用于安装在印刷电路板（PCB）上的电容器组件，更具体地涉及用于将电容器组件与PCB机械隔离的设计，以减少当电容器在PCB上施加压电力时产生的声学噪声。 电容器组件中的终端元件，包括电容器组件中的多孔导电层可以减少从电容器传递到PCB的振动能量。 包括软接触层的端接元件也可以减少传递到PCB的振动能量。 此外，具有增厚的介电材料的电容器组件可以减少传递到PCB的振动能量。

    Electronic Device With Printed Circuit Board Noise Reduction Using Elastomeric Damming and Damping Structures
    2.
    发明申请
    Electronic Device With Printed Circuit Board Noise Reduction Using Elastomeric Damming and Damping Structures 有权
    使用弹性阻尼和阻尼结构的印刷电路板降噪电子设备

    公开(公告)号：US20150070864A1

    公开(公告)日：2015-03-12

    申请号：US14020059

    申请日：2013-09-06

    Applicant: Apple Inc.

    Inventor： Amanda R. Rainer ,  Connor R. Duke ,  James W. Bilanski ,  Jeffrey M. Thoma ,  Michael Eng ,  Mingzhe Li ,  Sung Woo Yoo ,  Miguel Alejandro Lara-Pena ,  Weng Choy Foo ,  Kieran Poulain

    IPC: H01L23/29 ,  H01L25/065 ,  H05K1/03 ,  H01L21/56

    CPC classification number: H05K1/0393 ,  H01L21/563 ,  H01L25/0655 ,  H01L2224/73204 ,  H05K1/181 ,  H05K3/284 ,  H05K2201/0133 ,  H05K2201/10015 ,  H05K2201/10977 ,  H05K2201/2045 ,  H05K2203/0126 ,  H05K2203/304

    Abstract: An electronic device may be provided with integrated circuits and electrical components such as capacitors that are soldered to printed circuit boards. Liquid polymer adhesive such as encapsulant and underfill materials may be deposited on the printed circuit. Electrical components such as capacitors may be coated with the encapsulant. The underfill may be deposited adjacent to an integrated circuit, so that the underfill wicks into a gap between the integrated circuit and the printed circuit board. The encapsulant may be more viscous than the underfill and may therefore prevent the flowing underfill from reaching the electrical components. Some of the encapsulant may be located between the electrical components and the printed circuit board. The encapsulant can be cured to form an elastomeric material covering the electrical components that helps damp vibrations. The elastomeric material may be less stiff than the underfill.

    Abstract translation: 电子设备可以设置有集成电路和电气部件，例如电焊接到印刷电路板的电容器。 诸如密封剂和底部填充材料的液体聚合物粘合剂可以沉积在印刷电路上。 诸如电容器的电气部件可以用密封剂涂覆。 底部填充物可以沉积在集成电路附近，使得底部填充物吸入集成电路和印刷电路板之间的间隙中。 密封剂可能比底部填充剂更粘稠，因此可以防止流动的底部填充物到达电气部件。 一些密封剂可以位于电气部件和印刷电路板之间。 密封剂可以被固化以形成覆盖电气部件的弹性材料，其有助于阻止振动。 弹性材料的硬度可能低于底部填充物。

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