SK hynix Develops World's Highest 238-Layer 4D NAND Flash

Rhea-AI Summary

SK hynix has developed the world's first 238-layer 512Gb TLC 4D NAND flash product, set to begin mass production in H1 2023. This innovation offers the highest layer count and the smallest footprint, enhancing productivity by 34% compared to its previous 176-layer product. The data transfer speed improves by 50% to 2.4Gb/s, with a 21% reduction in energy consumption. Initially aimed at client SSDs, future plans include a 1 Terabit version with double the density. This advancement positions SK hynix competitively in the NAND market.

Positive

• Achieved 238-layer NAND, highest in the industry.
• Productivity increased by 34% compared to previous generation.
• Data transfer speed improved by 50% to 2.4Gb/s.
• Energy consumption reduced by 21%, supporting ESG goals.
• Plans to introduce 1 Terabit version with double the density.

Negative

• None.

• World's first 238-layer 512Gb TLC 4D NAND developed in July; expected to begin mass production in the first half of 2023
• Providing highest, smallest NAND product while remarkably improving productivity, data transfer speed and power efficiency
• "Will continue innovations to find breakthroughs in technological challenges"

SEOUL, South Korea, Aug. 2, 2022 /PRNewswire/ -- SK hynix Inc. (or "the company", www.skhynix.com) announced today that it has developed the industry's highest 238-layer NAND Flash product.

The company has recently shipped samples of the 238-layer 512Gb triple level cell (TLC)* 4D NAND product to customers with a plan to start mass production in the first half of 2023. "The latest achievement follows development of the 176-layer NAND product in December 2020," the company stated. "It is notable that the latest 238-layer product is most layered and smallest in area at the same time."

* Triple Level Cell (TLC): NAND Flash products are categorized into Single Level Cell, Multi Level Cell, Triple Level Cell, Quadruple Level Cell and Penta Level Cell depending on the number of information (unit: bit) contained in a single cell. That a cell contains more information means more data can be stored within the same extent of area.

The company unveiled development of the latest product at the Flash Memory Summit 2022* in Santa Clara. "SK hynix secured global top-tier competitiveness in perspective of cost, performance and quality by introducing the 238-layer product based on its 4D NAND technologies," said Jungdal Choi, Head of NAND Development at SK hynix in his keynote speech during the event. "We will continue innovations to find breakthroughs in technological challenges."

* Flash Memory Summit (FMS): The world's biggest conference for NAND Flash industry taking place in Santa Clara every year. During its keynote speech at the event SK hynix made a joint announcement with Solidigm.

Since development of the 96-layer NAND product in 2018, SK hynix has introduced a series of 4D products that outperform existing 3D products. The company has applied charge trap flash* and peri under cell* technologies to make chips with 4D structures. 4D products have a smaller cell area per unit compared with 3D, leading to higher production efficiency.

* Charge Trap Flash (CTF): Unlike floating gate, which stores electric charges in conductors, CTF stores electric charges in insulators, which eliminates interference between cells, improving read and write performance while reducing cell area per unit compared to floating gate technology.

* Peri. Under Cell (PUC): A technology that maximizes production efficiency by placing peripheral circuits under the cell array.

The product, while achieving highest layers of 238, is the smallest NAND in size, meaning its overall productivity has increased by 34% compared with the 176-layer NAND, as more chips with higher density per unit area can be produced from each wafer.

The data-transfer speed of the 238-layer product is 2.4Gb per second, a 50% increase from the previous generation. The volume of the energy consumed for data reading has decreased by 21%, an achievement that also meets the company's ESG commitment.

The 238-layer products will be first adopted for client SSDs which are used as PC storage devices, before being provided for smartphones and high-capacity SSDs for servers later. The company will also introduce 238-layer products in 1 Terabit (Tb) next year, with density doubled compared to the current 512Gb product.

About SK hynix Inc.

SK hynix Inc., headquartered in Korea, is the world's top tier semiconductor supplier offering Dynamic Random Access Memory chips ("DRAM"), flash memory chips ("NAND flash") and CMOS Image Sensors ("CIS") for a wide range of distinguished customers globally. The Company's shares are traded on the Korea Exchange, and the Global Depository shares are listed on the Luxemburg Stock Exchange. Further information about SK hynix is available at www.skhynix.com, news.skhynix.com.

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SOURCE SK hynix Inc.

FAQ

What is SK hynix's latest NAND flash product announcement on August 2, 2022?

SK hynix announced the development of the world's first 238-layer 512Gb TLC 4D NAND flash product.

When is mass production expected for SK hynix's 238-layer NAND flash?

Mass production of the 238-layer NAND flash is expected to begin in the first half of 2023.

What improvements does SK hynix's 238-layer NAND offer over previous models?

The 238-layer NAND offers a 34% increase in productivity, a 50% increase in data transfer speed, and a 21% reduction in energy consumption.

How will SK hynix's new NAND flash products be applied?

The new NAND flash will first be adopted for client SSDs before expanding to smartphones and high-capacity SSDs for servers.

What is the significance of the 238-layer NAND flash technology?

It represents the industry's highest layer count, enhancing performance and efficiency in NAND flash storage.