Sunlight can damage a conventional touch screen display and cause the display to be quite difficult to read. Furthermore, conventional touch screen displays are easily damaged, and, once damaged, the entire touch screen is replaced. To address these concerns, a
touch panel includes anti-reflective coatings on the surfaces of the top plate and the base plate that are open to the air. These coatings substantially reduce reflections and make the touch screen easier to read in direct
sunlight. In particular, the anti-reflective
coating used on the upper surface of the base plate is
dielectric in nature to reduce
reflectivity even further. This
dielectric coating includes openings to an underlying conductive layer so that an electrical contact is made when a user deflects the top plate into the base plate. Also, the top plate may be detachably coupled to the base plate, advantageously by double stick
adhesive tape, so that only the top plate is replaced when damaged. In one embodiment, the top plate is placed in tension within a frame to prevent wrinkling. Furthermore, a resistive
voltage divider may be fabricated on the base plate. The resistive
voltage divider may include a substantially continuous strip of resistive material disposed on the conductive layer of the base plate, and a plurality of conductive traces disposed on the
dielectric layer of the base plate and coupled to the resistive material in selected locations.