Patent ID: 9647033
Date: 2017-05-09
CPC Classifications: H01L

Claim:
1. A method of manufacturing a magnetic memory device, the method comprising: forming a lower magnetic layer, a tunnel barrier layer, and an upper magnetic layer on a substrate; forming a magnetic tunnel junction (MTJ) pattern by patterning the lower magnetic layer, the tunnel barrier layer, and the upper magnetic layer; forming a first insulating layer exposing an upper surface of the MTJ pattern; forming a polymer pattern on the exposed upper surface of the MTJ pattern; forming a second insulating layer exposing an upper surface of the polymer pattern; removing the polymer pattern to form a cavity in the second insulating layer, the cavity exposing the upper surface of the MTJ pattern; removing a portion of the second insulating layer such that an area of an uppermost portion of the cavity is greater than an area of a lowermost portion of the cavity, after the removing of the polymer pattern; and forming a metal line by filling the cavity with a conductive metal.