Mounting Board Insulator Wall for Miniature Shock Protection

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Solution Overview

Problem

As mounting components become miniaturized, their strength decreases, leading to a decrease in the reliability of mounting boards against external forces or shocks.

Innovation Solution

A mounting board design where electronic components and joining materials are enclosed within an insulator wall, with specific dimensional and height relationships to minimize gaps and provide shock buffering, and optionally using spacers and constituent materials to further enhance reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If electronic components are miniaturized, then the board can be further miniaturized and thinned, but the strength of the components becomes weaker and reliability against external force or shock decreases

Engineering Contradiction:

Improveboard sizeVSAvoidreliability against external force or shock

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The patent applies beforehand cushioning by forming a recess in the base material that surrounds the electronic component and joining material. This recess structure is prepared in advance to cushion and absorb external forces or shocks before they can damage the miniaturized electronic component, thereby resolving the contradiction between miniaturization and reliability.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent applies nested doll by placing the electronic component and joining material inside the recess formed in the base material. The recess acts as a protective container that nests the fragile miniaturized components, providing structural support and shock absorption while maintaining the miniaturized form factor of the board.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If the gap between electronic component and wall is reduced to 10 μm or less, then shock buffering capability is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improveshock buffering capabilityVSAvoidgap dimension control

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by specifying that the gap dimension between the electronic component and the recess wall should be 10 μm or less. This precise parameter control optimizes the shock buffering capability while the patent addresses the manufacturing challenge through proper design of the recess structure and joining material selection.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12439519B2Mounting board and circuit board

Publication Date: 2025.10.07 TDK CORP

AI summary

A mounting board includes: an electronic component including at least a pair of first terminals; and a circuit board including at least a pair of second terminals. The first terminals and the second terminals are electrically joined by a joining material containing a metal element, the electronic component and the joining material are disposed within a wall made of an insulator, a lower surface of the electronic component is lower than an upper surface of the wall, and when long sides of a region surrounded by the wall have a dimension d1 and long sides of the electronic component have a dimension d2, a value of (dimension d1−dimension d2) is 10 μm or less.