Ir type input device having pressure sensor

PURPOSE: An infrared type touch input device having a pressure sensor is provided to change the thickness without clicking a menu by expressing thickness of a path which is expressed on a screen according to the size of a pressure which sanctions a touch panel. CONSTITUTION: A pressure sensor(130) senses pressure which a user presses a touch panel. A control unit(150) configures and displays a path by sensing a coordinate change of an input point based on the change of a data inputted in a light guiding unit/light receiving unit(112,114) of a frame. The control unit designates characteristic of the point of the path based on a change of a pressure which is measure from the pressure sensor. If an input does not exists in constant time, the control unit performs an idle mode which stops an operation of the infrared ray light guiding unit/light receiving unit.