A touch sensor assembly includes a touch substrate attached to a rear surface of a panel having a touch point, a piezo disk having first and second poles stacked thereon, wherein the first pole is disposed on at least a central portion of a front surface thereof and aligned in a direction facing the touch substrate to be fixed to a rear surface of the touch substrate, a pressing tab flexibly provided on the touch substrate, electrically connected to the first pole upon being in contact with the first pole, and electrically connected to a plurality of wires provided on the touch substrate at a plurality of points, and a fixing surface electrically connected to the second pole while supporting the second pole such that the piezo disk is fixed to the rear surface of the touch substrate and electrically connected to second wires provided on the touch substrate.