Patent ID: 11948902
Assignee: SANDISK TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A bonded assembly, comprising:
a first semiconductor die comprising a first substrate, first semiconductor devices, and first bonding pads that are electrically connected to a respective node of the first semiconductor devices and laterally surrounded by a first pad-level dielectric layer, wherein the first pad-level dielectric layer comprises at least one first encapsulated airgap located between neighboring pairs of first bonding pads and encapsulated by a first dielectric fill material of the first pad-level dielectric layer; and
a second semiconductor die comprising a second substrate, second semiconductor devices, and second bonding pads that are electrically connected to a respective node of the second semiconductor devices and laterally surrounded by a second pad-level dielectric layer, wherein each of the second bonding pads is bonded to a respective one of the first bonding pads such that bonding interfaces between the first bonding pads and the second bonding pads are located within a horizontal plane,
wherein the first bonding pads are not in direct contact with the at least one first encapsulated airgap.