Title: Printed flexible RFID label with temperature and humidity sensors
Authors : Koller, M.
Küng, R.
Graf, M.
Frolet, N.
Vásquez-Quintero, A.
Briand, D.
de Rooij, N.F.
Conference details: Swiss ePrint, The Swiss Conference on Printed Electronics and Functional Materials, Basel, 21-22 November 2013
Issue Date: 2013
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : English
Subjects : RFID; Sensor; Plastic substrate; Flexible
Subject (DDC) : 004: Computer science
Abstract: The present work consists of developing a flexible RFID label which integrates CMOS humidity and temperature sensors silicon chip using large-area printing processes and advanced chip-on-flex assembly processes. We report on the designing, elaboration and testing of the smart flexible RFID labels. The approach consists of the technology transfer of a UHF RFID Tag from classic rigid-PCB to a flexible polymeric substrate by printing techniques. The fabrication of antenna and PCB on flexible, plastic substrates (PET) was performed by means of roto-screen printing. The latter allows a high thermal transfer to the printed material, which is necessary for its sintering, while preserving the delicate substrate. Cost-effective and low temperature methods are also developed for the assembling of the silicon chip: methods involving conductive glues and anisotropic conductive adhesive or film and chips placement; fixation and electrical connections are done using a chip bonder and printing/dispensing or lamination of the conductive and adhesives materials.
Departement: School of Engineering
Organisational Unit: Institute for Signal Processing and Wireless Communications (ISC)
Publication type: Conference poster
URI: https://digitalcollection.zhaw.ch/handle/11475/16681
Appears in Collections:Publikationen School of Engineering

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