公开(公告)号：US20210089170A1

公开(公告)日：2021-03-25

申请号：US16938544

申请日：2020-07-24

Applicant: Apple Inc.

Inventor： Supratik DATTA ,  Karan JAIN ,  Zhiyuan SUN ,  Ho Hyung LEE ,  Da YU ,  Wei LIN ,  Nathan K. GUPTA ,  Chun-Chih CHANG

IPC: G06F3/044 ,  G06F3/041

Abstract: A two dimensional touch sensor panel can be thermoformed or curved by another process to a three-dimensional touch sensor panel, and the three-dimensional touch sensor panel can be laminated to a three-dimension surface having a highly curved or spherical shape. In some examples, thermoforming a two-dimensional touch sensor panel into a three-dimensional touch sensor panel can result in strain of the touch electrodes, and can result in non-uniform three-dimensional touch electrodes (distortion of the two-dimensional touch electrode pattern). The strain can be a function of the curved touch-sensitive surface and/or process related mechanical strain from thermoforming. In some examples, a three-dimensional touch sensor panel can be formed with uniform area touch electrodes using a two-dimensional touch sensor panel pattern with non-uniform area touch electrodes in accordance with the strain pattern expected for a given curved surface and thermoforming technique.