Patent ID: 9666796
Date: 2017-05-30
CPC Classifications: H01L

Claim:
1. A method for making phase change memory cell, the method comprising providing a substrate; locating a plurality of sacrifice columns on the substrate; providing a carbon nanotube thread having a free end fixed on the substrate; forming a plurality of carbon nanotube wires by bending the carbon nanotube thread about each sacrifice column of the plurality of sacrifice columns to create a bending portion, one by one and cutting the carbon nanotube thread; wherein each of the plurality of carbon nanotube wire comprises a first end, a second end opposite to the first end, and the bending portion between the first end and the second end; and the bending portion is adjacent to one of the plurality of sacrifice columns; removing the plurality of sacrifice columns; applying a first electrode electrically connected to the first end, a second electrode electrically connected to the second end, and a third electrode, wherein the first electrode and the second electrode are spaced from each other, and the third electrode is spaced from the plurality of bending portions; and depositing a phase change layer to cover each of the plurality of bending portions and electrically connect to the third electrode.