Patent ID: 9721634
Date: 2017-08-01
CPC Classifications: G11C,H01L

Claim:
1. A magnetic tunnel junction (MTJ) memory bit cell in an integrated circuit (IC), comprising: an active semiconductor layer comprising an access transistor comprising a source node, a drain node, and a gate node; a drain contact disposed above the drain node and in contact with the drain node; a source contact disposed above the source node and in contact with the source node; a drain column comprising a drain plate disposed above the drain contact and in contact with the drain contact; an MTJ disposed above the active semiconductor layer in electrical contact with the drain column; a source plate comprising a metal line disposed in a first metal layer above the source contact and in contact with the source contact; and a source line disposed in a second metal layer above the first metal layer, the source line in electrical contact with the source plate to electrically connect the source line to the source node.