Heterogeneous Interconnects with Non-Linear Pathways for Crosstalk Reduction
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Solution Overview
Problem
Conventional electrical interconnects in integrated circuit devices experience signal crosstalk due to close proximity, leading to signal integrity degradation, as they generate electromagnetic fields with the same orientation, which is frequency-dependent and costly, and causes mechanical instability, especially in fine pitch packages.
Innovation Solution
The use of interconnects with non-linear conductive pathways, such as helical or sinusoidal paths, that generate orthogonal electromagnetic fields to those of linear conductive pathways, reducing coupling between adjacent interconnects and minimizing crosstalk by employing a combination of magnetic-current-driven and electrical-current-driven interconnects with different field orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional linear conductive pathways are used, then manufacturing is simple and cost-effective, but signal crosstalk increases due to same-orientation electromagnetic fields
Solution Approach 1:
The patent applies asymmetry by using non-linear conductive pathways (such as sinusoidal or helical shapes) for some interconnects while maintaining linear pathways for others. This creates different electromagnetic field orientations between adjacent interconnects, reducing coupling and crosstalk. The asymmetric configuration allows signal pathways to generate orthogonal fields, making the coupling coefficient approach zero while remaining manufacturable.
Solution Approach 2:
The patent employs curved conductive pathways including sinusoidal and helical configurations. These curved paths transform the linear electromagnetic field generation into orthogonal field orientations, reducing interference between adjacent interconnects. The curvature introduces different spatial orientations of electromagnetic fields without significantly complicating the manufacturing process.
2Object-affected harmful factors
If non-linear conductive pathways are used, then signal crosstalk is reduced through orthogonal electromagnetic fields, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by implementing non-linear conductive pathways only in specific regions where crosstalk is most problematic, while maintaining linear pathways in other areas. This selective approach reduces overall device complexity while still achieving the benefit of orthogonal field orientations where needed most for signal integrity.
Solution Approach 2:
The patent makes the interconnect structure multi-functional by enabling it to serve both as a simple electrical conductor and as an electromagnetic field orientation controller. The same conductive pathway structure that carries the signal also generates the orthogonal electromagnetic fields needed for crosstalk reduction, eliminating the need for separate shielding or isolation structures.
3Ease of manufacture
If homogeneous interconnect structures are used, then manufacturing is simplified, but mechanical instability occurs in fine pitch packages
Solution Approach 1:
The patent uses asymmetric interconnect structures with varying conductive pathway configurations (linear, sinusoidal, helical) to distribute mechanical stresses differently across the package. This asymmetry prevents uniform stress concentration that occurs with homogeneous structures, improving mechanical stability in fine pitch packages while maintaining manufacturability through standardized fabrication processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces signal interference by making the coupling coefficient between orthogonal fields approach zero, enhancing signal integrity and compatibility with fine pitch packages while maintaining mechanical stability and reducing costs.
Implementation Method 1
interconnects with non-linear conductive pathways, such as helical or sinusoidal paths, that generate orthogonal electromagnetic fields to those of linear conductive pathways
Implementation Method 2
employing a combination of magnetic-current-driven and electrical-current-driven interconnects with different field orientations
Data Source
AI summary
Electrical interconnects having a non-linear conductive pathway, and related apparatuses and methods, are disclosed herein. In some embodiments, an electrical interconnect may include a non-linear conductive pathway electrically coupling top and bottom conductive portions. In some embodiments, an electrical interconnect may include a non-linear conductive pathway that propagates an electrical signal generating electromagnetic fields with an electrical field orthogonal to the direction of electromagnetic-wave propagation. In some embodiments, an electrical interconnect may include a non-linear conductive pathway portion and a linear conductive pathway portion. Also disclosed are connectors including an electrical interconnect having a non-linear conductive pathway. In some embodiments, a connector may include a first electrical interconnect having a non-linear conductive pathway generating first electromagnetic fields; and second electrical interconnect having a linear conductive pathway generating second electromagnetic fields that are orthogonal to the first electromagnetic fields.