Integrated optical proximity sensor based on organic photodiodes and organic LEDs

A polymer thin-film optical touch and proximity sensor is presented. The sensor is based on the monolithic integration of polymer light emitting diodes, logos or displays, and polymer photodiodes on a common substrate. The main interest in this new form of optical sensor lies in its potentially cost-effective manufacture on thin and flexible substrates. Potential applications of such systems range from simple information displays with integrated touch-screen to biochemical sensors.