Patent ID: 9105515
Filing Date: 2015-08-11
Classification: H01L

Abstract:
1. A method of manufacturing a 3D non-volatile memory device, comprising: alternately depositing first material layers and second material layers on a substrate; forming vertical channel layers passing through the first material layers and the second material layers; forming a slit between the vertical channel layers by etching the first material layers and the second material layers; forming trenches by removing the second material layers exposed through the slit; sequentially forming a charge blocking layer, a diffusion barrier layer, and a barrier metal layer along a surface of the slit and along surfaces of the trenches; forming a conductive layer filling the trenches on the barrier metal layer; and etching the conductive layer, the barrier metal layer, and the diffusion barrier layer from the surface of the slit between each of the trenches, so that the conductive layer, the barrier metal layer, and the diffusion barrier layer formed in one of the trenches is separated from the conductive layer, the barrier metal layer, and the diffusion barrier layer formed in another one of the trenches.