REUSABLE COMPOSITE STENCIL FOR SPRAY PROCESSES
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United States of America Patent
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Issued Date -
Aug 31, 2023
app pub date -
Feb 25, 2022
filing date -
Feb 25, 2022
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Abstract
Reusable composite stencils for spray processes, particularly for spray processes used in the fabrication of integrated circuit devices, may be fabricated having a permanent core and at least one sacrificial material layer. Thus, in operation, when a predetermined amount of the sacrificial material layer has been ablated away by a material being sprayed in the spray process, the remaining sacrificial material layer may be removed and reapplied to its original thickness. Therefore, the permanent core, which is usually expensive and/or difficult to fabricate, may be repeatedly reused.
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