An OLED display and touch screen system including a substrate; an OLED display
including an array of individually addressable OLEDs formed on the substrate; and
a touch screen including an OLED light emitter formed on the substrate and a light
sensor formed on the substrate across the display from the light emitter, and optics
located around the display above the light emitter and the light sensor for directing
light emitted from the light emitter across the display to the light sensor.