Patent ID: 9023710
Filing Date: 2015-05-05
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor memory device, the method comprising: providing a first insulating portion; forming an electrode layer that overlaps and directly contacts the first insulating portion; patterning the electrode layer to reduce a width of the electrode layer; forming a second insulating portion; forming an opening that penetrates through the second insulating portion and the electrode layer to form at least a first electrode; and forming a phase-change material element in the opening, wherein the first electrode contacts a first side surface of the phase-change material element, the first side surface of the phase-change material element being not parallel to a top surface of the first electrode, and wherein a bottom surface of the phase-change material element is at an angle with respect to the first side surface of the phase-change material element, is disposed between a top surface of the phase-change material element and a surface of the first insulating portion, and contacts the surface of the first insulating portion.