Patent ID: 11961564
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A nonvolatile memory device comprising:
a plurality of first metal pads in a cell region;
a plurality of second metal pads in a peripheral region under the cell region, wherein the peripheral region is vertically connected to the cell region by the first metal pads and the second metal pads;
a first memory block in the cell region, the first memory block being divided into a plurality of sub blocks and including a plurality of cell strings each comprising a plurality of memory cells connected in series and disposed in a vertical direction;
a plurality of intermediate switching transistors disposed in a boundary portion between two adjacent sub blocks in the first memory block in the vertical direction; and
a control circuit in the peripheral region, the control circuit being configured to selectively turn on one or more intermediate switching transistors in a selected cell string of the first memory block independently of intermediate switching transistors in unselected cell strings of the first memory block based on a program address during a program operation,
wherein the control circuit is configured such that when a selected word line corresponding to the program address is included in a first sub block below the boundary portion, the control circuit turns on the one or more intermediate switching transistors in the selected cell string and turns off intermediate switching transistors in the unselected cell strings.