Multi-touch screen device
Abstract:
Provided is a multi-touch screen device that may calculate x and y orthogonal coordinates of a touch area even if a receiving/transmitting element is arranged on only one of the x-axis and the y-axis. The receiving/transmitting element is not arranged on both the x-axis and the y-axis so that an infrared ray scans a touch area in a matrix configuration, but an infrared receiving/transmitting element is arranged on only one of the x-axis and y-axis so that one receiving module sequentially scans the touch area using a right-angle scan measurement signal and an oblique-angle scan measurement signal. The multi-touch screen device may decrease the number of receiving/transmitting elements for use and solve a ghost image problem that occurs in a multi-touch operation that uses infrared rays.
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