A Survey of 3 D Nand Flash Memory

Nand flash memory is an important part of the electronics products. Over the years scientists and engineers have worked hard to make it faster and cost effective. Recently, there has been a realization that current technologies is not capable of further increasing their capacity and at the same time keep the cost down. Keeping in view this limit and the ever increasing need for Nand flash memory scientists and engineers have proposed 3D integration of Nand flash memory. 3D integration promises to be an excellent replacement of current technologies for the development of Nand flash memory. This paper surveys the 3D integration technologies and does a critical comparison among each of them. In the end their advantages and limitations have been discussed.