Patent ID: 11925015
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A vertical memory device comprising:
a plurality of cell gate lines spaced apart from one another in a vertical direction on a substrate;
a contact plug having an inner sidewall delimiting a recessed region and an outer sidewall facing the plurality of cell gate lines;
a buried film pattern in a lower portion of the recessed region, the buried film pattern being formed of a Si-containing material having a resistance greater than a resistance of the contact plug;
a contact overlying the buried film pattern, the contact comprising an inner contact portion disposed in the recessed region; and
a separation film pattern interposed between the plurality of cell gate lines and outer sidewall of the contact plug,
wherein a first length of the contact plug in the vertical direction is greater than a second length of the buried film pattern in the vertical direction.