Glass frit as a hermetic joining layer in laser based joining of miniature devices

Wu, Qiang, Lorenz, Norbert, Cannon, Kevin and Hand, Duncan (2010) Glass frit as a hermetic joining layer in laser based joining of miniature devices. IEEE Transactions on Components and Packaging Technologies, 33 (2). pp. 470-477. ISSN 1521-3331

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Abstract

In this paper, we investigate the feasibility of using a laser as the heat source to drive a hermetic joining process based on a glass frit intermediate layer. The laser allows the necessary heat energy to be provided in a localized manner; important either as part of a multistage process, or to allow thermally-sensitive materials to be used inside the package. Our study includes an investigation of the impact of rough and grooved surfaces on the hermeticity and strength of the join, demonstrating the robust nature of the process, and its ability to allow feed-throughs to the center of package. Hermetic sealing is demonstrated, with leak rates of 10-9 mbar 1s-1, satisfying the military standard MIL-STD-883G.

Item Type:	Article
Subjects:	F200 Materials Science
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Ay Okpokam
Date Deposited:	26 May 2015 14:48
Last Modified:	12 Oct 2019 19:07
URI:	http://nrl.northumbria.ac.uk/id/eprint/22580

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