Patent ID: 9019741
Filing Date: 2015-04-28
Classification: G11C,H01L

Abstract:
1. A one-time programmable memory unit, comprising a lower electrode, an upper electrode and a storage medium layer placed between the upper electrode and the lower electrode, characterized in that the storage medium layer comprises: a first metal oxide layer which is formed by oxidizing a first metal layer or a first metal compound layer; and a second metal oxide layer which is formed by oxidizing a second metal layer or a second metal compound layer; wherein the first metal layer or the first metal compound layer and the second metal layer or the second metal compound layer are substantially located in the same layer and adjoin with each other, and the lower electrode is composed of the first metal oxide layer or the first metal compound layer and the second metal oxide layer or the second metal compound layer; an adjoining area for programming is formed between the first metal oxide layer and the second metal oxide layer.