Surface-Mount Component Electromagnetic Shielding for IC Links

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Solution Overview

Problem

Conventional electronic chips face challenges in effectively insulating integrated circuit links from electromagnetic disturbances due to limited insulation possibilities, which complicates the production process and increases costs.

Innovation Solution

An electronic chip design featuring a surface-mount component with metal layers facing the links and an insulating layer in between, eliminating the need for a metal plate for insulation and enhancing stability during resin injection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a metal plate is used to insulate links from electromagnetic disturbances, then electromagnetic shielding is improved, but device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improveelectromagnetic disturbanceVSAvoidstructure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent removes the metal plate from the structure entirely and replaces it with surface-mount components (capacitors or inductors) that provide electromagnetic shielding through their electrical properties rather than physical barrier. This extracts the harmful metal plate while maintaining the shielding function through alternative electromagnetic components.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention changes the approach from physical blocking (metal plate) to electrical parameter-based shielding (impedance, capacitance, or inductance of surface-mount components). By altering the shielding mechanism from mechanical to electrical parameter control, the device complexity is reduced while maintaining effectiveness.

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If a metal plate is used for insulation, then electromagnetic shielding is achieved, but manufacturing precision and stability during resin injection deteriorate

Engineering Contradiction:

Improveelectromagnetic disturbanceVSAvoidstability during resin injection

Core Design Contradiction:

Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The patent replaces the durable metal plate with surface-mount components that are designed to be mounted and replaced during manufacturing. These components (capacitors, inductors) are standard electronic components that can be easily handled, positioned, and secured during resin injection without compromising manufacturing precision.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The invention substitutes the mechanical metal plate structure with electrical components that achieve the same electromagnetic shielding function through their electrical properties. This replacement improves manufacturing precision because surface-mount components are smaller, more stable, and better suited for precise placement during automated assembly and resin injection processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Object-affected harmful factors

If a metal plate is used for insulation, then electromagnetic shielding is provided, but production cost and process complexity increase

Engineering Contradiction:

Improveelectromagnetic disturbanceVSAvoidproduction process simplicity

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent uses surface-mount components (capacitors or inductors) that serve dual functions: they provide electromagnetic shielding and also function as standard electronic components for signal coupling or filtering. This multi-functionality eliminates the need for separate metal plates, simplifying the production process and reducing component count.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges the electromagnetic shielding function with the functionality of standard surface-mount electronic components. Instead of adding a separate metal plate for shielding, the shielding function is integrated into the existing capacitor or inductor components, thereby simplifying the manufacturing process and reducing overall device complexity.

Inventive Principle:

Principle #5Merging (Combining)

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 design effectively insulates links without a metal plate, simplifying production, reducing costs, and providing enhanced stability and pressure distribution, thereby effectively limiting electromagnetic disturbances.

Implementation Method 1

The component comprises a first metal surface layer facing the first link, a second metal surface layer facing the second link and an insulating layer placed between the first metal surface layer and the second metal surface layer

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS20220181316A1Electronic chips with surface mount component

Publication Date: 2022.06.09 STMICROELECTRONICS FRANCE

AI summary

Electronic chip comprising a first integrated circuit, a second integrated circuit, a first link connecting the first integrated circuit and the second integrated circuit, a second link connecting the first integrated circuit and the second integrated circuit, a surface-mount component, the component being configured and placed to limit an electromagnetic disturbance by the first link of the second link.