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Optical Coatings / Thin Films

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Anti-Reflective Coating Technology

Anti-reflective (AR) coatings are thin films applied to surfaces to reduce their reflectivity through optical interference. An AR coating typically consists of a carefully constructed stack of thin layers with different refractive indices. The internal reflections of these layers interfere with each other leading to an overall reflectance lower than that of the bare substrate surface.

AR coatings are used in many applications today and have great potential for expansion into new markets in the future. While traditionally applied using expensive vacuum deposition methods, YTCA has developed new solution-based AR coatings utilizing sol-gel chemistry that offer some significant advantages.

The major advantage of sol-gel over other technologies is the ease of coating large areas with uniform thickness, using a simple process with relatively low capital investment. Substrates with lower thermal stability can also be used because heat resistance requirements are low for curing wet coatings.

Two common methods for applying sol-gel optical coatings are dip coating and spin coating.YTCA has extensively refined the AR coating deposition process using both dip and spin coating processes to yield coatings with good optical and mechanical performance to meet various display application needs.

YTC America's anti-reflective and anti-glare coatings can provide enhanced visibility for a variety of industrial and commercial applications.

© 2008 YTC America Inc.