Semiconductor Die Interconnect for Packaging Substrate Integration
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Solution Overview
Problem
Conventional microelectronics packaging requires external components such as impedance matching elements and decoupling capacitors, which increase package height and area, and complicate routing and testing, necessitating the integration of these components within the package.
Innovation Solution
A semiconductor die-based packaging interconnect is used to mount semiconductor dies on a packaging substrate, enabling direct communication between the system board and packaging substrate, reducing external component requirements and optimizing component placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external components are used in conventional packaging, then component functionality is achieved, but package area and height increase
Solution Approach 1:
The patent merges external components with the packaging substrate by integrating impedance matching elements, decoupling capacitors, and other peripherals directly into the packaging substrate layers. This consolidation eliminates the need for separate external components while maintaining all required functionalities, thereby reducing package area without compromising component performance
Solution Approach 2:
The patent embeds components within the multi-layer packaging substrate structure, nesting impedance matching elements, capacitors, and interconnects within internal layers and vias. This nested arrangement allows components to occupy space within the substrate volume rather than requiring additional external package area, effectively hiding components within the packaging structure itself
2Area of stationary object
If components are embedded within packaging substrate, then package area is reduced, but routing complexity increases
Solution Approach 1:
The patent segments the packaging substrate into multiple functional layers, with each layer dedicated to specific routing functions or component types. This layering approach organizes complex interconnects into manageable segments, reducing routing complexity by separating signal paths, power planes, and ground references into distinct layers rather than having them all in a single plane
Solution Approach 2:
The patent introduces intermediate routing layers and redistribution layers (RDLs) that act as mediators between embedded components and external connections. These intermediary layers simplify the routing architecture by providing dedicated pathways and transition points, making the overall routing scheme more manageable and less complex than direct point-to-point connections would require
3Reliability
If external components are mounted on packaging substrate, then component functionality is achieved, but testing difficulty increases
Solution Approach 1:
The patent incorporates dedicated test access points and intermediary test structures within the packaging substrate that provide direct access to embedded components. These intermediary test elements serve as measurement interfaces, allowing external testing equipment to probe and characterize embedded components without requiring physical access to the component terminals, thereby significantly reducing testing difficulty
Solution Approach 2:
The patent integrates self-test functionality and built-in self-diagnosis circuits within the packaging substrate that automatically monitor and report on the status of embedded components. This self-service approach enables components to be tested and characterized without external intervention, eliminating the need for complex external testing setups and reducing overall testing difficulty
Data Source
AI summary
An electronic system includes a system board and a packaging substrate mounted on the system board. One or more semiconductor dies are mounted on the packaging substrate and coupled to the system board. The system also includes one or more semiconductor die-based packaging interconnects between the system board and the packaging substrate. The semiconductor die-based packaging interconnect has a first face coupled to the system board and a second face coupled to the packaging substrate. Through silicon vias located in the semiconductor die-based packaging interconnect enable communication between the system board and the one or more semiconductor dies. The semiconductor die-based packaging interconnects may include passive devices, active devices, and/or circuitry. For example, the semiconductor die-based packaging interconnect may provide impedance matching, decoupling capacitance, and/or amplifiers for minimizing insertion loss.