Patent ID: 9385314
Filing Date: 2016-07-05
CPC Classification: H01L

Claim Text:
1. A method for manufacturing a memory cell of a resistive random access memory, comprising: forming a first electrode; forming a metal oxide layer on the first electrode; forming an electrode buffer stacked layer on the metal oxide layer, wherein the electrode buffer stacked layer comprises a first buffer layer and a second buffer layer, the first buffer layer is located between the metal oxide layer and the second buffer layer, and the second buffer layer reacts with oxygen from the first buffer layer more strongly than the first buffer layer reacts with oxygen from the metal oxide layer; forming a second electrode on the electrode buffer stacked layer; and performing a heat treatment process after the second electrode is formed, wherein the heat treatment process comprises an annealing processing, a microwave heating processing, or an electricity-based oxygen ion migration processing, and a temperature of the heat treatment process is 200˜800 degrees Celsius.