HIGH PERFORMANCE TFT CIRCUITS FOR ALL-INTEGRATED SYSTEMS ON STAINLESS STEEL FOILS

摘要

In an attempt to fabricate all inclusive systems we are presenting a study on several elements that would be used as building blocks for all-on-board integrated applications on stainless steel foils. These systems would include in the same substrate all or many of the components of a modern day electronic device such as PDA or cellular phone. We are reporting results on both digital and analog circuits on stainless steel foils. An extensive study on shift registers running at speeds greater than 1.0MHz is shown as well as oscillators operating at over 40 Mhz. Pixel circuits for driving organic light emitting diodes are presented as well as experimental OLED's on the same steel material substrate. The device technology of choice is that based on poly-silicon TFT technology as it has the potential of producing circuits with good performance and considerable cost savings over the established processes on quartz or glass substrates (amorphous Silicon a-Si:H or silicon on Insulator SOI).