NMOS AND CMOS POLYSILICON DRIVE CIRCUITS FOR LIQUID-CRYSTAL DISPLAYS

A number of circuits that form the basic elements needed for integrati on of the drive circuits for active matrix LC displays have been inves tigated. The circuits have been fabricated using a low temperature pol ysilicon process and measurements have been made of the circuit perfor mance. NMOS and CMOS circuits have been compared and while ratioed NMO S circuits have a poor performance in terms of speed and power, ratiol ess NMOS and CMOS circuit can both provide high-speed low-power operat ion.