Optical Matrix Interconnects for Scalable Integrated Circuit Assemblies
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Solution Overview
Problem
Existing matrix architectures for integrated circuits require a large number of high-speed serial interfaces, leading to high energy consumption, complexity, and bulkiness, which is not well-suited for complex processing operations and large-scale systems.
Innovation Solution
The integration of optical interconnections between integrated circuits in a matrix architecture, reducing the need for fast serial interfaces and enabling better resource utilization, with optical links broadcasting high-speed signals and combining outputs without significant speed or quality loss, and incorporating optical switches for redundancy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-speed serial electrical interfaces are used to interconnect integrated circuits in a matrix architecture, then data transmission speed is improved, but energy consumption increases significantly
Solution Approach 1:
The patent replaces electrical interconnection systems with optical interconnection systems. Specifically, optical fibers substitute for electrical traces and connectors, optical transmitters (lasers or LEDs) replace electrical signal sources, and optical receivers (photodetectors) replace electrical signal terminations. This substitution enables high-speed data transmission while significantly reducing energy consumption and eliminating electromagnetic interference between adjacent circuits in the matrix architecture.
2Productivity
If a large number of high-speed serial interfaces are implemented to support complex processing operations, then processing capability is improved, but device complexity increases
Solution Approach 1:
The patent segments the interconnection system into independent optical channels, where each integrated circuit in the matrix has dedicated optical inputs and outputs. This segmentation allows complex processing operations to be performed by multiple circuits simultaneously without requiring complex interface coordination, as each circuit communicates through its own optical channel. The matrix architecture with N rows and M columns naturally provides this segmentation, enabling scalable complexity management.
Solution Approach 2:
The patent introduces optical fibers as intermediary transmission media between integrated circuits. These optical intermediaries carry data signals without requiring direct electrical contact between circuits, simplifying the interface requirements. The optical medium acts as a buffer that decouples the timing and electrical characteristics of transmitting and receiving circuits, reducing the complexity of synchronization and signal integrity management.
3Adaptability or versatility
If numerous electrical interconnections and interfaces are used to connect integrated circuits, then system functionality is improved, but the surface area and mass of the system increase
Solution Approach 1:
The patent transitions from planar electrical interconnections to three-dimensional optical routing. Optical fibers can be routed through vertical channels, under substrates, or in layered configurations, utilizing the third dimension for signal routing. This dimensional transition allows matrix architectures to achieve high connectivity density without proportionally increasing the planar surface area, as optical paths can overlap or run parallel in vertical spaces that electrical traces cannot efficiently utilize.
4Speed
If high-speed serial electrical interfaces are used for interconnecting integrated circuits, then data transmission rate is improved, but the bulkiness of the system increases
Solution Approach 1:
The patent replaces bulky electrical connector assemblies with compact optical coupling structures. Electrical high-speed interfaces require substantial shielding, grounding, and connector hardware to maintain signal integrity, whereas optical interfaces use small-diameter fibers with minimal coupling components. This substitution dramatically reduces the volume required for interconnection hardware while maintaining or improving data transmission rates.
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 significantly reduces energy consumption and complexity, allows for more efficient use of resources, and facilitates the implementation of complex processing operations in a more compact and efficient manner.
Implementation Method 1
The system includes at least one optical interconnection to connect an input of a row of the system to a respective input of the input integrated circuits of the sets belonging to said row, or to connect a respective output of the output integrated circuits of the sets belonging to a column of the system to the system output of said column
Data Source
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AI summary
The system has an optical interconnection (IO) for connecting an input of a row of the system to a respective input of integrated circuits (CI-1,1) of a set of assemblies belonging to the row. The optical interconnection is utilized for connecting a respective output of the integrated circuits of the set of assemblies belonging to a column of the system to an output of the column. The integrated circuits are interconnected according to matrix architecture. An independent claim is also included for a method for interconnecting an integrated circuit assembly.