Patent ID: 11910607
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. The device of claim 1, wherein
the source structure comprises a first source conductive pattern on the substrate and a second source conductive pattern on the first source conductive pattern,
the first source conductive pattern comprises:
a horizontal portion interposed between the substrate and the second source conductive pattern;
a first protruding portion extending from the horizontal portion and interposed between a portion of a side surface of the second source conductive pattern and a portion of an outer side surface of the vertical channel portion; and
a second protruding portion extending from the horizontal portion and interposed between a portion of the outer side surface of the vertical channel portion and a portion of a side surface of the substrate,
wherein the vertical channel portion is extended into the substrate.