ALD COATING SYSTEM
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United States of America Patent
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app pub date -
Oct 14, 2011
filing date -
Oct 16, 2010
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Abstract
An ALD coating system (100) includes a fixed gas manifold (710, 1300) disposed over a moving substrate with a coating surface of the substrate facing precursor orifice plate (930). A gas control system (1400) delivers gas or vapor precursors and inert gas into the fixed gas manifold which directs input gases onto a coating surface of the moving substrate. The gas control system includes a blower (1485) interfaced with the gas manifold which draws gas through the gas manifold to remove unused precursors, inert gas and reaction byproduct from the coating surface. The gas manifold is configured segregate precursor gases at the coating surface to prevent the mixing of dissimilar precursors. The gas manifold may also segregate unused precursor gases in the exhaust system so that the unused precursors can be recovered and reused.
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