TOUCH SCREEN USING TIME DIVISION MULTIPLEX SURFACE ACOUSTIC WAVES AND ITS EMBODIMENT METHOD

摘要

A touch screen using a time division multiplex SAW(Surface Acoustic Wave) and an implementing method thereof are provided to miniaturize a SAW oscillator and precisely detect a pressure level by precisely detecting a position of a touch screen with the SAW varying a frequency according to time. The first SAW converter arrays(20,21) for generating a SAW signal having a different central frequency are installed to one edge of a substrate. The second SAW converter array(30,31) for receiving the SAW signal generated from the first SAW convert array are installed to the opposite edge. The SAW signal generated from the first SAW converter arrays is received to the matched second SAW converter arrays through a media of the substrate.