Patent ID: 6309905
Filing Date: 2001-10-30
Classification: H01L,Y02E

Abstract:
A method of fabricating a stripe photodiode element, for an image sensor cell, on a semiconductor substrate, featuring a lightly doped, narrow width, serpentine shaped, N type region, in a P well region, comprising the steps of:performing a first ion implantation procedure, to form said P well region, in said image sensor cell region, of said semiconductor substrate;forming a photoresist shape on said P well region;performing a second ion implantation procedure, to form said lightly doped, narrow width, serpentine shaped, N type region, in a first portion of said P well region, exposed in openings in said photoresist shape, creating said stripe photodiode element, comprised of said lightly doped, narrow width, serpentine shaped, N type region, in said first portion of said P well region;performing a third ion implantation procedure to form a heavily doped, P type contact region, in a second portion of said P well region; andperforming a fourth ion implantation procedure to form a heavily doped, N type contact region, in a portion of said lightly doped, narrow width, serpentine shaped, N type region.