Touch sensitive surface for an electronic device with false touch protection

摘要

A touch sensitive surface (401) for an electronic device (200) includes a capacitive touchpad (409). A grille (413) of non-conductive material (515) is disposed along at least a portion of the touch sensitive surface. A predefined threshold of a normal force component (804) applied by a user's finger or other conductive object overcomes the grille (413) to allow the finger or other conductive object to interact with the capacitive touchpad. The touch sensitive surface reduces false touch activation occurrences and can simulate the tactility of a mechanical switch.

主权项

1. An electronic device, comprising:
a housing substrate that forms at least one side of the electronic device, the housing substrate comprising a non-conductive portion and a conductive portion; and a touch sensitive surface disposed along the conductive portion of the housing substrate, wherein the non-conductive portion of the housing substrate is disposed on either side of the touch sensitive surface, the touch sensitive surface comprising:
a capacitive touchpad spanning the touch sensitive surface;an adhesive layer bonding the capacitive touchpad to a first side of the housing substrate; anda grille of non-conductive material disposed along at least a portion of the capacitive touchpad, wherein the grille is adhesively attached to the conductive portion of the housing substrate on a side of the housing opposite the touch sensitive surface.