Method for assembling and hermetically sealing an encapsulating package
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United States of America Patent
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Nov 18, 2014
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app pub date -
Dec 23, 2011
filing date -
Feb 2, 2011
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Abstract
A method of assembling and hermetically sealing a package including a side wall mounted on a substrate, with the space thus defined accommodating a component that operates in a controlled atmosphere, the space being closed off by a hermetic sealing cover mounted on said side wall. This method involves depositing a metallic connector element, also referred to as a brazing preform, on the upper face of the side wall; depositing the upper cover on, and in contact with, the brazing preform; subjecting the assembly thus obtained to the desired environment in terms of the kind of gas and operating pressure of the component; increasing the temperature to a value that is at least in excess of the melting temperature of the material that constitutes the brazing preform; then lowering said temperature in order to cause solidification of said brazing material and, consequently, sealing of the cover on the side wall.
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