Patent ID: 6166414
Filing Date: 2000-12-26
Classification: G02F,H01L

Abstract:
A semiconductor device comprising:a peripheral circuit provided over a substrate; andan active matrix circuit provided over said substrate,said peripheral circuit comprising:a first semiconductor layer provided over said substrate in said peripheral circuit and having a first channel region, a first lightly doped region and a first region being more conductive than said first lightly doped region; anda first gate electrode provided adjacent to said first channel region with a first gate insulating film therebetween,wherein said first lightly doped region has a region overlapping with said first gate electrode and has a region not overlapping with said first gate electrode, andwherein said first region being more conductive than said first lightly doped region is provided on an opposite side of said first lightly doped region to said first channel region, andsaid active matrix circuit comprising:a second semiconductor layer provided over said substrate in said active matrix circuit and having a second channel region, a second lightly doped region and a second region being more conductive than said second lightly doped region;a second gate electrode provided adjacent to said second channel region with a second gate insulating film therebetween; anda pixel electrode provided over said substrate and connected with said second region being more conductive than said second lightly doped region,wherein said second lightly doped region does not overlap with said second gate electrode.