Island-Bridge Mesh Structure for Stretchable Device Reliability

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Solution Overview

Problem

Existing electronic devices face challenges in maintaining longevity, yield rate, and reliability when subjected to bending, curling, and stretching due to the impact of flexible and stretchable designs.

Innovation Solution

The electronic device incorporates a stretchable substrate with island and bridge portions, featuring a mesh pattern with disconnection-preventing designs to enhance reliability and durability during deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the electronic device uses a flexible and stretchable design to adapt to various locations and situations, then the adaptability and versatility are improved, but the reliability and lifetime are worsened due to bending and stretching actions

Engineering Contradiction:

Improveadaptability to various locations and situationsVSAvoidreliability under bending and stretching

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The substrate is divided into multiple island portions connected by bridge portions, allowing each segment to deform independently while maintaining overall structural integrity during bending and stretching operations

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The electronic device incorporates a stretchable substrate that can dynamically change its shape and size to adapt to different mounting surfaces and wearable configurations, transforming from a rigid structure to a flexible, deformable system

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the electronic device is made flexible and stretchable for wearable applications, then the ease of operation and comfort are improved, but the manufacturing precision and yield rate are worsened

Engineering Contradiction:

Improvewearability and comfortVSAvoidyield rate during fabrication

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The electronic device uses a stretchable substrate with island and bridge portions that can be bent and stretched without breaking, enabling wearable applications while maintaining structural integrity

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS12418978B2Electronic device

Publication Date: 2025.09.16 INNOLUX CORP

AI summary

An electronic device includes a stretchable substrate, a plurality of first electronic units and a plurality of second electronic units. The stretchable substrate has a plurality of island portions and a plurality of bridge portions, and each of the bridge portions connecting at least two of the island portions. The first electronic units are disposed on the island portions. The second electronic units are disposed on the stretchable substrate, each of the second electronic units includes a mesh pattern disposed on at least one of the island portions, and the mesh pattern includes a first opening overlapped with at least one of the first electronic units.