Patent ID: 6949770
Filing Date: 2005-09-27
Classification: H01L

Abstract:
1. A photodiode array comprising a plurality of p-i-n photodiodes arrayed on a substrate, each photodiode comprising: a semi-insulative semiconductor substrate; an n-type semiconductor layer grown on the semi-insulative semiconductor substrate; an i-type semiconductor layer grown on the n-type semiconductor layer; a p-type semiconductor layer grown on the i-type semicondutor layer; an n-type electrode provided on the n-type semiconductor layer in a region exposed partially by removing the p-type semiconductor layer and the i-type semiconductor layer; and a p-type electrode provided on the p-type semiconductor layer; wherein a trench is provided between the two adjacent photodiodes by partially removing the p-type semiconductor layer, the i-type semiconductor layer, an the n-type semiconductor layer, and wherein the trench extends to the semi-insulative semiconductor substrate.