Multilayer Bandpass Filter on Liquid Crystal Polymer Substrates Using Inkjet Printing and Lamination Bonding Technologies

摘要

Inkjet printing technology, unlike the traditional photolithography technique, has been adopted for digital images to direct write layered patterns into substrate. The advantages of inkjet printing are cost-efficient, fast, and environmentally friendly make it as an emerging industrial technique. Moreover, inkjet printing technology provides wider selections of substrates, particularly integrated circuit on flexible substrates. Additionally, combining inkjet printing and lamination bonding technologies achieves multilayer integrated circuit for system-on-package technologies. This study developed inkjet printing and lamination bonding technologies to realize radio frequency filters on liquid crystal polymers substrates. The process conditions including surface wettability, inkjet printing and lamination bonding parameters, and sintering temperature were examined surface morphologies and electrical properties. Based on the optimal parameters, multilayer bandpass filter was fabricated to demonstrate the inkjet printing and lamination bonding technologies.