Patent ID: 8293565
Filing Date: 2012-10-23
Classification: H01L

Abstract:
1. A manufacturing method for a solid-state imaging device, comprising: forming a transparent resin layer above a principal surface of a semiconductor substrate having a plurality of photodiode layers; arranging a grating mask having a first transmission region and a second transmission region so that the both regions are each positioned above the photodiode layers, the second transmission region having a higher transmittance of the light than the first transmission region and being spaced from the first transmission region; exposing the transparent resin layer to light through the grating mask; forming first resin patterns having a constant height and second resin patterns having a constant height by developing the transparent resin layer, the second resin patterns having a lower height than the first resin patterns and being spaced from the first resin patterns; forming first microlenses being convex upward and second microlenses being convex upward by thermally treating the first resin patterns and the second resin patterns, the second microlenses having a lower height than the first microlenses, and the second microlenses having an area in a section parallel to a surface of the semiconductor substrate smaller than the area of the first microlenses, respectively.