NAND Flash Memory Revolution

NAND Flash memory became a standard semiconductor nonvolatile memory. Everyone in the world has widely used NAND Flash memory in many applications, such as digital camera, USB drive, portable music player, smartphone, and tablet-PC. The cloud data server started to use SSD (Solid State Drive) which was based on NAND Flash memory. Recently, 3-dimensional (3D) NAND flash memory was developed and started mass-production for reducing bit cost. By using 3D NAND flash memory, an advanced SSD has been intensively developed for high performance, and low power consumption, namely ecological environment. In this paper, NAND Flash memory technologies are discussed in the past, present and future.