Non-contact type touch panel system, method of controlling same, and non-contact type input device mountable on existing touch screen

A modularized detachable input device for implementing a non-contact touch, the modularized detachable input device comprising:

• a bar-shaped body casing having a left plate having several rails longitudinally formed and a rear plate being a bottom, and entirely having an L-shaped cross-section, the left plate and the rear plate making a right angle;
• a touch board longitudinally inserted in one of the rails and sensing a position of input coordinates;
• a haptic board inserted in another one of the rails;
• a speaker coupled to the haptic board and outputting a sound when a touch signal is sensed by the touch board;
• a light emitter disposed at a front of the body casing, coupled to the left plate to cover the front of the body casing, and emitting light to the front of the body casing;
• and
• a finishing member coupled to a right side of the body casing such that the body casing has a closed rectangular cross-section,
• wherein the light emitter includes:
• a light source casing coupled to a side of the body casing and having a light source hole;
• a light diffusion cover inserted in the light source hole of the light source casing and transmitting light frontwards;
• a light source coupled to a side of the haptic board and radiating light;
• a light guide plate coupled to a rear surface of the light diffusion cover and diffusing light radiated from the light source to the light diffusion cover;
• and
• a reflection sheet coupled to a rear surface of the light guide plate,
• wherein the light diffusion cover includes:
• a diffusion base formed to be able to come in contact with a front surface of the light guide plate;
• and
• a diffusion insert protruding from a front surface of the diffusion base and having a size smaller than the diffusion base to be able to be inserted in the light source hole,
• the light guide plate is coupled to an upper portion of the haptic board in a line with the haptic board, and coupled in the body casing with the haptic board when the haptic board is inserted in the another one of the rails, and
• the light diffusion cover has a two steps including the diffusion base and the diffusion insert, the diffusion insert has the same size as the light source hole, and the diffusion base is disposed between the light source casing and the light guide plate when the diffusion insert is inserted in the light source hole.