Mechanical stress-decoupling in semiconductor device
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United States of America Patent
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Jun 5, 2018
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N/A
app pub date -
Apr 25, 2017
filing date -
May 14, 2014
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Abstract
According to a method in semiconductor device fabrication, a first trench and a second trench are concurrently etched in a semi-finished semiconductor device. The first trench is a mechanical decoupling trench between a first region of an eventual semiconductor device and a second region thereof. The method further includes concurrently passivating or insulating sidewalls of the first trench and of the second trench. A related semiconductor device includes a first trench configured to provide a mechanical decoupling between a first region and a second region of the semiconductor device. The semiconductor device further includes a second trench and a sidewall coating at sidewalls of the first trench and the second trench. The sidewall coating at the sidewalls of the first trench and at the sidewalls of the second trench are of the same material.
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