A photo-detecting device includes: a semiconductor substrate; a multilayer structure formed on the semiconductor substrate; an island-like photo-detecting region formed in at least a portion of the multilayer structure, the island-like photo-detecting region having a central portion; and a light-shielding...http://www.google.com/patents/US6384459?utm_source=gb-gplus-sharePatent US6384459 - Semiconductor device and method for producing the same
