Patent ID: 6492677
Filing Date: 2002-12-10
Classification: H01L

Abstract:
A non-volatile semiconductor device, comprising:a semiconductor substrate carrying an active region defined by a device isolation structure thereon; a plurality of diffusion regions formed in said active region with a separation from each other, each of said plurality of diffusion regions extending in a first direction; a word line electrode extending over said active region in a second direction crossing said first direction; and a charge storable insulation film formed on said active region in correspondence to said word line electrode between a surface of said active region and said word line electrode, said charge storable insulation film having a stacked structure in which a nitride film and an oxide film are stacked consecutively on an oxide film, said device isolation structure having a plurality of openings each exposing said surface of said substrate in correspondence to an extension part of said plurality of diffusion regions, each of said plurality of diffusion regions having said extension part extending into corresponding one of said plurality of openings; each of said plurality of diffusion regions carrying a silicide film on a surface thereof.