Patent ID: 11925023
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A three-dimensional semiconductor device, comprising:
a first stacked structure on a substrate, the first stacked structure including first horizontal layers and first insulating layers alternately stacked on the substrate, and each of the first horizontal layers including a first pad at an end portion thereof; and
a second stacked structure on the first stacked structure, the second stacked structure including second horizontal layers and second insulating layers alternately stacked on the first stacked structure, and each of the second horizontal layers including a second pad at an end portion thereof,
wherein the first pads of the first horizontal layers form a first staircase of the first stacked structure in a first direction,
wherein the second pads of the second horizontal layers form a second staircase of the second stacked structure in the first direction, and
wherein the second pad of a lowermost one of the second horizontal layers extends farther than the first pad of an uppermost one of the first horizontal layers in the first direction.