PRESSURE SENSITIVE PROJECTED CAPACITIVE TOUCH SENSING

摘要

A projected capacitive touch panel that can detect touch pressure. The cover layer of projected capacitive touch panel has protrusions with gaps that fill up partially when finger is pressed, thereby registering a large change in projected capacitance. A keyboard using such device with optional mechanical switches underneath the touch surface for tactile feedback. Haptic feedback is coupled to detection of touch pressure. Reconfigurable keyboard and trackpad regions on a touch panel sensitive to touch pressure with tactile feedback from underlying mechanical switches. A mouse with left and right click support using projected capacitive touchpad with pressure detection for mouse click. Human finger based mimicking of mouse operation in combination with touch pressure detection. Supporting gestures that use touch pressure. Providing a visual feedback in an underlying display when touch pressure is detected. Providing an audio feedback when touch pressure is detected.

主权项

1. A projected capacitive touch panel comprising:
a plurality of drive electrodes that are conductive; a plurality of sense electrodes that are conductive; a dielectric material separating said drive electrode from said sense electrodes; a cover layer comprising of a dielectric material, positioned above said sense electrodes and above said drive electrodes, wherein said cover layer has ridges that protrude out from the top surface.