Brewer Science, Inc.

John W Arnold

Terry Lowell Brewer

Sumalee Punyakumleard

A light absorbing medium to be interposed under photosensitive layers, such as a photo-resist for integrated circuit 'chips' to eliminate defects caused by reflected light, has a polymer vehicle which can penetrate into small depressions of a substrate and form a thin, smooth and uniform coating. The coating includes a light absorbing dye. This light absorbing layer is imageable in the process. The light absorbing material eliminates many of the defects caused by reflected light resulting in increased sharpness of the images in the photo-resist. The material reduces the losses due to defects and increases the yield of useable product.

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Rolla, MO, United States of America

John W Arnold