Patent ID: 6291811
Filing Date: 2001-09-18
Classification: H01L

Abstract:
A process for fabricating a solid state image sensing element, comprising the steps ofa) preparing a substrate;b) forming a photo-electric converting element in a first area of said substrate;b1) forming a photo-shield layer over said photo-electric converting element and defining an opening in which at least a part of said photo-electric converting element is exposed;c) covering said photo-shield layer with a first transparent layer formed of a first transparent material;d) forming a mask layer on said first transparent layer having an opening over a central sub-area of said first area;e) isotrophically etching said first transparent so as to form a first recess, wherein said first recess occupies a second area wider than said first area and is shaped independent of the configuration of said opening; andf) filing said first recess with a second transparent material larger in refractive index than said first transparent material so as to form a second transparent layer serving as a lens.