Carbon Nanotubes Flat Panel Displayer Fabricated and Its High Voltage Drive Circuits Designed

Carbon nanotubes field emission displays are new type modern flat panel displays, its research work is based on development of NANO technology and carbon nanotubes. In order to simplify the fabricated processes for flat panel displays, the printed carbon nanotubes cathode is used to instead of the micro-tip which was made by silicon photolithography. The control and drive circuits, especially the cathode high voltage drive circuits are one of more important research contents for carbon nanotubes cathode field emission displays, the optimum designed drive circuits will directly affect the quality of display and also cost of the displayer for sales, and few reports of control and drive systems are found in this area. In this article, the structure and characters of several high voltage drive circuits are analyzed and compared based on the research for carbon nanotube field emission displays, then proposed the optimized CMOS structure high voltage drive circuits, which constructed by high and low breakdown voltage MOSFETs, so reduced the circuits power dissipation and enhanced the response speed, more important, this circuits structure is easy to integration. The logic function of designed circuits is verified by spice simulation, and its output speed response are measured by made the test circuit boards. The designed circuits are used to drive our fabricated black-white 5-inch carbon nanotubes field emission displayer and result the stability and dynamic vision effects and high resolution display performances.