Methods and apparatuses for roll-on coating
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United States of America Patent
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Aug 5, 2014
Grant Date -
Oct 11, 2012
app pub date -
Apr 7, 2011
filing date -
Apr 7, 2011
priority date (Note) -
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Abstract
Methods and apparatuses for a deposition system are provided to deposit a thin coating layer on flat substrates, such as semiconductors or panels. In an embodiment, liquid supplied rollers accepting liquid media provide liquid chemicals to the substrates for coating the substrates. The liquid delivery system can control the flow and the pressure of the liquid to achieve optimum process condition with minimum excess waste. In another embodiment, rollers with non-uniform distribution of liquid media provide a non-uniform thickness profile on the substrates, which can be used to compensate for the non-uniformity of subsequent processes.
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