Targeted control of the absorption behavior during laser resealing
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United States of America Patent
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Mar 13, 2018
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Nov 22, 2016
filing date -
Dec 8, 2015
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Abstract
A method for manufacturing a micromechanical component including a substrate and a cap, which is connected to the substrate and, together with the substrate, encloses a first cavity, a first pressure prevailing and a first gas mixture having a first chemical composition being enclosed in the first cavity, includes in a first task, an access opening connecting the first cavity to surroundings of the component is formed in the substrate or cap, in a second task, the first pressure and/or the first chemical composition is adjusted in the first cavity, in a third task, the access opening is sealed by introducing energy or heat into an absorbing part of the substrate or cap with a laser, the introduction of the energy or heat occurring by adjusting the extension of the absorbing part and adjusting the absorption strength in the absorbing part to minimize stresses occurring in the substrate or cap.
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