Patent ID: 7307326
Filing Date: 2007-12-11
Classification: H01L

Abstract:
1. A light receiving device for receiving light of a substantially single wavelength, comprising: a plurality of light receiving parts on a semiconductor layer; and a first light transmitting film and a second light transmitting film which are laminated at least on the plurality of light receiving parts and on parts between the plurality of light receiving parts in an order from a side closer to the light receiving parts, wherein both the first light transmitting film and the second light transmitting film are oxides, and the second light transmitting film is larger in thickness than the first light transmitting film, wherein each respective thickness is based on the wavelength of said light, wherein the first light transmitting film is a silicon oxide formed by thermal oxidation method, and the second light transmitting film is a silicon oxide formed by deposition method, and wherein an oxygen concentration in the second light transmitting film is lower than in the first light transmitting film.