How Does Monolithic 3D: Stacking Without Chiplets Work?

Monolithic 3D stacking is like building a skyscraper by adding floors one on top of another, but instead of moving people and things around, you just keep growing upward from the same starting point.

Imagine you're playing with lego blocks. Normally, you build your tower by putting each block on top of the last one. That’s how most 3D chips work, like building a regular lego tower.

But with monolithic 3D stacking, it's more like having a special kind of lego that lets you attach new floors right in the middle of the building, without tearing anything down. You're still using the same starting block, but now you can add new layers on top or even in between existing ones.

This means your skyscraper, or chip, gets taller and more powerful without needing to start over. It’s like having a growing tower that keeps getting better as it goes up, instead of just adding one floor at a time from the top.

Chiplet stacking is like building your skyscraper by bringing in complete new buildings, each one already finished, and attaching them on top. Monolithic 3D stacking is more like growing your tower from inside, using the same base all along.