Patent ID: 8536561
Filing Date: 2013-09-17
Classification: H01L

Abstract:
1. An array of memory cells, comprising: a first electrically conductive line extending along a first direction; a plurality of trench-shaped programmable material structures over the first electrically conductive line; the trench-shaped programmable material structures extending along a second direction which intersects the first direction; the individual trench-shaped programmable material structures having openings defined therein, the trench-shaped programmable material structures being configured to reversibly retain conductive bridges within individual memory cells to transition the memory cells between low and high resistive states; ion source material comprised by the individual memory cells and being directly against the trench-shaped programmable material structures; second electrically conductive lines that extend into the openings defined by the trench-shaped programmable material structures; individual memory cells comprising regions of programmable material and ion source material directly between the first and second electrically conductive lines; and wherein the first and second electrically conductive lines, and the programmable material and ion source material between the first and second electrically conductive lines, together form a first level of the array; the level having a vertical arrangement from the first electrically conductive line to the second electrically conductive lines; and further comprising a second level over the first level; said second level having the same vertical arrangement as the first level.