par Arutinov, Gari;Mastrangeli, Massimo ;Smits, Edsger C. P.;Van Heck, Gert;Den Toonder, J.;Dietzel, Andreas
Référence Journal of microelectromechanical systems, 24, 1, page (126-133)
Publication Publié, 2015
Référence Journal of microelectromechanical systems, 24, 1, page (126-133)
Publication Publié, 2015
Article révisé par les pairs
Résumé : | This paper introduces a new integration technology for cost-effective high-precision mechanical and electrical integration of mesoscopic functional foil components onto foil substrates. The foil-to-foil assembly process is based on topological surface structuring via laser patterning that enables accurate capillarity-driven self-alignment of foil dies. The concurrent establishment of high-yield electrical interconnections is obtained through conductive adhesives. The foil surface energy controls the acceptance window of initial offsets for optimal self-alignment performance. The proposed topological patterning and system design enable alignment accuracies for centimeter-sized foil dies as high as 15 μm, barely influenced by the evaporation of the assembly liquid and curing of the conductive paste. Full foil-to-foil system integration is demonstrated through the electrically functional assembly of an array of Au-sputtered capacitive humidity sensors onto a patterned base foil circuitry. |