Reduction of surface and embedded substrate charge by controlled exposure to vacuum ultraviolet (VUV) light in low-oxygen environment
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United States of America Patent
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Nov 19, 2019
Grant Date -
Mar 8, 2018
app pub date -
Sep 7, 2016
filing date -
Sep 7, 2016
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Abstract
A system for reducing surface and embedded charge in a substrate includes a substrate support configured to support a substrate. A vacuum ultraviolet (VUV) assembly is arranged adjacent to the substrate and includes a housing and a VUV lamp that is connected to the housing and that generates and directs ultraviolet (UV) light at the substrate. A movement device is configured to move at least one of the VUV assembly and the substrate support during exposure of the substrate to the UV light to reduce surface and embedded charge in the substrate.
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