3D Stacked Chip Signal Pad Layout for Low-Interference Transmission
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Solution Overview
Problem
In three-dimensional stacked chip systems, signal interference between misaligned or differently configured signal pads hinders effective signal transmission, necessitating a method to optimize signal pad configurations for reduced interference.
Innovation Solution
An electronic device with a processor and storage medium generates signal pad configurations based on frequency response curves calculated using parameter sets, including pad size, pad-pair pitch, and overlap area, using models like exponential decay to optimize signal transmission between signal pads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If signal pads are configured with different sizes or positions, then signal transmission flexibility is improved, but signal interference increases
Solution Approach 1:
The patent applies parameter changes by systematically varying pad size, pad-pair pitch, and overlap area to optimize signal transmission. Frequency response curves are generated for different parameter combinations to identify optimal configurations that balance flexibility with interference reduction.
Solution Approach 2:
The patent introduces the dimension of frequency response analysis to evaluate signal transmission quality. By analyzing frequency response characteristics across different pad configurations, the method transforms a two-dimensional pad layout problem into a multi-dimensional optimization problem involving frequency, spatial arrangement, and signal quality.
2Reliability
If pad size is increased, then signal transmission quality is improved, but chip area utilization deteriorates
Solution Approach 1:
The patent uses parameter changes to find the optimal pad size by generating frequency response curves for different pad dimensions. This allows identification of the minimum pad size required to achieve acceptable signal transmission quality, thereby optimizing chip area utilization.
Solution Approach 2:
The patent applies partial action by configuring pads with just sufficient size and spacing to achieve required signal quality, rather than using uniformly large pads throughout. This optimization ensures adequate signal transmission while minimizing unnecessary area consumption.
3Area of stationary object
If pad-pair pitch is reduced, then chip area is reduced, but signal interference between adjacent pads increases
Solution Approach 1:
The patent systematically varies pad-pair pitch as a parameter to optimize the balance between chip area and signal interference. Frequency response curves are generated for different pitch values to identify the minimum spacing that maintains acceptable signal quality.
Solution Approach 2:
The patent performs preliminary analysis by generating frequency response curves for various pad configurations before finalizing the design. This allows prediction of interference issues at different pitch values and enables selection of optimal spacing before manufacturing.
4Reliability
If overlap area between pads is increased, then signal alignment is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent uses parameter changes to optimize overlap area by analyzing frequency response characteristics for different overlap configurations. This identifies the minimum overlap area required to achieve sufficient signal alignment tolerance.
Solution Approach 2:
The patent employs feedback through frequency response analysis to evaluate the effectiveness of different overlap configurations. This allows iterative optimization of pad designs to achieve acceptable alignment tolerance while minimizing manufacturing difficulty.
Data Source
AI summary
A method and an electronic device for configuring signal pads between three-dimensional stacked chips are provided. The method includes: obtaining a plurality of frequency response curves corresponding to a plurality of parameter sets; obtaining an operating frequency; selecting a selected frequency response curve from the plurality of frequency response curves according to the operating frequency, where the selected frequency response curve corresponds to a selected parameter set among the plurality of parameter sets; generating, according to the selected parameter set, a signal pad configuration for configuring a first signal pad and a second signal pad on a surface of a chip; and outputting the signal pad configuration.