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3-Dimensional Terraced NAND (3D TNAND) Flash Memory-Stacked Version of Folded NAND Array

Yoon KIM, Seongjae CHO, Gil Sung LEE, Il Han PARK, Jong Duk LEE, Hyungcheol SHIN, Byung-Gook PARK

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Summary :

We propose a 3-dimensional terraced NAND flash memory. It has a vertical channel so it is possible to make a long enough channel in 1F2 size. And it has 3-dimensional structure whose channel is connected vertically along with two stairs. So we can obtain high density as in the stacked array structure, without silicon stacking process. We can make NAND flash memory with 3F2 cell size. Using SILVACO ATLAS simulation, we study terraced NAND flash memory characteristics such as program, erase, and read. Also, its fabrication method is proposed.

Publication
IEICE TRANSACTIONS on Electronics Vol.E92-C No.5 pp.653-658
Publication Date
2009/05/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E92.C.653
Type of Manuscript
Special Section PAPER (Special Section on Fundamentals and Applications of Advanced Semiconductor Devices)
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