3D NAND: Who Will Make It and When?

SK hynix 3D NAND Cross Section(The following is an update of a post that originally ran on 13 December 2013.  It was republished in 2024 as a part of a series on The Memory Guy blog to honor the 3D NAND inventors who have received the 2024 FMS Lifetime Achievement Award.)


This series, originally run in 2013, has looked at 3D NAND technology in a good deal of technical depth.  At that time, the last question to be answered centered around the players and the timing that the technology would Continue reading “3D NAND: Who Will Make It and When?”

What is a 3D NAND?

Applied Materials' Explanation of 3D NAND. A series of diagrams shows: 1) a horizontal NAND string, 2) That string being split into two, 3) The string being folded over at the split, and 4) the folded string being tilted on its end.(The following is an update of a post that originally ran 25 October 2013.  It was republished in 2024 as a part of a series to honor the 3D NAND inventors who have received the 2024 FMS Lifetime Achievement Award.)


In the prior post we discussed the need to go vertically into the body of the die, since NAND flash can not Continue reading “What is a 3D NAND?”

Why Do We Need 3D NAND?

NAND Flash Capped Gate Structure(The following is an update of a post that originally ran 18 October 2013.  It was republished in 2024 as a part of a series to honor the 3D NAND inventors who have received the 2024 FMS Lifetime Achievement Award.)


A memory chip of a certain area costs about the same amount to produce, no matter how many bits it holds. Naturally, the more bits you can cram onto this chip, the cheaper the price per bit will be. Low cost is of the utmost Continue reading “Why Do We Need 3D NAND?”

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