Planarization and fabrication of bridges across deep groves or holes in silicon using a dry film photoresist followed by an etch back

Spiering, V.L. and Berenschot, J.W. and Elwenspoek, M. (1995) Planarization and fabrication of bridges across deep groves or holes in silicon using a dry film photoresist followed by an etch back. Journal of Micromechanics and Microengineering, 5 (2). pp. 189-192. ISSN 0960-1317

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Abstract:	A technique is presented that provides planarization after a very deep etching step in silicon. This offers the possibility for not only resist spinning and layer patterning but also for realization of bridges and cantilevers across deep grooves or holes. The technique contains a standard dry film lamination step to cover a wafer with a 38 mu m thick foil. Next the foil is etched back to the desired thickness of a few micrometres. This thin film facilitates resist spinning and high-resolution patterning. The planarization method is demonstrated by the fabrication of aluminium bridges across a deep groove in silicon.
Item Type:	Article
Copyright:	© Institute of Physics and IOP Publishing Limited 1995
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/14398
Official URL:	http://dx.doi.org/10.1088/0960-1317/5/2/036
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