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

Claim 16:
17. A method of programming in a nonvolatile memory device, the nonvolatile memory device comprising a cell region including a plurality of first metal pads and a peripheral region including a plurality of second metal pads and vertically connected to the cell region by the plurality of first metal pads and the plurality of second metal pads, the method comprising:
providing a memory block in the cell region, the memory block comprising a first sub block below a stopper layer and a second sub block above the stopper layer where the memory block includes a plurality of cell strings connected to a plurality of bit lines, each cell string comprising a plurality of memory cells connected in series and disposed in a vertical direction;
providing a plurality of intermediate switching transistors disposed in the stopper layer;
turning on, by a control circuit in the peripheral region, one or more intermediate switching transistors in a selected cell string in response to a first string selection transistor connected to a first bit line of the plurality of bit lines in the selected cell string being activated during a program operation; and
turning off, by the control circuit, the one or more intermediate switching transistors in an unselected cell string adjacent to the selected cell string in a first direction in response to a second string selection transistor connected to the first bit line in the unselected cell string being inactivated during the program operation.