Method for forming inorganic lens array for solid state imager

Etching a substrate: processes – Forming or treating optical article – Lens

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216 38, 216 39, B44C 122

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active

058242368

ABSTRACT:
A method of making an imager including the steps of providing a semiconductor substrate; forming a plurality of spaced image pixels in the substrate; depositing a dielectric layer over the image pixels and making this layer optically planar by chemical mechanical polishing, thereby forming an optically flat surface. The method further includes forming a plurality of depressions in the optically flat surface; uniformly depositing a lens material on the optically flat surface, entirely filling the depressions; and forming the lens material.

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