プリンテッドエレクトロニクス実現を目指したプロセス技術開発

抄録

The development of super-high-resolution and high-throughput printing technologies was necessary for the advancement of printed electronics. We investigated a microcontact printing technique for making the super-fine patterns required in printed electronics. The interfacial phenomena are essential for using microcontact printing to print super-fine patterns. An all-printed organic thin film transistor (TFT) array (200 ppi, 192 M transistors, 10 inches in size) was successfully fabricated on a polymer film by printing silver nano-particles as a conductive material, poly (3-hexylthiophene) and⁄or its derivatives as a semi-conductor, and organic dielectrics as an insulator. For high-throughput production, new printing methods are proposed: screen-offset printing and wet-on-wet printing. We attempted to fabricate sensor grids for touch panel devices and organic TFT arrays by using a screen-offset printing technique and wet-on-wet printing technique, respectively.