Patent ID: 11901017
Assignee: SK HYNIX INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A method of operating a semiconductor memory device configured to perform a program operation on selected memory cells, wherein the program operation comprises a plurality of program loops, each of the plurality of program loops comprising a program pulse application operation and a program verify operation, wherein the program verify operation comprises:
determining a verify voltage to be used in a verify operation among first to 2N−1-th verify voltages, wherein N is a natural number of 2 or more;
applying a determined verify voltage to a selected word line connected to the selected memory cells; and
applying a first read pass voltage or a second read pass voltage greater than the first read pass voltage to adjacent word lines that are adjacent to the selected word line among unselected word lines based on whether the determined verify voltage is the first verify voltage among the first to 2N−1-th verify voltages.