Touch input device

PURPOSE: A touch input apparatus is provided to offer the convenience of an input method by reinforcing input convenience in a portable terminal. CONSTITUTION: A LED(Light Emitting Diode)(45) is installed on a PCB(Printed Circuit Board) and is connected to the PCB. A holder(30) is arranged around the LED and is installed on the PCB. A touch sensor(20) is arranged in the upper side of the holder and the LED and includes optical permeability. The touch sensor detects the capacitance change of the touch sensor when a touch signal is detected. The color and brightness of the LED are changed according to the change of capacitance capacity.