Patent ID: 11876011
Assignee: MONOLITHIC 3D INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G  B | IPC G  H

Claim 7:
8. A 3D semiconductor device, the device comprising:
a first level comprising a first single crystal layer, said first level comprising first transistors,
wherein each of said first transistors comprises a single crystal channel;

first metal layers interconnecting at least said first transistors;
a second metal layer overlaying said first metal layers;
a first oxide layer disposed over said second metal layer;
a second oxide layer disposed over said first oxide layer; and
a second level comprising a second single crystal layer, said second level comprising second transistors,
wherein said second level overlays said first level,
wherein said first level comprises connections to a first external device,
wherein said first level comprises a first power line charged to a first voltage,
wherein said second level comprises a second power line charged to a second voltage,
wherein said second voltage is greater by at least 50% than said first voltage,
wherein said second level is directly bonded to said first level, and
wherein said bonded comprises direct oxide-to-oxide bonds.