公开(公告)号：WO2015106183A1

公开(公告)日：2015-07-16

申请号：PCT/US2015/010969

申请日：2015-01-12

Applicant: APPLE INC.

Inventor： FILIZ, Sinan ,  PEDDER, James E. ,  OGATA, Charley T. ,  SMITH, John Stephen ,  PATEL, Dhaval Chandrakant ,  CHOI, Shin John ,  HUPPI, Brian Q. ,  BUTLER, Christopher J. ,  GRUNTHANER, Martin P.

IPC: G01L1/18 ,  G01L1/20

CPC classification number: G06F3/0414 ,  G01L1/005 ,  G01L1/16 ,  G01L1/18 ,  G01L1/20 ,  G01L1/205 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/045 ,  G06F2203/04103 ,  G06F2203/04105 ,  G06F2203/04111

Abstract: An optically transparent force sensor that may compensate for environmental effects, including, for example, variations in temperature of the device or the surroundings. In some examples, two force-sensitive layers are separated by a compliant layer. The relative electrical response of the two force-sensitive layers may be used to compute an estimate of the force of a touch that reduces the effect of variations in temperature. In some examples, piezoelectric films having anisotropic strain properties are used to reduce the effects of temperature.

Abstract translation: 可以补偿环境影响的光学透明的力传感器，包括例如装置或周围环境的温度变化。 在一些示例中，两个力敏感层由柔顺层分开。 可以使用两个力敏感层的相对电响应来计算降低温度变化影响的触摸力的估计。 在一些实例中，使用具有各向异性应变特性的压电膜来降低温度的影响。