A touch sensor assembly for a household appliance comprising: an insulating substrate formed of a resin material; a conductive layer provided over an upper surface of the insulating substrate to form a printed circuit; a protective layer provided over an upper surface of the conductive layer; a sensor mounting portion formed by the upper surface of the conductive layer, which is exposed through the protective layer; at least one solder contact provided on the upper surface of the sensor mounting portion; a touch sensor including a metal plate, and a ceramic element installed on an upper surface of the metal plate, wherein a lower surface of the metal plate is attached to an upper surface of the sensor mounting portion using the at least one solder contact; and a conductive foil covering the protective layer and the touch sensor, characterized in that the conductive foil comprises: an outer guide line with a diameter corresponding to the diameter of the metal plate; an inner guide line formed within the outer guide line and having a diameter corresponding to the diameter of the ceramic element; a center conductive line which extends at the center of the conductive foil in a lengthwise direction of the conductive foil and connects the inner guide line and the outer guide line; and a circumferential conductive line in a grid shape formed on an inner side of the inner guide line and an outer side of the outer guide line. an insulating substrate formed of a resin material; a conductive layer provided over an upper surface of the insulating substrate to form a printed circuit; a protective layer provided over an upper surface of the conductive layer; a sensor mounting portion formed by the upper surface of the conductive layer, which is exposed through the protective layer; at least one solder contact provided on the upper surface of the sensor mounting portion; a touch sensor including a metal plate, and a ceramic element installed on an upper surface of the metal plate, wherein a lower surface of the metal plate is attached to an upper surface of the sensor mounting portion using the at least one solder contact; and a conductive foil covering the protective layer and the touch sensor, characterized in that the conductive foil comprises: an outer guide line with a diameter corresponding to the diameter of the metal plate; an inner guide line formed within the outer guide line and having a diameter corresponding to the diameter of the ceramic element; a center conductive line which extends at the center of the conductive foil in a lengthwise direction of the conductive foil and connects the inner guide line and the outer guide line; and a circumferential conductive line in a grid shape formed on an inner side of the inner guide line and an outer side of the outer guide line. an outer guide line with a diameter corresponding to the diameter of the metal plate; an inner guide line formed within the outer guide line and having a diameter corresponding to the diameter of the ceramic element; a center conductive line which extends at the center of the conductive foil in a lengthwise direction of the conductive foil and connects the inner guide line and the outer guide line; and a circumferential conductive line in a grid shape formed on an inner side of the inner guide line and an outer side of the outer guide line.