Patent ID: 8411042

Claim:
An electronic device with a sensing function with no-hindrance touching, comprising: a casing having an opening; a touch display disposed in the opening for receiving an operation of an input tool, wherein the touch display comprises: a display disposed in the casing; a touch sensing means disposed over the display and in the opening, and the touch sensing means has a sensing surface, and the input tool can slide across the joint of the sensing surface and the casing without hindrance, wherein the touch sensing means comprises: a transparent substrate; a first conductor film disposed on the transparent substrate; a second conductor film disposed over the first conductor film; a plurality of electrodes penetrating the transparent substrate and respectively electrically connected to the first conductor film or the second conductor film; and a flexible circuit board disposed on a lower surface of the transparent substrate and electrically connected to the electrodes and the processor; and a processor electrically coupled to the flexible circuit board of the touch sensing means and the display of the touch display, wherein the processor determines a user interface displayed on the touch display, wherein the processor records a plurality of contact values in a specific duration, each of the contact values is a contact coordinate or a contact pressure detected when the input tool operates the touch display, the processor calculates an average of the contact values in the specific duration, calculates a variation range of the contact values in the specific duration according to differences between the contact values and the average, and then identifies a type of the input tool according to a size of the variation range.