| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase a charge amount which can be stored in a photodiode while making it possible to completely read charges stored in the photodiode. Ž<P>SOLUTION: The in-plane distribution F0 of the impurity concentration of an impurity diffused layer K0 is set so that the impurity concentration is the lowest at the center part and gradually becomes higher in the shape of a concentric circle from the center part of the impurity diffused layer K0 to the outer side. Thus, a potential distribution P0 within the horizontal plane of the photodiode 11 is flattened, and the potential is prevented from becoming deep at the center part of the impurity diffused layer K0. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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