TY - GEN
T1 - Wafer-level chip scale flexible wireless microsystem fabrication
AU - Chao, Tzu Yuan
AU - Cheng, Yu-Ting
PY - 2011/4/13
Y1 - 2011/4/13
N2 - The paper demonstrates a low-cost flexible wireless microsystem fabrication technology combining the previously developed bumpless RFSOP scheme [1,2] with a special surface cleaning process to assemble a CMOS chip with an organic substrate (SU-8/PDMS) by Au-Au thermocompressive bonds (<200°C). About -15dB return loss and -0.8dB insertion loss @ 40GHz interconnecting structure and above 6MPa bonding strength make the technology practical for flexible wireless microsystem integration. Besides, taking advantage of chemical inertia of Au, a wafer-level sacrificial release process is performed for the low-cost fabrication.
AB - The paper demonstrates a low-cost flexible wireless microsystem fabrication technology combining the previously developed bumpless RFSOP scheme [1,2] with a special surface cleaning process to assemble a CMOS chip with an organic substrate (SU-8/PDMS) by Au-Au thermocompressive bonds (<200°C). About -15dB return loss and -0.8dB insertion loss @ 40GHz interconnecting structure and above 6MPa bonding strength make the technology practical for flexible wireless microsystem integration. Besides, taking advantage of chemical inertia of Au, a wafer-level sacrificial release process is performed for the low-cost fabrication.
UR - http://www.scopus.com/inward/record.url?scp=79953784070&partnerID=8YFLogxK
U2 - 10.1109/MEMSYS.2011.5734432
DO - 10.1109/MEMSYS.2011.5734432
M3 - Conference contribution
AN - SCOPUS:79953784070
SN - 9781424496327
T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
SP - 344
EP - 347
BT - 2011 IEEE 24th International Conference on Micro Electro Mechanical Systems, MEMS 2011
Y2 - 23 January 2011 through 27 January 2011
ER -