紫外线/臭氧处理对喷墨印刷铜图文和聚酰亚胺基材间相互作用的影响

Effect of UV/Ozone Treatment on Interactions between Ink-Jet Printed Cu Patterns and Polyimide Substrates

摘译近年来,喷墨印刷电子技术得到了迅速发展,因为相对于传统光刻技术需要通过真空处理、化学沉积和蚀刻来制作电路图案,喷墨印刷更简单、经济。目前,喷墨印刷已用于制作各种灵巧的电子器件,如薄膜晶体管、射频识别标签、印刷电路板等。

In this study,we apply UV/Ozone treatment to modify the surface properties of polyimide substrate and investigate the effects of UV/Ozone treatment on surface properties of polyimide and the morphologies of inkjet printed Cu patterns. Wettability of polyimide surface is enhanced by UV/Ozone treatment as confirmed by contact angle analysis and XPS results. The change in wettability affected droplet sizes and morphologies of ink -jet -printed lines.The average droplet size increased from 26.8μm on untreated polyimide to 42.5μm after UV/Ozone treatment.Furthermore,irregular patterns of coexisting beads and short lines were observed in untreated polyimide film,despite minimal overlap of dots.In contrast,patterns that were ink - jet printed on polyimide film that was modified by UV/Ozone for 1 h showed continuous lines with straight edges.