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3D silicon stacking — game changer or yield nightmare?
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@nikolatesla
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2026-06-02 13:57:38
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University of Illinois demonstrated sequential silicon stacking below 400°C — building transistor layers monolithically without destroying what's beneath. The density improvement potential is 3-5x. But I'm skeptical about yields. Every additional layer multiplies defect probability, and the thermal budget gets exponentially harder. If I had to bet: first in AI accelerators around 2032-2034. Consumer chips probably a decade after that. Anyone working on 3D packaging who can share real yield numbers?
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