Redundant Wiring Routes for Interdeck Coupling in Integrated Circuit Decks
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Solution Overview
Problem
In three-dimensional integrated circuit architectures, coupling circuitry from upper decks to lower decks is challenging due to misalignment risks, and finding suitable regions for forming openings to pass interconnects through tightly packed decks is difficult without disrupting signal transmission.
Innovation Solution
The implementation of connection regions with redundant wiring paths allows conductive lines to split into multiple components, enabling openings to be formed without breaking all signal paths, ensuring that at least one component remains to carry electrical signals across the connection region, thus facilitating interdeck coupling while accommodating potential misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If openings are formed through tightly packed decks to pass interconnects, then interdeck coupling is enabled, but it becomes difficult to find suitable regions without disrupting signal transmission
Solution Approach 1:
The conductive lines are divided into multiple separate components within the connection region. Instead of a single continuous wire, the signal path is segmented into multiple discrete conductive components that are spatially separated, allowing openings to be formed between them while maintaining signal transmission through alternative paths.
Solution Approach 2:
The conductive lines are pre-configured to split into multiple components before the opening is formed. This preliminary segmentation allows the opening to be created without disrupting signal transmission, as the redundant path structure is already in place to accommodate the opening.
2Reliability
If conductive lines are split into multiple components with redundant paths, then signal transmission reliability is improved, but device complexity increases
Solution Approach 1:
The redundancy and splitting of conductive lines is applied locally only in the connection region where openings are formed, rather than throughout the entire device. This localized approach provides the necessary reliability in critical areas while minimizing the overall increase in device complexity.
Solution Approach 2:
The conductive components are arranged in different spatial dimensions and orientations within the connection region. By utilizing three-dimensional spatial arrangement, the patent achieves redundant signal paths without significantly increasing planar footprint or overall device complexity.
3Productivity
If decks are stacked vertically to achieve high integration, then integration density is improved, but misalignment between decks becomes more problematic
Solution Approach 1:
The patent incorporates redundant conductive components and alternative signal paths before misalignment occurs. This preliminary redundancy acts as a cushion against potential misalignment issues, ensuring that even if decks are not perfectly aligned, signal transmission can still occur through the redundant paths.
Solution Approach 2:
The patent allows for variation in the spatial parameters and positions of the conductive components within the connection region. By designing the wiring structure to accommodate parameter variations, the system becomes more tolerant of manufacturing tolerances and deck misalignment while maintaining vertical stacking for high integration.
Data Source
AI summary
Some embodiments include an integrated assembly having a conductive line supported by a deck and extending along a longitudinal direction. The conductive line is configured to carry an electrical signal. A connection region is along the conductive line. The conductive line splits amongst multiple components as it passes through the connection region. The components are spread-apart from one another along a lateral direction which is orthogonal to the longitudinal direction. An opening extends vertically through the deck and through the connection region. The opening breaks one of the components of the conductive line to leave another of the components to carry the electrical signal across the connection region.