Patent ID: 7547905
Filing Date: 2009-06-16
Classification: H01L

Abstract:
1. A memory cell, comprising: a first insulating layer having a cell body via; a memory cell body comprising a chalcogenide glass electrolyte having at least one of silver, copper and zinc ions diffused therein, the memory cell body being contained within the cell body via and defining a sidewall where the memory cell body and the first insulating layer make contact; a first electrode in contact with the memory cell body; a second insulating layer over the first insulating layer and defining an electrode via to the memory cell body; a second electrode in contact with a top surface of the memory cell body and formed in the electrode via; wherein the electrode via has a width about the same as a width of the memory cell body, and the electrode via is lined with a spacer that covers a sidewall edge of the memory cell body, such that the second electrode contacts the top surface of the memory cell body without contacting the sidewall of the memory cell body.