Abstract: A touchscreen device includes: a touch sensing unit including a transmission module configured to transmit a touch measurement signal and a reception module configured to receive the touch measurement signal from the transmission module; a control unit configured to control the transmission module and the reception module and calculate a touch position according to an output signal of the touch sensing unit; a position indication unit disposed adjacent to the touch sensing unit and configured to emit visibly recognizable light; and a support member configured to support the touch sensing unit and the position indication unit. When the touch sensing unit senses a motion of a user in a sensing region, the control unit controls the position indication unit to emit light that is turned on and off to be visibly recognizable.

Abstract: A touchscreen device includes: a touch sensing unit including a transmission module configured to transmit a touch measurement signal and a reception module configured to receive the touch measurement signal from the transmission module; a control unit configured to control the transmission module and the reception module and calculate a touch position according to an output signal of the touch sensing unit; a position indication unit disposed adjacent to the touch sensing unit and configured to emit visibly recognizable light; and a support member configured to support the touch sensing unit and the position indication unit. When the touch sensing unit senses a motion of a user in a sensing region, the control unit controls the position indication unit to emit light that is turned on and off to be visibly recognizable.

Abstract: The touch screen apparatus according to the invention includes: a first frame having a plurality of optical transmission units arranged in a row along a first direction and stacked in a third direction orthogonal to the first direction; a second frame facing the first frame and having a plurality of optical reception units arranged in a row along the first direction and stacked in the third direction; and a control unit connected to the first frame and the second frame for controlling the plurality of optical transmission units and the plurality of optical reception units to be operated, and detecting a touch position in a three-dimensional space by using a signal detected at the plurality of optical reception units.

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.

Abstract: A multi-touch recognizing device for distinguishing an illusion from an actually touched position and an illusion position by using an inclination angle measuring method, minimizing time for measuring a touch position, and more accurately measuring the position is provided.

Abstract: A multi-touch recognizing device for distinguishing an illusion from an actually touched position and an illusion position by using an inclination angle measuring method, minimizing time for measuring a touch position, and more accurately measuring the position is provided.