公开(公告)号：US11157115B2

公开(公告)日：2021-10-26

申请号：US15476244

申请日：2017-03-31

Applicant: Apple Inc.

Inventor： Ehsan Khajeh ,  Brian Michael King ,  Marcus Yip ,  Aaron Scott Tucker ,  Mohammad Yeke Yazdandoost ,  Marduke Yousefpor ,  Giovanni Gozzini

IPC: G06F3/043 ,  G06F3/041 ,  G06F3/039

Abstract: The present disclosure relates to one or more intermediate layers located on a surface of a cover material of an acoustic touch screen. In some examples, the one or more layers can include one or more intermediate layers. The one or more intermediate layers can include a first layer including a plurality of features and a second layer located between the first layer and the cover material. In a touch condition, the touch object can apply a force to the top surface of the acoustic touch sensor. The applied force can create one or more local bends causing the plurality of features to move closer to the cover material and causing one or more surface discontinuities in the cover material. The acoustic waves can undergo reflections (e.g., causing the signal to be attenuated) due to the discontinuities located in the path of the wave propagation.

公开(公告)号：US10802651B2

公开(公告)日：2020-10-13

申请号：US16256942

申请日：2019-01-24

Applicant: Apple Inc.

Inventor： Ehsan Khajeh ,  Aaron Scott Tucker ,  Brian Michael King ,  George Ho Yin Mak ,  Marcus Yip ,  Mohammad Yeke Yazdandoost

IPC: G06F3/043 ,  G06F3/041

Abstract: This relates to system architectures, apparatus and methods for acoustic touch detection (touch sensing) and exemplary applications of the system architectures, apparatus and methods. In some examples, the acoustic touch sensing techniques described herein can be used on a glass surface of a display or touch screen. In some examples, an acoustic touch sensing system can be configured to be insensitive to contact on the device surface by water, and thus acoustic touch sensing can be used for touch sensing in devices that are likely to become wet or fully submerged in water.