Patent ID: 7344949
Filing Date: 2008-03-18
Classification: H01L

Abstract:
1. A method of fabricating a non-volatile memory, comprising: defining an active region and an inactive region in a semiconductor substrate; forming trench isolation regions in the inactive region for increasing an area of the active region from an upper surface of a protrusion of the semiconductor substrate between the trench isolation regions to a side of the protrusion, wherein upper surfaces of the trench isolation regions are lower than an upper surface of the semiconductor substrate; forming a tunnel insulating layer on the protrusion of the semiconductor substrate, including the side of the protrusion; forming, sequentially, a storage layer, a blocking insulating layer, and a gate layer on the tunnel insulating layer; and rounding angular edges of the protrusion after increasing the area of the active region, wherein the edges formed between the trench isolation regions and the protrusions remain angular.