Patent ID: 11901021
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 17:
18. The method of claim 12, wherein:
the plurality of memory cells are arranged as memory cell strings, wherein each memory cell string includes a group of vertically stacked memory cells of the plurality of memory cells and is connected at one end to a string select line included in the non-volatile memory device and at another end to a ground select line included in the non-volatile memory device, and wherein each memory cell is connected to a word line of the plurality of word lines;
the first verify operation further includes generating a first pre-charge voltage by the voltage generator and successively providing the first pre-charge voltage to each memory cell in a memory cell string including the at least one selected memory cell, beginning at either a word line adjacent to a string select line connected to the memory cell string or a word line adjacent to the ground select line connected to the memory cell string, and
the second verify operation further includes generating a second pre-charge voltage by the voltage generator, wherein the second pre-charge voltage has a lower voltage level than the first pre-charge voltage, and successively providing the second pre-charge voltage to each memory cell in the memory cell string including the at least one selected memory cell, beginning at whichever of the word line adjacent to the string select line connected to the memory cell string or the word line adjacent to the ground select line connected to the memory cell string that the first pre-charge voltage was not initially provided to.