Patent ID: 7456469
Filing Date: 2008-11-25
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor silicon substrate; device separation portions provided at predetermined positions on said semiconductor silicon substrate; a cell transistor having a recess channel structure being provided at a first region at said semiconductor silicon substrate defined by said device separation portions; a peripheral transistor having an nMOSFET structure being provided at a second region at said semiconductor silicon substrate defined by said device separation portions; and a peripheral transistor having an pMOSFET structure being provided at a third region at said semiconductor silicon substrate defined by said device separation portions, (A) said cell transistor having the recess channel structure comprising: (B) said peripheral transistor having the nMOSFET structure provided at the second region, having: (C) said peripheral transistor having the pMOSFET structure provided at the third region, having: