Refrigerator including touch sensor

A refrigerator comprising:

• a cool air supply device configured to supply cool air;
• a storage room configured to receive the supplied cool air so that food is storable in the storage room at a low temperature;
• a door configured to open and close the storage room, and to insulate the storage room from outside temperature;
• a panel on the door;
• and
• a printed circuit board (PCB) behind the panel, the PCB including:
• a pattern coil facing a first direction and configured to function as an inductive sensor and a capacitive sensor, and
• a touch integrated circuit (IC) configured to, based on the panel being touched by a user:
• obtain touch data generated by the pattern coil,
• based on the obtained touch data, identify the panel being touched by the user as a conductive panel or a non-conductive panel,
• based on the panel being identified as a conductive panel, process the user's touch by inductive sensing, and
• based on the panel being identified as a non-conductive panel, process the user's touch by capacitive sensing.