Patent ID: 11943926
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
a peripheral circuit structure including a first substrate and circuit elements on the first substrate;
a second substrate on the peripheral circuit structure;
a first horizontal conductive layer on the second substrate;
a second horizontal conductive layer on the first horizontal conductive layer;
a stack structure including a plurality of gate electrodes, stacked to be spaced apart from each other in a direction perpendicular to an upper surface of the second horizontal conductive layer, and a plurality of interlayer insulating layers stacked alternately with the plurality of gate electrodes;
a channel structure including a channel layer and penetrating through the first horizontal conductive layer, the second horizontal conductive layer, and the stack structure; and
a separation insulating layer penetrating through the first horizontal conductive layer, the second horizontal conductive layer, and the stack structure and extending in a first direction, the separation insulating layer including a first portion having a continuously decreasing width, and a second portion penetrating through the first and second horizontal conductive layers and having a width greater than a minimum width of the first portion, a sidewall of the second portion having a first slope from a bottom surface, the first slope intersecting a second slope which extends to a level of the first portion and the second portion intersecting, an intersection of the first slope and the second slope being less than 180 degrees.