SILICON STRUCTURE HAVING AN OPENING WHICH HAS A HIGH ASPECT RATIO, METHOD FOR MANUFACTURING THE SAME, SYSTEM FOR MANUFACTURING THE SAME, AND PROGRAM FOR MANUFACTURING THE SAME, AND METHOD FOR MANUFACTURING ETCHING MASK FOR THE SILICON STRUCTURE
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United States of America Patent
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N/A
Issued Date -
Nov 5, 2009
app pub date -
Sep 19, 2007
filing date -
Nov 22, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided are a silicon structure having an opening which has a high aspect ratio and an etching mask for forming the silicon structure. A step of performing hole etching or trench etching of silicon so as to substantially expose a portion of at least a bottom surface of etched silicon and a step of forming a silicon oxide film by a CVD method on the silicon structure formed by the step of performing the hole etching or the trench etching are conducted. Thereafter, a step of exposing the formed silicon oxide film to a gas containing a hydrogen fluoride vapor is conducted. Further, the above-mentioned step of performing the hole etching or the trench etching is conducted again.
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