Interconnect Bridge Trace Layout for Similar Channel Timing
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Solution Overview
Problem
Existing electronic devices face performance limitations due to electrical signal transmission delays and differences in routing times between channels, which can lead to signal distortion, reduced data transfer rates, and interoperability issues caused by dissimilar contact patterns and the need for time delay circuits.
Innovation Solution
The introduction of an interconnect bridge with lithographically formed electrical routing traces that include trace deviations to alter capacitance or resistance, minimizing differences in routing times between channels and facilitating direct communication between dies with dissimilar contact patterns without the need for time delay circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If direct routing traces are used between interconnects, then the routing length is minimized, but the routing time differs between channels causing signal distortion
Solution Approach 1:
The patent applies local quality by introducing trace deviations in specific channels rather than uniformly changing all routing traces. The trace deviation is selectively applied to channels that require additional routing time, creating localized modifications that balance the overall signal timing across channels while maintaining direct routing in channels that already have appropriate timing.
Solution Approach 2:
The patent changes the geometric parameter of the routing trace by introducing deviations from the direct path. This parameter change increases the routing length and alters the capacitance or resistance of the affected channel, thereby adjusting the signal transmission time to match other channels and eliminate timing skew that causes signal distortion.
2Reliability
If trace deviations are added to equalize routing times, then signal integrity is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent incorporates trace deviations directly into the lithographic pattern design stage, allowing the routing trace geometry to be predefined with the necessary deviations. This preliminary action ensures that the trace deviations are integrated into the manufacturing process without requiring additional fabrication steps, thereby maintaining ease of manufacture while achieving signal integrity equalization.
3Reliability
If time delay circuits are used to equalize routing times, then signal distortion is reduced, but the device complexity and cost increase
Solution Approach 1:
The patent extracts the time delay function from separate circuit components and integrates it directly into the routing trace geometry itself. By embedding the timing equalization function within the trace deviation of the interconnect structure, the patent eliminates the need for discrete time delay circuits, thereby reducing device complexity and cost while maintaining signal timing accuracy.
Solution Approach 2:
The routing trace acts as an intermediary that performs dual functions: signal transmission and timing equalization. The trace deviation serves as a geometric mediator that adjusts the electrical characteristics (capacitance or resistance) of the channel to achieve timing synchronization without requiring additional active circuit components.
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 solution enhances the performance of electronic devices by ensuring similar routing times across channels, improving data transfer rates, and enabling seamless communication between components with different contact patterns, thereby reducing manufacturing costs and eliminating the requirement for time delay circuits.
Implementation Method 1
the routing trace deviation is configured to alter one or more of capacitance or resistance of the first electrical routing trace and correspondingly alter the first routing time
Implementation Method 2
the routing trace deviation is configured to alter one or more of capacitance or resistance of the first electrical routing trace and correspondingly alter the first routing time
Data Source
AI summary
An electronic device may include an interconnect bridge. The interconnect bridge may include a first electrical routing trace having a first routing length and a corresponding first transit time for a first electrical signal to transmit across the first routing length. The first electrical routing trace may transmit the first electrical signal along a major plane of the interconnect bridge between a first interconnect and a second interconnect. The interconnect bridge may include a routing trace deviation in communication with the first electrical routing trace. The routing trace deviation is outside a direct route between the first interconnect and the second interconnect. The routing trace deviation may alter one or more of capacitance or resistance of the first electrical routing trace and correspondingly alter the first routing time.