Patent ID: 11957071
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. A method of operation in a vertical variable resistance memory device having memory cells disposed in a vertical direction, each of the memory cells comprising a word line, a vertical gate electrode facing the word line in a horizontal direction, and a channel and a variable resistance pattern between the word line and the vertical gate electrode facing each other,
wherein the method comprises:
moving oxygen vacancies in the variable resistance pattern included in a selected memory cell among the memory cells in the horizontal direction to a portion of the variable resistance pattern proximate or distal to the channel to cause the selected memory cell to be set or reset, respectively, wherein the oxygen vacancies are moved due to an electric field in the horizontal direction generated by an electric potential difference between the word line included in the selected memory cell and the vertical gate electrode; and
determining a state of the selected memory cell by flowing a read current in the vertical direction through the variable resistance pattern included in the selected memory cell, the state comprising a set state and a reset state.