Samsung Leads with 900-layer NAND, the Millennium Era Starts Countdown

According to news from the South Korean semiconductor industry, Samsung Electronics has recently used "multi-chip interconnection" technology to combine two 450-layer chip cell wafers into one, successfully constructing a 900-layer V-NAND integrated system, becoming the first company in the world to achieve this technological milestone. Samsung confirmed that the prototype has passed the "normal cell action characteristics" verification, not staying at the theoretical stacking stage, but reaching the actual drive level.

In the current mass production market, SK Hynix leads with 321-layer 4D NAND. This year, Samsung is preparing for the mass production of the 10th generation V-NAND (over 400 layers), while at the same time breaking through 900 layers in the research and development phase. The large generation gap has attracted attention from the industry.

The core difficulty of this technological breakthrough lies in overcoming two major physical obstacles. As the number of stacking layers increases, the problem of wafer warpage deformation becomes increasingly serious. Samsung has resolved this by introducing a high-precision upper spindle design; small alignment deviations during the bonding process have been overcome by a new stacking correction technology developed by Samsung itself. The newly introduced bit lines and word lines simultaneously achieve the dual compression of power consumption and chip area.

In terms of strategic significance, Yangtze Memory Technologies is accelerating mass production of the 300-layer level with government support, and once achieved, it will exert price pressure on Korean manufacturers. Industry insiders point out that 900-layer NAND is not a simple three times of 300-layer, but a technological leap that completely changes the stacking process paradigm. It will convey a signal that Samsung's technological leadership remains solid to global customers and effectively compresses the price competition space of Chinese manufacturers.

Samsung has been continuously advancing process evolution since it pioneered commercial 3D V-NAND in 2013. The realization of the 900-layer prototype this time means that the era of thousand-layer NAND has entered the countdown.