Key Takeaways:
Samsung Electronics has successfully developed a 900-layer V-NAND prototype, a technological leap that could re-establish its dominance in the fiercely competitive global memory market. The prototype, confirmed by the company, uses a novel bonding technique to create the highest layer count ever achieved, positioning Samsung to counter rivals and meet explosive demand from the artificial intelligence sector.
An industry source told South Korea's ETNews the achievement shows global customers that Samsung remains the technology leader. The development is critical as Samsung prepares its 10th-generation V-NAND (V10), with over 400 layers, for mass production to close the gap with SK Hynix, which currently leads the market with its 321-layer product.
Samsung’s 900-layer prototype relies on a "Cell Multi-Bonding" (CMB) technology, which bonds two separate 450-layer cell wafers into a single, functional unit. This approach marks a fundamental shift from the industry's traditional single-stacking method, where physical limits like wafer warpage become severe at higher layers. The company confirmed it solved these issues with a new high-precision "Upper Chuck" design and proprietary "Overlay Correction" technology to ensure perfect alignment.
This breakthrough arrives at a pivotal moment for the NAND flash market. AI infrastructure buildouts are driving unprecedented demand for high-capacity solid-state drives (SSDs), with TrendForce projecting prices to surge 85 to 90 percent in the first quarter of 2026 alone. Samsung’s ability to deliver a higher-density chip first could secure lucrative design wins for next-generation AI servers.
The move from single-stack etching to multi-wafer bonding is a significant evolution in NAND manufacturing. For years, producers have vertically stacked memory cells, with higher layer counts translating directly to more storage capacity per chip and better power efficiency. However, etching the microscopic channels through hundreds of layers in a single pass introduces stress that can physically bend the silicon wafer, destroying yields.
By manufacturing two more manageable 450-layer stacks and then bonding them, Samsung has created a viable path toward 1,000-layer NAND, which the company is targeting for 2030. The company verified normal cell operation in the 900-layer prototype, confirming the technology is functional beyond a theoretical demonstration.
While the 900-layer prototype gives Samsung a long-term roadmap, the immediate battle is for 10th-generation mass production. Japan's Kioxia has designated its 332-layer "BiCS10" NAND as a top priority for fiscal year 2026 (April 2026-March 2027). Meanwhile, SK Hynix aims for full production of its own 300-plus-layer chip in early 2027.
Samsung’s own 10th-generation V10 NAND, expected to feature around 430 layers, has seen its mass production timeline delayed. Originally targeted for 2025, large-scale investment is now not expected until at least the first half of 2026, according to industry sources. The delay is attributed to the steep technical challenges of etching ultra-high-layer stacks and a strategic focus on its HBM memory production, which commands higher margins for AI accelerators. This has created a window for competitors, even as Chinese firms like YMTC close the technology gap with nearly 300-layer products of their own.
The successful 900-layer test provides Samsung with a powerful marketing tool and a crucial technology hedge. It signals to the market that while its rivals are fighting for the 300-to-400-layer generation, Samsung is already building the foundation for the generation after next, potentially creating a higher technology barrier for competitors in the long run.
This article is for informational purposes only and does not constitute investment advice.
