Patent ID: 8063394
Filing Date: 2011-11-22
Classification: B82Y,G11C,H01L

Abstract:
1. An integrated circuit comprising a plurality of resistance changing memory cells, each memory cell comprising a first electrode, a second electrode and a resistance changing memory element arranged between the first electrode and the second electrode, wherein a front surface area of an end section of the first electrode facing the resistance changing memory element is smaller than a front surface area of an end section of the second electrode facing the resistance changing memory element, wherein the front surface area of the end section of the first electrode facing the resistance changing memory element has one of (1) a rounded shape, (2) a peak like shape or (3) a conical shape such that a cross-sectional area of the end section decreases towards the front surface of the end section of the first electrode facing the resistance changing memory element, and wherein all of the front surface area of the end section is in contact with the resistance changing memory element; and wherein the front surface area of the end section of the first electrode facing the resistance changing memory element has a conical shape such that a cross-sectional area of the end section decreases towards the front surface of the end section of the first electrode facing the resistance changing memory element, and wherein the resistance changing element and the second electrode respectively have a zig-zag like shape.