Patent ID: 6501506
Filing Date: 2002-12-31
Classification: H01L,H04N

Abstract:
A solid image pick-up unit having a unit cell laid out in a matrix two dimensional shape, by having light receiving means, amplifying means for amplifying a signal detected by said light receiving means, selecting means for selecting a cell thereof and resetting means for resetting said light receiving means, on a semiconductor substrate, whereinsaid unit cell has at least two storage means for storing a signal corresponding to a light quantity received by said light receiving means; said semiconductor substrate is structured by a first conductive type and has difference detecting means for detecting a difference between signals stored in aid at least two storage means; said light receiving means is structured by a first diffusion layer area of a second conductive type opposite to said first conductive type; said at least two storage means are structured by a second diffusion layer area of the second conductive type; and a first diffusion layer area of said storage means is disposed at a position symmetrical with the center of said first diffusion layer area of said light receiving means.