Shielding design for metal gap fill
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United States of America Patent
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Jan 9, 2018
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app pub date -
Jan 5, 2015
filing date -
Jan 23, 2012
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Abstract
The present disclosure is directed to a physical vapor deposition system configured to heat a semiconductor substrate or wafer. In some embodiments the disclosed physical vapor deposition system comprises at least one heat source having one or more lamp modules for heating of the substrate. The lamp modules may be separated from the substrate by a shielding device. In some embodiments, the shielding device comprises a one-piece device or a two piece device. The disclosed physical vapor deposition system can heat the semiconductor substrate, reflowing a metal film deposited thereon without the necessity for separate chambers, thereby decreasing process time, requiring less thermal budget, and decreasing substrate damage.
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