SK Hynix has announced it has started
delivering samples of its new 1TB Quadruple Level Cell (QLC) product to major
SSD Controller companies. SK Hynix has applied its own QLC technology to its
world’s first 96-Layer “CTF (Charge Trap Flash) based 4D (Four-Dimensional)
NAND Flash (or 4D NAND).”
QLC stores four bits of data in one NAND cell,
allowing higher density compared to TLC (Triple Level Cell) that stores three
bits per cell. Using QLC, it is possible to develop high-density products with
cost competitiveness. SK Hynix is able to secure the industry’s top-level cost
competitiveness through this product, which has reduced the area to less than
90% of the existing 3D-based QLC products.
