Patent ID: 9337418
Filing Date: 2016-05-10
CPC Classification: G11C,H01L

Claim Text:
1. A method of manufacturing an MRAM device, comprising: forming first and second patterns on a substrate, the first and second patterns being disposed alternately and repeatedly and contacting each other; forming a first capping layer on top surfaces of the first and second patterns; removing first portions of the first capping layer and a portion of the second patterns thereunder to form first openings exposing the substrate; forming source lines filling lower portions of the first openings, respectively; forming second capping layer patterns filling upper portions of the first openings, respectively; removing second portions of the first capping layer and a portion of the second patterns thereunder to form second openings exposing the substrate; and integrally forming contact plugs and pad layers sequentially stacked on the substrate to fill the second openings, respectively.