Method of forming an optical layer on a substrate
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United States of America Patent
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Issued Date -
Nov 21, 2002
app pub date -
May 20, 2002
filing date -
May 21, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of forming a substantially optically transmissive layer on a planar surface of a substrate comprises depositing layer(s) comprising at least one liquid precursor on the substrate. The deposited layers each have an inner side towards the planar surface and an outer side away from the planar surface. After depositing, contaminants are transported away from the inner side and along the outer side by positioning the substrate such that the planar surface faces downwards at a fixed angle. The fixed angle is made sufficient to achieve the transporting through the action of gravity. After the at least one liquid precursor is deposited and the transporting of contaminants step is performed, the liquid precursor layer(s) are heated. This method can be used to create useful optical features, such as switches.
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