Patent ID: 11955181
Assignee: SK HYNIX INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A method of operating a memory system that performs a first program operation and a second program operation on a memory block including a plurality of string groups respectively connected to a corresponding select line, among a plurality of select lines and wherein the memory block is connected to first to n-th word lines, the method comprising:
performing a first program operation on a memory cell connected to an i-th word line among memory cells included in a first string group and performing a second program operation on a memory cell connected to an (i−1)-th word line among the memory cells included in a first string group;
performing the first program operation on a memory cell connected to the i-th word line among memory cells included in a second string group and performing the second program operation on a memory cell connected to the (i−1)-th word line among the memory cells included in the second string group; and
performing a dummy program operation on a memory cell connected to an (i+1)-th word line among the memory cells included in the first string group,
wherein i is a natural number greater than 2.