Direct Metal Patterning by Inkjet Technology

Inkjet technologies are believed to be suitable for the mask-less production of various electronics devices. The "Printable Electronics" by inkjet technologies makes big benefits as showed below; 1) direct printing of metal pattern on large substrate, 2) manufacturing of a small quantity but many kinds of devices 3) real-time production by digital design 4) small loss of coating materials. In this paper, jetting performance of Ag nano particle dispersed ink with a print head for industrial uses will be described. The material compatibility of a print head against ink solvents, and surface control of the printed substrate will be discussed for stable ejection and reliable patterning.