Crying over expensive RAM? Kioxia may have cracked the 3D RAM puzzle, paving the way for cheaper, faster memory — but it probably won't reach the market till the next decade

Kioxia 3D DRAM.

• Kioxia develops high-density 3D DRAM using stackable oxide-semiconductor transistors
• Eight-layer transistor stacks show reliable operation in laboratory demonstrations
• Oxide-semiconductor InGaZnO replaces silicon-nitride for vertical and horizontal transistor formation

Kioxia says it has developed highly stackable oxide-semiconductor channel transistors capable of supporting high-density 3D DRAM.