Patent ID: 11973044
Assignee: SANDISK TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. An integrated memory assembly apparatus, comprising:
a memory die comprising:
a first non-volatile memory structure with a first staircase at an edge of the first non-volatile memory structure,
a second non-volatile memory structure with a second staircase at an edge of the second non-volatile memory structure, the edge of the first non-volatile memory structure is positioned adjacent to the edge of the second non-volatile memory structure with a gap between the edge of the first non-volatile memory structure and the edge of the second non-volatile memory structure such that the first staircase is adjacent the second staircase with the gap being between the first staircase and the second staircase,
a first top metal layer positioned above the first non-volatile memory structure and the second non-volatile memory structure,
a first bottom metal layer positioned below the first non-volatile memory structure and the second non-volatile memory structure,
a first metal interlayer segment positioned in the gap and connecting the first top metal layer to the first bottom metal layer, and
a first interface connected to the bottom metal layer; and

a control die bonded to the memory die, the control die comprising:
a second interface in electrical communication with the first interface,
a second top metal layer below the second interface,
a second middle metal layer below the second top metal layer,
a second bottom metal layer below the second middle metal layer, and
a plurality of electrical circuits below the second bottom metal layer;
a first electrical pathway exists from the first top metal layer through the first metal interlayer segment to the first bottom metal layer, to the second top metal layer via the first interface and the second interface, to the second top metal layer, to the second middle metal layer, along the second middle metal layer to one or more of the electrical circuits on the control die via the second bottom layer.