Electronic Component Module Lateral Heat Dissipation

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Solution Overview

Problem

Existing electronic component modules face challenges in effectively dissipating heat generated by heating elements, such as CPUs or power amplifiers, which can deteriorate electrical characteristics and are exacerbated by sealed resin layers, reduced module thickness, or the inability to mount a heat sink on the heating element.

Innovation Solution

The solution involves an electronic component module design that includes a board with a first electronic component as a heating element, a second electronic component with a heat transfer portion connected to both terminal electrodes, and a heat dissipation portion connected to the board via these electrodes, allowing for efficient heat transfer and dissipation without requiring a heat sink on the top surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a heat sink is provided on the top surface of a heating element, then heat dissipation is improved, but the module thickness increases and the device becomes more complex

Engineering Contradiction:
Improveheat dissipation efficiencyVSAvoidmodule thickness
Core Design Contradiction:
TemperatureVSLength of stationary object

Solution Approach 1:

The patent transitions from vertical heat dissipation (top-surface heat sink) to lateral heat dissipation (side-surface heat sink). The heat dissipation portion is positioned adjacent to the heating element in the planar direction rather than above it, utilizing the lateral dimension for heat transfer while maintaining thin profile in the vertical direction.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The heat dissipation portion serves multiple functions: it acts as both a thermal management component and an electromagnetic shield. By integrating the heat dissipation function with the shielding function, the patent reduces the need for separate components that would increase thickness and complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Temperature

If a heat sink is provided on the top surface of a heating element, then heat dissipation is improved, but the device structure becomes more complex

Engineering Contradiction:
Improveheat dissipation efficiencyVSAvoidstructure complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent combines the heat dissipation function with the electromagnetic shielding function into a single integrated component. The heat dissipation portion is formed as an integral part of the module structure, merging thermal management and EMI shielding functions that would traditionally require separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The heat dissipation portion serves multiple functions simultaneously: thermal conduction away from the heating element and electromagnetic shielding for sensitive components. This multi-functionality reduces the total component count and simplifies the overall device structure.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Length of stationary object

If the module thickness is reduced, then the device becomes more compact, but heat dissipation capability deteriorates

Engineering Contradiction:
Improvemodule thicknessVSAvoidheat dissipation capability
Core Design Contradiction:
Length of stationary objectVSTemperature

Solution Approach 1:

The patent compensates for reduced vertical heat dissipation capacity by enhancing lateral heat dissipation. The heat dissipation portion extends in the planar direction adjacent to the heating element, utilizing the horizontal dimension to maintain effective heat transfer despite reduced module thickness.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

4Productivity

If high-density component mounting is implemented, then productivity is improved, but heat dissipation becomes more difficult

Engineering Contradiction:
Improvecomponent mounting densityVSAvoidheat dissipation difficulty
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The patent divides the heat dissipation function into multiple segments: the heating element, the heat transfer portion (intermediate thermal pathway), and the heat dissipation portion (final heat sink). This segmented approach allows efficient heat distribution across the module, accommodating high-density component layouts while maintaining thermal management effectiveness.

Inventive Principle:
Principle #1Segmentation

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 configuration effectively reduces or prevents the deterioration of electrical characteristics by efficiently dissipating heat, even with high heat generation or reduced module thickness, and allows for high-density component mounting without the need for additional heat sinks.

Implementation Method 1

The heat transfer portion is disposed on the second surface of the second electronic component, the heat transfer portion being connected to both the first terminal electrode and the second terminal electrode. The heat dissipation portion is connected to the board via the first terminal electrode, the second terminal electrode, and the heat transfer portion.

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS11317541B2Electronic component module, electronic component unit, and method for manufacturing electronic component module
Publication Date: 2022.04.26 MURATA MFG CO LTD
  • US11317541B2 patent drawing
  • US11317541B2 patent drawing
  • US11317541B2 patent drawing

AI summary

An electronic component module includes a second terminal electrode that is independent of a first terminal electrode in terms of potential. A second electronic component is mounted on a board, with a first surface thereof facing the board. A heat transfer portion is disposed on a second surface of the second electronic component, the heat transfer portion being connected to both the first terminal electrode and the second terminal electrode. A heat dissipation portion is connected to the board via the first terminal electrode, the second terminal electrode, and the heat transfer portion.