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Technology Stocks : Energy Conversion Devices

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To: alfranco who wrote (6950)	10/30/2002 11:43:48 PM
From: alfranco	Read Replies (1) of 8393

ddl, the PVD-CVD patent is tailored to solar radiation control films...not to PVs :-( The circular layout of the machine is shown in both this #6463874 and ECD's earlier PVD-CVD patent #6186090 and is very similar to circular machine layout in 1997 Southwall patent #5494743 for AR/IR glazing treatments. ECD delivered a, likely older design, machine to Southwall in late 1999/early 2000 as I recollect. ECD's patent combines discrete low-pressure PVD (sputtering) and CVD (plasma deposition) stations inside one closed-system machine. If this patented design yields good operating machines, then I would be on the lookout for incorporation of PVD at the front end (back reflector layer) and back end (ITO layer) in the next-generation PV CVD machine. This patent also has a design for a much wider microwave applicator for CVD that may deposit, once empirically tuned, on substrates 120 cm or wider, compared to ~35cm on the PV line, which fits the width needs of the window/glazing industry but could allow wider substrate lines for other ECD products in the future. Al

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