METHOD AND APPARATUS FOR APPLYING A COATING AT A HIGH RATE ONTO NON-LINE-OF-SIGHT REGIONS OF A SUBSTRATE
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Jul 7, 2011
filing date -
Jul 7, 2011
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Abandoned
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Abstract
The present invention provides for a method and apparatus for the directed vapor deposition (DVD) on non-line of sight (NLOS) portions of a substrate. The method and apparatus includes evaporating a first material for deposition on to the substrate, the evaporating generating a plurality of vapor molecules. The method and apparatus therein provides for the insertion of a carrier gas and the direction of the vapor molecules to be deposited in NLOS regions of the substrate. One embodiment utilizes plasma activation to ionize the vapor particles and bias the substrate to attract the charged vapor molecules onto the NLOS portion. Another embodiment uses an inert gas as the carrier gas. Another embodiment includes pre-heating the carrier gas prior to its insertion into the deposition chamber. Whereby the varying embodiments and combinations herein improve NLOS DVD.
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