TREE DIMENTIONAL MEMORY DEVICE AND DRIVING METHOD THEREOF

摘要

PURPOSE: A three dimensional memory device and a driving method thereof are provided to reduce program disturbance by applying different well voltages to the wells of each layer in a program operation. CONSTITUTION: A three dimensional memory device(100) has a plurality of layers. One of the layers is selected. Wells(101,102) of the selected layer is biased to the first well voltage. A word line voltage is applied to the selected word line of the selected layer. The wells of the non-selected layers are biased to a second well voltage. The second well voltage is larger than the first well voltage. Each layer of the three dimensional memory device shares the word line.