Interconnection Die Multi-Stack Layout for Dense Compute Packaging
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Solution Overview
Problem
Existing microelectronics packaging technologies face challenges in efficiently connecting and integrating multiple computational components across different substrates, leading to limitations in computation density and interconnection complexity.
Innovation Solution
A multi-stack architecture is implemented using a shared interconnection die that supports multiple device regions, each comprising memory and processing devices, with interface logic embedded within the interconnection die to facilitate communication between device stacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple computational components are connected across different substrates to increase computation density, then computation capability is improved, but interconnection complexity and packaging difficulty increase
Solution Approach 1:
The system is divided into multiple independent device stacks, each containing computational components and memory devices. Each stack operates semi-independently with its own interface logic, allowing parallel processing while simplifying individual interconnection requirements. The interconnection die segments the overall system into manageable units that can be independently packaged and tested.
Solution Approach 2:
An interconnection die serves as an intermediary substrate that facilitates communication between multiple device stacks. This intermediary layer contains routing logic and interface circuits that manage data flow between stacks, reducing the complexity of direct peer-to-peer interconnections. The interconnection die acts as a mediator that handles the complexity of multi-stack communication while presenting simplified interfaces to each stack.
2Productivity
If multiple device stacks are integrated on a single substrate to increase computation density, then computation capability is improved, but thermal management and signal integrity deteriorate
Solution Approach 1:
Computational components are segmented into separate device stacks that are vertically distributed across multiple substrates. This spatial segmentation allows heat to be dispersed across multiple thermal zones rather than concentrated on a single substrate, improving thermal management. Each stack can have its own thermal pathways and heat dissipation strategies.
Solution Approach 2:
The system transitions from a two-dimensional layout on a single substrate to a three-dimensional multi-stack architecture. By stacking devices vertically and connecting them through the interconnection die, the patent achieves higher computation density without proportionally increasing the footprint area. This dimensional transition also creates natural thermal separation between stacks, as heat can dissipate in multiple directions rather than being confined to a planar arrangement.
3Adaptability or versatility
If more external connections are provided for protected computational components, then adaptability is improved, but packaging complexity increases
Solution Approach 1:
The interconnection die provides universal interfaces that can accommodate multiple device stacks with different computational components and memory types. The same interconnection architecture and interface logic can handle various device configurations, reducing packaging complexity. The system is designed to be adaptable to different device compositions within each stack without requiring fundamentally different packaging approaches.
Solution Approach 2:
Interface logic and routing functionality are extracted from the individual device stacks and placed in the interconnection die. This extraction allows each stack to have simplified packaging requirements, as the complex interconnection and communication logic is handled by the shared interconnection substrate. The stacks can be packaged more simply knowing that the interconnection die will provide the necessary external connections and adaptability.
Data Source
AI summary
A method, system and devices are disclosed providing a first layer, the first layer including a first device region and a second device region, and a second layer including an interconnection die, the interconnection die including an interface logic. The first device region and the second device region are mounted on a first side of the interconnection die, and the first device region and the second device region are communicatively coupled to the interface logic.