| 摘要 |
PROBLEM TO BE SOLVED: To obtain an image of high picture quality which is made smaller in pixel size and free of color mixing and crosstalk. SOLUTION: In a solid-state imaging element, the potential level of a depleted low-density P-well 4 which is completely depleted is deeper than a ground level, and has a mountain-shaped curved line such that minority carriers can move toward an embedded type photodiode 1 or an N-type substrate 3 at a valley part of the potential level of the embedded photodiode 1, so that a small number of carriers into which incident light is photoelectrically converted quickly move toward the embedded type photodiode 1 or N-type substrate 3 because of the mountain-shaped curved line of the potential level. Consequently, the minority carriers are prevented from leaking out to an adjacent pixel portion. COPYRIGHT: (C)2010,JPO&INPIT
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