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Method and apparatus for coating an organic thin film on a substrate from a fluid source with continuous feed capability

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A method for coating a thin film of a non-polymeric compound on a substrate by providing a mixture of the non-polymeric compound and a fluid carrier. This mixture is then pumped into the interior of a heated evaporation box having an internal temperature sufficient to convert substantially all of the non-polymeric compound and fluid carrier to a gaseous form. The non-polymeric compound and fluid carrier are then removed from the evaporation box via exit slit in the evaporation box. Adjacent to the exit slit, and maintained in a vacuum, is a substrate upon which the non-polymeric compound condenses. The substrate is in motion, for example on a web roller, thereby allowing a continuous coating of the non-polymeric compound to be applied to the substrate.
Burrows, Paul E. (Kennewick, WA), Graff, Gordon L. (West Richland, WA), Sapochak, Linda S. (Kennewick, WA), Hall, Michael G. (West Richland, WA)
10/ 685,891
October 14, 2003
[0001] This invention was made with U.S. Government support under Contract DE-AC0676RL01830 awarded by the U.S. Department of Energy. The U.S. Government has certain rights in the invention.