Cantilevered Molding for IC Package Height Reduction
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Solution Overview
Problem
The challenge in integrated circuit packaging is to reduce the height of stacked modules while maintaining reliability and manufacturing efficiency, as existing methods often result in larger package dimensions due to spacing requirements for electrical connections, leading to potential damage and inefficiencies.
Innovation Solution
A module substrate with predetermined dimensions is used, where a module die is attached adjacent to the substrate, and a module molding material is applied cantilevered from the substrate over the die, providing structural integrity and reducing the overall package height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical connectors are exposed to enable connections, then electrical connectivity is achieved, but reliability deteriorates due to damage from close spacing
Solution Approach 1:
The patent introduces an intermediary structure (the module substrate with integrated connector housing) that mediates between the electrical connectors and the external environment. The substrate acts as a protective intermediary that provides structural support and spatial separation, allowing connectors to be electrically accessible while physically protected from damage during assembly operations.
Solution Approach 2:
The patent applies preliminary action by pre-attaching the electrical connectors to the module substrate in a protected state before final assembly. The connectors are positioned and secured to the substrate in advance, allowing for proper spacing and protection to be established before the module undergoes subsequent assembly operations that could otherwise cause damage.
2Reliability
If spacers are inserted to protect electrical connectors, then reliability improves, but package dimensions increase and usable area is reduced
Solution Approach 1:
The patent merges the protective function with the structural substrate itself. Instead of adding separate spacer components, the module substrate is designed to integrate both structural support and connector protection functions. The substrate's geometry and material properties are optimized to provide the necessary protection while maintaining compact dimensions and maximizing usable package area.
Solution Approach 2:
The module substrate serves multiple functions simultaneously: it provides mechanical support for the module die, houses and protects the electrical connectors, establishes proper spacing, and maintains compact package dimensions. This multi-functional design eliminates the need for dedicated spacer components, thereby preserving usable package area while ensuring connector protection.
3Adaptability or versatility
If multiple integrated circuits are combined within a single package, then functionality increases, but package height increases due to spacing requirements
Solution Approach 1:
The patent transitions from a vertical stacking arrangement (z-dimension) to a lateral arrangement (x-y plane) of multiple integrated circuits on the module substrate. By laying out multiple die side-by-side rather than stacking them vertically, the design achieves enhanced functionality through multiple circuits while maintaining compact package height, effectively moving the problem solution to another spatial dimension.
Data Source
AI summary
An integrated circuit package system includes: providing a module substrate having dimension predetermined for attachment adjacent a device; attaching a module die adjacent the module substrate; and applying a module molding material cantilevered from the module substrate and over the module die.