Circuit Module Shield with Protruded Section for Visual Inspection

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Solution Overview

Problem

Existing circuit modules with electromagnetic shields make it difficult to visually recognize the orientation and presence of inner shields, leading to challenges in identifying defective products during inspection.

Innovation Solution

A circuit module design featuring a sealing body with a trench filled with a conductive shielding material, where the outer shield section has a protruded or sagged second section that can be visually recognized, allowing for easier identification of the inner shield and enhancing heat dissipation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the sealing body is coated with a shield, then electromagnetic shielding performance is improved, but visual recognition of mount component positions and inner shield configuration becomes difficult

Engineering Contradiction:

Improveelectromagnetic interruptionVSAvoidvisual recognition of inner shield and mount component positions

Core Design Contradiction:

Object-affected harmful factorsVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies a visual indicator (different color or pattern) on the outer shield section to enable visual recognition of the inner shield's position and the mount component layout. This color change or pattern differentiation allows inspectors to visually identify the shield configuration without removing the shield coating, thereby resolving the contradiction between maintaining electromagnetic shielding and enabling visual inspection.

Inventive Principle:

Principle #32Color changes

2Object-affected harmful factors

If the trench is filled with conductive material to form inner shield, then electromagnetic shielding between mount components is improved, but inspection of inner shield formation becomes difficult

Engineering Contradiction:

Improveelectromagnetic interruption between mount componentsVSAvoidconfirmation of inner shield formation in inspection

Core Design Contradiction:

Object-affected harmful factorsVSDifficulty of detecting and measuring

Solution Approach 1:

The patent uses a visual indicator on the outer shield that corresponds to the inner shield configuration. This indicator allows inspection personnel to visually confirm whether the trench has been properly filled with conductive material to form the inner shield, without needing to remove or penetrate the shield structure. The color or pattern change provides direct visual feedback on the inner shield formation status.

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

The patent introduces a visual indicator as an intermediary element that mediates between the inner shield (which is hidden) and the inspection process. This indicator translates the invisible inner shield configuration into visible information, allowing inspectors to confirm inner shield formation without direct observation of the concealed structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If a flat shield surface is used, then manufacturing simplicity is maintained, but visual recognition and heat dissipation are insufficient

Engineering Contradiction:

Improveshield fabrication simplicityVSAvoidvisual recognition of circuit module direction

Core Design Contradiction:

Ease of manufactureVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies different colors or patterns to different sections of the shield surface to indicate the circuit module direction and mount component positions. This color differentiation maintains the relatively simple flat shield structure while adding visual information for easy recognition of orientation and configuration during inspection and assembly.

Inventive Principle:

Principle #32Color changes

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

Enables easy recognition of the circuit module's direction and presence of inner shields, reducing defective product identification issues and improving heat dissipation by increasing the shield's surface area.

Implementation Method 1

the trenches are filled with a conductive material to provide the shields between the mount components

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Implementation Method 2

improves heat dissipation by increasing the shield's surface area

Methodology Applied

Scientific EffectHeat dissipation: Convection

Data Source

PatentUS9456488B2Circuit module and method of producing circuit module

Publication Date: 2016.09.27 KAGA FEI CO LTD

AI summary

There is provided a circuit module including a circuit substrate having a mount surface; a mount component mounted on the mount surface; a sealing body formed on the mount surface, the sealing body covering the mount component and having a trench formed from a main surface of the sealing body to the mount surface; and a shield having an inner shield section formed within the trench and an outer shield section that covers the sealing body and the inner shield section, the outer shield section including a first section having a flat surface formed on the main surface of the shielding body and a second section formed on the inner shield section and protruded or sagged from the first section.