Patent ID: 7663164
Filing Date: 2010-02-16
Classification: H01L,Y10S

Abstract:
1. A semiconductor device with a protection diode comprising: a well region of a first conductivity type on a semiconductor substrate; at least one trench isolation structure in said well region and extending above a surface of said well region; a first heavily doped region of a second conductivity type in said well region and including a peripheral region adjacent said trench isolation structure; a second heavily doped region of said first conductivity type in said well region and separated from said first heavily doped region by said trench isolation structure; a third heavily doped region of said first conductivity type in said well region and interposed between said peripheral region of said first heavily doped region and said trench isolation structure; and a silicide resistant block-out structure covering said trench isolation structure and extending laterally to said peripheral region of said first heavily doped region thereby completely covering said third heavily doped region.