Patent ID: 11935593
Assignee: SANDISK TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A non-volatile storage device comprising:
a plurality of NAND strings of memory cells, each NAND string having a plurality of data memory cells coupled to a plurality of data word lines in series with a plurality of dummy memory cells connected to a plurality of dummy word lines; and
means for increasing resistance of one or more dummy memory cells of the plurality of dummy memory cells from a first resistance for program-verify steps directed to the plurality of data memory cells to a second resistance for subsequent read operations directed to the plurality of data memory cells by applying a first dummy word line voltage to control gates of the plurality of dummy memory cells for the program-verify steps, applying the first dummy word line voltage to control gates of the plurality of dummy memory cells for read operations directed to higher data word lines and applying a second dummy word line voltage to the control gates for read operations directed to lower data word lines of the plurality of data word lines, the second dummy word line voltage is lower than the first dummy word line voltage.