Patent ID: 11901008
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A three-dimensional (3D) flash memory to which a small block is applied, the 3D flash memory comprising:
a plurality of memory cell strings formed on a substrate to each extend in one direction, each memory cell string comprising a channel layer and a charge storage layer surrounding the channel layer;
a plurality of word lines connected to the plurality of memory cell strings and stacked in a vertical direction, the plurality of word lines being grouped into a plurality of word line sets, the plurality of word line sets respectively corresponding to a plurality of small blocks into which vertical-direction memory regions of the at least one memory cell string are grouped; and
at least one switching element connected to a word line wiring configured to control word line sets of the plurality of word lines, the word line wiring and at least one switching element being configured to selectively apply a voltage to any one word line set of the plurality of word line sets.