Abstract
A 3-D touch panel includes a 3-D touch sensor, a capacitance sensing unit electrically connected to the 3-D touch sensor, and a processing unit electrically connected to capacitance sensing unit. The 3-D touch sensor includes a flexible substrate, a flexible plane, a first electrode, and a second electrode. The flexible plane is configured on the flexible substrate and used for a user to touch thereon. The first electrode and the second electrode are correspondingly and respectively configured on the flexible substrate and the flexible plane, and a capacitance forms between the first electrode and the second electrode. The capacitance sensing unit is used for sensing the value of the capacitance, and the processing unit calculates the shearing force, which the user applies on the flexible plane, according to the difference of the capacitance value.