Patent ID: 9112146
Filing Date: 2015-08-18
Classification: H01L

Abstract:
1. A resistance random access memory device, comprising: a first resistance change layer comprising a first material; a second resistance change layer provided on the first resistance change layer, the second resistance change layer comprising a second material different from the first material; an ion source layer provided on the second resistance change layer, the ion source layer comprising a metal, the metal being able to reversibly move within the first resistance change layer and within the second resistance change layer; and an inter-layer insulating film disposed around a stacked body comprising the first resistance change layer, the second resistance change layer, and the ion source layer, a width of the first resistance change layer being narrower than a width of the second resistance change layer as viewed from a first direction and a second direction intersecting the first direction, an air gap being provided between the first resistance change layer and the inter-layer insulating film, and the second resistance change layer being in contact with the inter-layer insulating film.