Method for manufacturing PDLC-based electro-optic modulator using spin coating
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United States of America Patent
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Mar 15, 2005
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N/A
app pub date -
Oct 14, 2003
filing date -
Oct 14, 2003
priority date (Note) -
Expired
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Abstract
Electro-optic structures are constructed by spin coating water based emulsions or solvent based sensor materials, preferably a solvent-based polymer dispersed liquid crystal (PDLC), onto a substrate under conditions of controlled solvent evaporation. In a particular process, the uniformity of the PDLC coating is achieved by 1) spin coating in a semi-sealed chamber, 2) 'converting' a square substrate into round substrate by using a fixture; 3) providing a controllable distance between the substrate and a spin coater top cover; and 4) providing a controllable solvent evaporation rate.
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