Patent ID: 7449745
Filing Date: 2008-11-11
Classification: H01L

Abstract:
1. A semiconductor device comprising: plural peripheral circuit transistors each comprising, a semiconductor layer, a first insulating film formed on a peripheral circuit region of the semiconductor layer, a first electrode layer formed on the first insulating film, a second insulating film formed on the first electrode layer, the second insulating film including a first open portion exposing a surface of the first electrode layer, a second electrode layer formed on the second insulating film, and a third electrode layer formed above the second electrode layer and on the exposed surface of the first electrode layer, the third electrode layer being electrically connected to the first electrode layer via the first open portion; wherein a plurality of transistors comprises at least two numbers of the peripheral circuit transistors, gate lengths of the peripheral circuit transistors are different from each other, and the first open portions of the peripheral circuit transistors have substantially equal widths.