Resistance changing device and method for fabricating the same
US8212232B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2010 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N70/8833
Abstract
A resistance changing device includes a resistive layer of a hetero structure interposed between a lower electrode and an upper electrode, and including a plurality of resistive material layers, each having a different resistivity, stacked therein, wherein resistivities of the resistive material layers decrease from the lower electrode toward the upper electrode. Since the resistive layer has a hetero structure in which a plurality of resistive material layers, each having a different resistivity, are stacked in such a manner that the resistivity decreases as it goes from the lower electrode to the upper electrode, it is possible to improve the distributions of the set/reset voltage and the set/reset current, while reducing a reset current of a resistance changing device at the same time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.