Patent ID: 9165938
Filing Date: 2015-10-20
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a substrate having a cell region, wherein contact regions, a page buffer region, and a scribe lane region are defined around the cell region; a contact structure located in the contact region, including second conductive layers and second insulating layers which are alternately stacked, and having a stepped shape; a cell structure located in the cell region, including first conductive layers and first insulating layers which are alternately stacked, and having a different shape from the contact structure; a first dummy structure located in the page buffer region, including first sacrificial layers and third insulating layers which are alternately stacked, and having a different shape from the contact structure; and a second dummy structure located in the scribe lane region, including second sacrificial layers and fourth insulating layers which are alternately stacked, and having the stepped shape.