Matrix Touch Screens provide touch screen flexibility with membrane switch simplicity. They consist of ITO-coated top and bottom layers. The layers are separated by spacer dots. The ITO coating forms rows on one layer and columns on the other. When an area is touched, the conductive coating on the top layer completes an electrical contact against the coating on the bottom layer. These touch areas can be custom designed to meet specific layout requirements.
Matrix touch screens are low-cost, solutions that do not require a controller, driver or calibration.
Economical
Low-cost and reliable
Easy installation
No controller necessary
Drift free
Calibration not required
Surface Acoustic Wave (SAW) Touch Screen is an all-glass construction. Low frequency sound waves are generated by transducers at corners of the glass substrate. An array of reflectors along the sides of the screen direct the waves across the screen in fixed X and Y paths. The touch of a finger absorbs a portion of a wave. Receivers detect the resulting change in the signal. The controller analyzes the altered wave and plots the finger's position.
