Touch Panel Systems Corporation

Satoshi Inoue

Yoshikazu Tanaka

A touch panel comprises a substrate allowing acoustic wave to be propagated and a transducer , mounted to this substrate, for transmitting or receiving the acoustic wave. A chamfered portion is formed in the end face or the corner portion of the substrate to make the acoustic wave turn around and be propagated from the front surface to the rear surface through the end face of the substrate . The acoustic wave propagated through the chamfered portion is received by the transducer placed on the rear surface of the substrate . The radius (R) of the chamfered portion of the substrate is 0.5 mm or more. This touch panel may prevent from forming raised portions on the front surface of the propagation medium, so that the touch panel may be enhanced in applicability to thin LCD monitors, and simplified in structure.

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Izumi, Japan

Satoshi Inoue