Multilayer Substrate Via Structure for Lower Current Path Resistance

The patent introduces columnar conductors extending vertically through insulating layers to connect conductive layers, adding a vertical dimension (Z-axis) to the current path. This three-dimensional conductor arrangement reduces path resistance by providing direct vertical connections instead of relying solely on lateral connections through conductive layers, thus resolving the contradiction between reducing energy loss and maintaining structural simplicity.

The patent embeds columnar conductors within through-holes of insulating layers, creating a nested structure where conductors are positioned inside insulating material. This nesting approach allows for efficient space utilization and direct electrical connections without significantly increasing overall device footprint or manufacturing complexity, thereby reducing resistance while maintaining reasonable structural complexity.

The patent divides the conductor system into multiple segments: conductive layers for lateral connections and columnar conductors for vertical connections. This segmentation allows each component to perform its specific function optimally, reducing overall path resistance. The segmented structure can be manufactured using standardized processes for each component type, balancing performance improvement with manufacturing feasibility.

By adding vertical columnar conductors through insulating layers, the patent creates three-dimensional current paths that reduce resistance. This dimensional addition is integrated into existing multilayer substrate manufacturing workflows, allowing for reduced power loss without requiring fundamentally new manufacturing approaches, thus managing the trade-off between performance and manufacturing complexity.