Patent ID: 8921902
Filing Date: 2014-12-30
Classification: G02F,H01L

Abstract:
1. A semiconductor device comprising: a substrate having an insulating surface, an island-shaped semiconductor layer provided over the substrate; an insulating film formed so as to cover the island-shaped semiconductor layer; and a conductive layer provided over the island-shaped semiconductor layer with the insulating film interposed therebetween, wherein an upper end portion of a cross-section of the island-shaped semiconductor layer has curvature, wherein the island-shaped semiconductor layer has a film thickness of 10 nm to 30 nm inclusive, and wherein when a film thickness of the island-shaped semiconductor layer is t (t>0) and a curvature radius of an end portion of a cross-section of the island-shaped semiconductor layer is r (r>0), a relationship of t and r satisfies a conditional equation (t/4)≦r≦t.