Featured Articles

Apple iPad Air 2 costs $275 to build

Apple iPad Air 2 costs $275 to build

IHS has told Recode that the Apple iPad Air 2 16GB Wifi costs only $275 to build -- not bad…

More...
LG sells 16.8 million smartphones in Q3 14

LG sells 16.8 million smartphones in Q3 14

As Samsung is losing market share, another Korean company, which many had written off, is gaining.

More...
LG G Watch R EU price set at €299

LG G Watch R EU price set at €299

LG G Watch R is probably the best looking Android Wear device on the market and many have been waiting for…

More...
Nvidia GTX 970 SLI tested

Nvidia GTX 970 SLI tested

Nvidia recently released two new graphics cards based on its latest Maxwell GPU architecture, with exceptional performance-per-watt. The Geforce GTX 970…

More...
Gainward GTX 970 Phantom previewed

Gainward GTX 970 Phantom previewed

Nvidia has released two new graphics cards based on its latest Maxwell GPU architecture. The Geforce GTX 970 and Geforce GTX…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Tuesday, 28 May 2013 10:19

Intel reveals 3D NAND plans

Written by Nick Farrell



It is coming right at ya

Keyvan Esfarjani, technology & manufacturing VP at Intel and co-CEO of IM Flash Technologies (IMFT) told the Imec Technology Forum some of Chipzilla’s plans behind its 3D NAND strategy. IMFT is a joint venture between Intel and Micron and its role is to find out how to move NAND flash memory ICs into the third dimension.

Already it thinks that its development of a 20nm memory cell has bought it a generation or two of 2D scaling. Currently an industry-wide transition for the nonvolatile NAND flash memory technology from memory cells in a 2D array to strings of NAND transistors integrated vertically. But 3D memories could be arranged as a 2D array of vertical semiconductor channels with many levels of gate-all-around (GAA) structures forming the multiple voltage level memory cell transistors.

Esfarjani said that there is a scaling limit for 2D NAND flash but 2D NAND flash can scale to two more nodes at about 15 and 10nm. The first 3D NAND generation is likely to be brought up alongside that 15nm 2D node. Esfarjani added. The 16 layer NAND flash ICs will not be enough to provide an economic benefit and there will need to be 64 or at least 32 layers for it all to work.

Planar floating-gate high-K metal gate cell introduced by IMFT at the 20nm node to replace a "wrap-around" cell used at 34 and 25nm would help to scale the idea further. IMFT introduced a 128Gbit NAND flash memory at the 20nm during 2012. Meanwhile the plan is to extend the 2D NAND flash generation by using nitride film and nanodots. Esfarjani pointed out that the transition to 3-D is not limited by lithography and it could manage on a 40nm diameter semiconductor channel.

The problem is finding materials that can handle the temperatures of multi-layer semiconductor processing and the high aspect ratio etch to drive in the vertical channel.

blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments