Printed and Thin Film Transistors and Memory

Those new transistors that are printed, such as the Hewlett Packard ones using Zinc Oxide based transistors in thermal inkjet printers, can be made at very high speed, reel to reel over large areas. Such area is needed for driving the pixels of huge billboards and signage for example. Currently most of the new transistors are limited to frequencies around tens of megahertz, but this still embraces the most popular frequency for RFID permitting sales of trillions to be contemplated rather than the limit of no more than tens of billions yearly imposed by the cost of the silicon chip in today’s RFID label.