Patent ID: 11950423
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 2:
3. The semiconductor device of claim 1, wherein:
the peripheral circuit area comprises a low-voltage transistor area including the plurality of planar channel transistors, and a high-voltage transistor area laterally adjacent the low-voltage transistor area and including the at least one recess channel transistor, the at least one recess channel transistor having an operation voltage greater than respective operation voltages of the plurality of planar channel transistors; and
the at least one recess channel transistor comprises a gate dielectric film on an inner wall of the recess trench, and the first or second gate electrode, the first or second gate electrode comprising a filling electrode portion on the gate dielectric film in the recess trench, and a protruding electrode portion integrally connected to the filling electrode portion and protruding from the top surface of the peripheral circuit substrate.