Patent ID: 9437639
Filing Date: 2016-09-06
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a supporting substrate; a semiconductor layer disposed over the support substrate and including a first main surface and a second main surface opposing the first main surface; a plurality of light receiving elements which are formed in the semiconductor layer and in each of which photoelectric conversion is performed; a light receiving lens disposed over the second main surface of the semiconductor layer to supply light to each of the light receiving elements; and a mark for alignment formed inside the semiconductor layer, wherein the mark for alignment extends from the first main surface toward the second main surface, wherein the mark for alignment includes a protruding portion formed so as to protrude from the second main surface in a direction toward where the light receiving lens is disposed, wherein a bottom surface of the mark is coplanar with the first main surface of the semiconductor layer, and wherein the mark is made of a same material as the semiconductor layer and is in direct contact with the semiconductor layer.