Abstract:
PURPOSE: A NAND flash memory array having a star structure with a vertically stacked SSL, and a fabrication method thereof are provided to improve the compatibility for a peripheral circuit by using a NAND operation method. CONSTITUTION: Active lines(100) have a predetermined length toward a first direction. The active lines are separated from each other toward a second and a third direction. Word lines(WLs,200) are separated from each other toward the first direction. An insulating layer includes a charge storage layer. A ground selection line(400) is formed between insulating layers.