Compartmentalized Shielding for Isolated Circuit Blocks
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Solution Overview
Problem
As electronic circuits become more miniaturized, there is a growing need for effective isolation between circuit blocks with high signal emissions and those susceptible to noisy environments, as traditional shielding methods require separate piece parts and do not adequately address the increased demand for isolation in highly integrated systems.
Innovation Solution
The method involves creating a module with multiple shielded compartments, each with a dedicated ground plane, where the shields are tied to their respective ground planes, and a conductive material is applied to form electromagnetic shields, with a cutout to electrically isolate these compartments, preventing current flow between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional shielding methods using separate piece parts are used, then shielding between circuit blocks is achieved, but device complexity increases and integration is reduced
Solution Approach 1:
The patent merges multiple separate shielding components into a single integrated conformal shield structure that is formed as one piece through electroplating. This single structure provides shielding for multiple circuit blocks simultaneously, eliminating the need for separate piece parts while maintaining shielding effectiveness between different circuit areas.
Solution Approach 2:
The conformal shield structure serves multiple functions simultaneously: it provides electromagnetic shielding for different circuit blocks, acts as a ground reference plane, and provides mechanical support. This multi-functional design reduces the overall number of components needed in the device.
2Volume of moving object
If circuit blocks are miniaturized to reduce product size, then overall device size is reduced, but isolation between high signal emission blocks and noisy environment susceptible blocks becomes insufficient
Solution Approach 1:
The conformal shield provides localized shielding properties tailored to specific circuit block requirements. Different regions of the conformal shield can be optimized for different shielding needs, with the shield conformally following the contours of individual circuit blocks to provide targeted electromagnetic isolation where needed most.
Solution Approach 2:
The conformal shield structure is nested within the overall device architecture, with the shield conformally fitting around and between miniaturized circuit blocks. This nested arrangement allows effective shielding to be achieved within the constrained space of miniaturized devices without adding significant external dimensions.
3Productivity
If more highly integrated circuits are used to reduce system size, then circuit density increases, but the need for isolation between functional circuit blocks in close proximity increases
Solution Approach 1:
The conformal shield effectively segments the electromagnetic environment into isolated zones around different circuit blocks. By conformally following the contours of each circuit block, the shield creates distinct electromagnetic compartments that prevent noise coupling between adjacent high-density circuit elements while maintaining their close physical proximity for integrated operation.
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 ensures that each shielded compartment remains isolated from others, reducing energy coupling and enhancing the integration of high signal and noisy circuit blocks within a smaller form factor, addressing the challenges of miniaturization and isolation in electronic modules.
Implementation Method 1
a conductive material is applied to form electromagnetic shields
Data Source
AI summary
Embodiments include devices and methods for manufacturing a module having a first shielded compartment and a second shielded compartment, wherein the first shielded compartment is electrically isolated from the second shielded compartment. Electrical conductivity is controlled in a manner in which current flow between shielded circuits is directed to reduce or eliminate energy from being coupled between one or more shielded compartments on the same module. Each module may have a plurality of individual shielded compartments, where each compartment has a dedicated ground plane. The shields for each compartment may be tied to the dedicated ground plane of the compartment. Because the dedicated ground planes are not tied together, each of the shielded compartments on the modules remains isolated from all the other shielded compartments on the modules. In some embodiments having a plurality of shielded compartments, there is at least one isolated shielded compartment depending upon the design needs of the module.