A refrigerator comprising: a front panel defining an external surface of the refrigerator and having a touch area which includes a touch point; a touch board being a Printed Circuit Board and comprising: a first side attached to a location on a rear surface of the front panel, the location corresponding to the touch area; a second side opposite to the first side; a hole formed in the touch board at a position corresponding to the touch point, a center of the hole being aligned with a center of the touch point, a pressing portion formed in the center of the hole; and one or more bridges connecting an inner edge of the hole and an edge of the pressing portion; a holder that is positioned to overlap with the pressing portion and the hole, and that is attached to the second side of the touch board, the holder having a receiving portion; a piezo disc having a first electrode and a second electrode, the piezo disc configured to be inserted in the receiving portion of the holder and to contact the pressing portion; a guide board having a seating hole configured to receive the holder and the piezo disc, the guide board positioned on the second side of the touch board; and a first adhesive member attached to the first side of the touch board and configured to attach to the rear surface of the front panel. a front panel defining an external surface of the refrigerator and having a touch area which includes a touch point; a touch board being a Printed Circuit Board and comprising: a first side attached to a location on a rear surface of the front panel, the location corresponding to the touch area; a second side opposite to the first side; a hole formed in the touch board at a position corresponding to the touch point, a center of the hole being aligned with a center of the touch point, a pressing portion formed in the center of the hole; and one or more bridges connecting an inner edge of the hole and an edge of the pressing portion; a holder that is positioned to overlap with the pressing portion and the hole, and that is attached to the second side of the touch board, the holder having a receiving portion; a piezo disc having a first electrode and a second electrode, the piezo disc configured to be inserted in the receiving portion of the holder and to contact the pressing portion; a guide board having a seating hole configured to receive the holder and the piezo disc, the guide board positioned on the second side of the touch board; and a first adhesive member attached to the first side of the touch board and configured to attach to the rear surface of the front panel. a first side attached to a location on a rear surface of the front panel, the location corresponding to the touch area; a second side opposite to the first side; a hole formed in the touch board at a position corresponding to the touch point, a center of the hole being aligned with a center of the touch point, a pressing portion formed in the center of the hole; and one or more bridges connecting an inner edge of the hole and an edge of the pressing portion; a holder that is positioned to overlap with the pressing portion and the hole, and that is attached to the second side of the touch board, the holder having a receiving portion; a piezo disc having a first electrode and a second electrode, the piezo disc configured to be inserted in the receiving portion of the holder and to contact the pressing portion; a guide board having a seating hole configured to receive the holder and the piezo disc, the guide board positioned on the second side of the touch board; and a first adhesive member attached to the first side of the touch board and configured to attach to the rear surface of the front panel.