A mobile terminal device comprising: a touch screen; a touch driver configured for generating sensing data by sensing a touch on the touch screen; and a controller configured for detecting a touch intensity for each of the plurality of touches on the basis of the sensing data for each of the plurality of touches provided from the touch driver on a locking mode, and releasing the locking mode or executing a function corresponding to the plurality of detected touch intensities; wherein the touch screen includes: a plurality of touch driving electrodes (Tx1 ∼ Txn); an elastic dielectric member disposed on the plurality of touch driving electrodes; characterized by a plurality of touch sensing electrode groups (Rx G1 ∼ Rx Gm) disposed in parallel to each other and provided at fixed intervals on the elastic dielectric member, and respectively overlapped and intersected with the plurality of touch driving electrodes (Tx1 ∼ Txn), wherein each of the plurality of touch sensing electrode groups include a touch sensing electrode (Rx) and a first sub-electrode (Sxa); wherein the touch driver is configured to connect the first sub-electrode (Sxa) with the touch sensing electrode (Rx) for sensing the touch intensity, and to make the first sub-electrode electrically floating for sensing the touch location. a touch screen; a touch driver configured for generating sensing data by sensing a touch on the touch screen; and a controller configured for detecting a touch intensity for each of the plurality of touches on the basis of the sensing data for each of the plurality of touches provided from the touch driver on a locking mode, and releasing the locking mode or executing a function corresponding to the plurality of detected touch intensities; wherein the touch screen includes: a plurality of touch driving electrodes (Tx1 ∼ Txn); an elastic dielectric member disposed on the plurality of touch driving electrodes; characterized by a plurality of touch sensing electrode groups (Rx G1 ∼ Rx Gm) disposed in parallel to each other and provided at fixed intervals on the elastic dielectric member, and respectively overlapped and intersected with the plurality of touch driving electrodes (Tx1 ∼ Txn), wherein each of the plurality of touch sensing electrode groups include a touch sensing electrode (Rx) and a first sub-electrode (Sxa); wherein the touch driver is configured to connect the first sub-electrode (Sxa) with the touch sensing electrode (Rx) for sensing the touch intensity, and to make the first sub-electrode electrically floating for sensing the touch location. a plurality of touch driving electrodes (Tx1 ∼ Txn); an elastic dielectric member disposed on the plurality of touch driving electrodes; characterized by a plurality of touch sensing electrode groups (Rx G1 ∼ Rx Gm) disposed in parallel to each other and provided at fixed intervals on the elastic dielectric member, and respectively overlapped and intersected with the plurality of touch driving electrodes (Tx1 ∼ Txn), wherein each of the plurality of touch sensing electrode groups include a touch sensing electrode (Rx) and a first sub-electrode (Sxa); wherein the touch driver is configured to connect the first sub-electrode (Sxa) with the touch sensing electrode (Rx) for sensing the touch intensity, and to make the first sub-electrode electrically floating for sensing the touch location.