SK hynix Starts Mass Production of World's First 321-High NAND
SK hynix Inc. announced today that it has started mass production of the world's first triple level cell-based 321-high 4D NAND Flash with 1 Tb capacity. Following its previous record as the industry's first provider of the world's highest 238-layer NAND since June last year, SK hynix has become the world's first supplier of the NAND with more than 300 layers by finding a technological breakthrough for stacking. The company plans to provide the 321-high products to customers from the first half of next year.
Stacking more than 300 layers came into reality as the company successfully adopted the "3 plugs" process technology. Known for its excellent production efficiency, the process electrically connects three plugs through an optimized follow-up process after three times of plug processes are finished. For the process, SK hynix developed a low-stress material, while introducing the technology that automatically corrects alignments among the plugs.
Stacking more than 300 layers came into reality as the company successfully adopted the "3 plugs" process technology. Known for its excellent production efficiency, the process electrically connects three plugs through an optimized follow-up process after three times of plug processes are finished. For the process, SK hynix developed a low-stress material, while introducing the technology that automatically corrects alignments among the plugs.