Patent ID: 7042035

Claim:
A re-writeable cross point memory, comprising: a substrate having a deposition face, the substrate including active circuitry having multiple layers of conductive paths, and the active circuitry and the multiple layers of conductive paths are able to withstand high temperature processing at a first temperature; and a two-terminal cross point memory array positioned over the deposition face and over the active circuitry and including a plurality of two-terminal memory cells, wherein at least a portion of the two-terminal memory cells are formed using high temperature processing at the first temperature, a bottom refractory metal layer that has a melting point above the first temperature, the bottom refractory metal layer positioned parallel to the deposition face of the substrate and is patterned into bottom conductive array lines, and a top metal layer that is not stable at the first temperature and postioned parallel to the deposition face of the substrate, patterned into top conductive array lines such that each two-terminal memory cell may be at least partially defined by the intersection of a bottom conductive array line and a top conductive array line, the two-terminal memory cell capable of being programmed by application of voltages on the bottom conductive array line and the top conductive array line.