VLSI Technology Symposium – Imec Alternate 3D NAND Word Line Materials

VLSI Technology Symposium – Imec Alternate 3D NAND Word Line Materials
by Scotten Jones on 07-19-2021 at 6:00 am

T8 1 Arjun Page 08

At the 2021 VLSI Technology Symposium, Imec presented on Ruthenium (Ru) and Molybdenum (Mo) as alternate Word Line (WL) materials for 3D NAND Flash “First Demonstration of Ruthenium and Molybdenum Word lines Integrated into 40nm Pitch 3D NAND Memory Devices”. I had an opportunity to interview one of the authors: Maarten Rosmeulen.… Read More


Kioxia and Western Digital and the current Kioxia IPO/Sale rumors

Kioxia and Western Digital and the current Kioxia IPO/Sale rumors
by Scotten Jones on 04-06-2021 at 10:00 am

Slide2

There are a lot of articles out right now discussing a possible IPO for Kioxia or sale of the company with Western Digital (WD) and Micron Technology (MT) mentioned as possible acquirers. Kioxia and WD have a partnership for Flash Memory and on March 18th WD gave a presentation on the state of their partnership and what they see as their… Read More


Executive Interview: Casper van Oosten of Intermolecular, Inc.

Executive Interview: Casper van Oosten of Intermolecular, Inc.
by Daniel Nenni on 03-19-2021 at 6:00 am

Casper Van Oosten cut out 1

Casper van Oosten is the Business Field Head and Managing Director for Intermolecular, Inc., acquired by Merck KGaA, Darmstadt, Germany in 2019. Prior to this role, Casper worked in various roles on Eyrise™ Dynamic Liquid Crystal Window in Veldhoven, the Netherlands, at an affiliate of Merck KGaA, Darmstadt, Germany. Casper… Read More


Calculating the Maximum Density and Equivalent 2D Design Rule of 3D NAND Flash

Calculating the Maximum Density and Equivalent 2D Design Rule of 3D NAND Flash
by Fred Chen on 02-21-2021 at 10:00 am

3D NAND Flash unit cell

I recently posted an article [1] published in 2013 on the cost of 3D NAND Flash by Dr. Andrew Walker, which has since received over 10,000 views on LinkedIn. The highlight was the plot of cost vs. the number of layers showing a minimum cost for some layer number, dependent on the etch sidewall angle. In this article, the same underlying… Read More


Toshiba Cost Model for 3D NAND

Toshiba Cost Model for 3D NAND
by Fred Chen on 10-11-2020 at 8:00 am

Toshiba Cost Model for 3D NAND

Toshiba (now known as Kioxia) was the first company to propose a 3D stacked version of NAND Flash memory called BICS [1]. BICS (BICost Scalable) Flash used explicit process cost reduction based on depositing and etching multiple layers at once, avoiding multiple lithography steps. This strategy replaced the usual approach… Read More


Application-Specific Lithography: 20nm Flash, 3D XPoint, 3D NAND Bit Lines

Application-Specific Lithography: 20nm Flash, 3D XPoint, 3D NAND Bit Lines
by Fred Chen on 08-10-2020 at 6:00 am

Application Specific Lithography SemiWiki

Nonvolatile memory capacity reached 64 Gb levels when NAND Flash half-pitch reached 20 nm [1]. Having reached 14 nm [2], NAND Flash half-pitch is no longer being reduced, now that it has entered the 3D era. However, recently, 3D XPoint has found applications within the Optane platform [3]. The lithography for patterning 20 nm half-pitch… Read More


LithoVision – Economics in the 3D Era

LithoVision – Economics in the 3D Era
by Scotten Jones on 03-04-2020 at 6:00 am

Slide3

Each year on the Sunday before the SPIE Advanced Lithography Conference, Nikon holds their LithoVision event. This year I had the privilege of being invited to speak for the third consecutive year, unfortunately, the event had to be canceled due to concerns over the COVID-19 virus but by the time the event was canceled I had already… Read More


Webinar on coping with the complexities of 3D NAND design

Webinar on coping with the complexities of 3D NAND design
by Tom Simon on 12-03-2019 at 10:00 am

In order to beat Moore’s Law NAND Flash memories have moved from a planar topology to 3D construction. This allows for increased memory sized in much the same way a multistory building provides more building square footage on the same size building lot. Just like in building construction, adding a third dimension to the mix increases… Read More


Webinar – 3D NAND Memory Cell Optimization

Webinar – 3D NAND Memory Cell Optimization
by Tom Simon on 11-07-2019 at 10:00 am

Flash memory has become ubiquitous, so much so that it is easy to forget what life before it was like. Large scale non-volatile storage was limited spinning disks, which were bulky, power hungry and unreliable. With NAND Flash, we have become used to carrying many gigabytes around with us all the time in the form of cell phones, USB… Read More


Semicon West was sluggish with hopes of 2020 recovery

Semicon West was sluggish with hopes of 2020 recovery
by Robert Maire on 07-17-2019 at 6:00 am

Bouncing along a not too bad bottom
Given that we have followed the semiconductor industry through many down cycles, we can safely say that this one isn’t all that bad by comparison. Everyone, big & small, is still safely profitable and in relatively good shape. Though we are seeing the normal week long holiday shut downs

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