TOUCH SCREEN FOR COORDINATES COGNITION USING LUMINOUS BODY

摘要

PURPOSE: A touch screen for coordinate recognition is provided to easily recognize touch areas in case a touch area is inputted by using an infrared camera of a second sensor. CONSTITUTION: A touch panel includes light emitting units(110a-c). A first sensor is arrange din each corner of the touch panel and detects a light signal which is generated in a touch area on the touch panel. A second sensor(120b) is arranged in the center of the touch panel and detects a light signal. A controlling unit(130) calculates a light emitting location on the touch panel based on scanning information of the light signal. The second sensor has a viewing angle which is greater than the first sensor.