A mobile terminal comprising: a main body comprising a wireless communication module; a wireless keypad configured to operate in a tactile manner in order to input information via the main body; and a driving unit configured to control the wireless keypad using power of the main body, characterized in that the driving unit comprises: a first electrode located in the main body and a second electrode located in the wire-less keypad; an electric field formation unit located in the main body, connected to the first electrode and configured to apply voltage to the first electrode to generate an electric field between the first and second electrodes; and a controller located in the main body, connected to the first electrode and configured to detect a position related to a touch applied to the wireless keypad based on a change in the electric field between the first and second electrodes generated by the touch, and in that the wireless keypad comprises a touch pad having a plurality of conductive patterns for detecting a position electrically connected to the second electrode such that an electrical path is formed between the conductive patterns and the first electrode, whereby a change in impedance of the conductive patterns caused by a user's finger brought into contact with a position where the conductive patterns are formed accordingly changes the capacitance and thus the electric field between the first and second electrodes. a main body comprising a wireless communication module; a wireless keypad configured to operate in a tactile manner in order to input information via the main body; and a driving unit configured to control the wireless keypad using power of the main body, characterized in that the driving unit comprises: a first electrode located in the main body and a second electrode located in the wire-less keypad; an electric field formation unit located in the main body, connected to the first electrode and configured to apply voltage to the first electrode to generate an electric field between the first and second electrodes; and a controller located in the main body, connected to the first electrode and configured to detect a position related to a touch applied to the wireless keypad based on a change in the electric field between the first and second electrodes generated by the touch, and in that a first electrode located in the main body and a second electrode located in the wire-less keypad; an electric field formation unit located in the main body, connected to the first electrode and configured to apply voltage to the first electrode to generate an electric field between the first and second electrodes; and a controller located in the main body, connected to the first electrode and configured to detect a position related to a touch applied to the wireless keypad based on a change in the electric field between the first and second electrodes generated by the touch, and in that the wireless keypad comprises a touch pad having a plurality of conductive patterns for detecting a position electrically connected to the second electrode such that an electrical path is formed between the conductive patterns and the first electrode, whereby a change in impedance of the conductive patterns caused by a user's finger brought into contact with a position where the conductive patterns are formed accordingly changes the capacitance and thus the electric field between the first and second electrodes.