A home appliance, comprising: an exterior member including a front panel and defining an outer appearance thereof, the exterior member being formed of a metal plate; a touch sensor assembly mounted on a rear surface of the front panel, the touch sensor assembly including: a sensor PCB made of a plastic material; a copper film printed on a first surface of the sensor PCB; a sensor provided along the first surface of the sensor PCB for detecting displacement of the exterior member, the sensor including a piezo-sensor configured to detect displacement based on a user touching the exterior member; a sensor housing attached to an inner surface of the exterior member, the sensor housing defining a space configured to accommodate the sensor PCB; and an elastic member disposed on a second surface of the sensor PCB that is opposite of the first surface on which the sensor is mounted, the elastic member being configured to press the sensor PCB to thereby stabilize the sensor PCB relative to the exterior member, wherein the sensor includes: a metal plate which is elastically deformable according to a pressure of a touch manipulation of the exterior member; and a ceramic device attached to a top surface of the metal plate to cause variations in quantity of electricity due to varying pressure, wherein the elastic member includes: a plurality of supports extending from the sensor PCB at positions outside the sensor, the plurality of supports configured to face each other; and a connection part that connects corresponding ends of the supports to each other. an exterior member including a front panel and defining an outer appearance thereof, the exterior member being formed of a metal plate; a touch sensor assembly mounted on a rear surface of the front panel, the touch sensor assembly including: a sensor PCB made of a plastic material; a copper film printed on a first surface of the sensor PCB; a sensor provided along the first surface of the sensor PCB for detecting displacement of the exterior member, the sensor including a piezo-sensor configured to detect displacement based on a user touching the exterior member; a sensor housing attached to an inner surface of the exterior member, the sensor housing defining a space configured to accommodate the sensor PCB; and an elastic member disposed on a second surface of the sensor PCB that is opposite of the first surface on which the sensor is mounted, the elastic member being configured to press the sensor PCB to thereby stabilize the sensor PCB relative to the exterior member, wherein the sensor includes: a metal plate which is elastically deformable according to a pressure of a touch manipulation of the exterior member; and a ceramic device attached to a top surface of the metal plate to cause variations in quantity of electricity due to varying pressure, wherein the elastic member includes: a plurality of supports extending from the sensor PCB at positions outside the sensor, the plurality of supports configured to face each other; and a connection part that connects corresponding ends of the supports to each other. a sensor PCB made of a plastic material; a copper film printed on a first surface of the sensor PCB; a sensor provided along the first surface of the sensor PCB for detecting displacement of the exterior member, the sensor including a piezo-sensor configured to detect displacement based on a user touching the exterior member; a sensor housing attached to an inner surface of the exterior member, the sensor housing defining a space configured to accommodate the sensor PCB; and an elastic member disposed on a second surface of the sensor PCB that is opposite of the first surface on which the sensor is mounted, the elastic member being configured to press the sensor PCB to thereby stabilize the sensor PCB relative to the exterior member, wherein the sensor includes: a metal plate which is elastically deformable according to a pressure of a touch manipulation of the exterior member; and a ceramic device attached to a top surface of the metal plate to cause variations in quantity of electricity due to varying pressure, wherein the elastic member includes: a plurality of supports extending from the sensor PCB at positions outside the sensor, the plurality of supports configured to face each other; and a connection part that connects corresponding ends of the supports to each other. a metal plate which is elastically deformable according to a pressure of a touch manipulation of the exterior member; and a ceramic device attached to a top surface of the metal plate to cause variations in quantity of electricity due to varying pressure, wherein the elastic member includes: a plurality of supports extending from the sensor PCB at positions outside the sensor, the plurality of supports configured to face each other; and a connection part that connects corresponding ends of the supports to each other. a plurality of supports extending from the sensor PCB at positions outside the sensor, the plurality of supports configured to face each other; and a connection part that connects corresponding ends of the supports to each other.