Patent ID: 7612811
Filing Date: 2009-11-03
Classification: H01L

Abstract:
1. A solid state imaging device, comprising: a color decomposer that decomposes incident light into a plurality of colors including at least a color of a first wavelength and a color of a second wavelength that is shorter than the first wavelength; a light shielding film that is formed under the color decomposer and comprises first openings through which light decomposed to the color of the first wavelength is transmitted and second openings through which light decomposed to the color of the second wavelength is transmitted, the second openings being formed to be smaller than the first openings, wherein sizes of the first and second openings are determined based on the wavelengths of the first and second colors transmitted therethrough; and a plurality of photo electric conversion regions that are arranged in lines and columns, each of the photo electric conversion regions generating signal electric charges corresponding to an amount of the incident light by receiving the incident light decomposed by the color decomposer and passed through the openings of the light shielding film, each of the photo electric conversion regions includes a high-sensitivity photodiode, a low-sensitivity photodiode, and a photodiode isolation region provided between the high-sensitivity photodiode and the low-sensitivity photodiode, wherein the second opening over the low-sensitivity photodiode is smaller than the first opening over the low-sensitivity photodiode, and wherein a conjunction depth of the low-sensitive photodiode is shallower than that of the high-sensitive photodiode.