Patent ID: 9466375
Filing Date: 2016-10-11
CPC Classification: G11C

Claim Text:
1. A programming method for a memory device, wherein a memory array in the memory device comprises a first memory cell string and a second memory cell string, and the programming method comprises: transmitting a first voltage from a common source line to first ends of the first memory cell string and the second memory cell string and floating second ends of the first memory cell string and the second memory cell string during a first period, wherein the common source line is located at a first side of the memory array, and channel voltages of the first memory cell string and the second memory cell string are increased in response to the first voltage from the common source line which is simultaneously conducted to the first memory cell string and the second memory cell string; and during a second period, selecting one of the first memory cell string and the second memory cell string each having the increased channel voltage to be programmed by floating the first ends of the first memory cell string and the second memory cell strings, respectively transmitting a second voltage and a third voltage to the second ends of the first memory cell string and the second memory cell string, and applying a programming voltage and a plurality of passing voltages.