Foldable Electronic Device Supporting Sheet for Assembly Yield

Solution Overview

Problem

The challenge of improving the yield rate for manufacturing flexible electronic devices, particularly in ensuring the structural integrity and reliability of foldable regions, has not been adequately addressed, leading to increased failure rates during assembly and folding.

Innovation Solution

The design incorporates a supporting sheet with a foldable portion and non-foldable portions, featuring specific via configurations that enhance structural support by adjusting the protrusion and width ratios of these portions relative to the folding axis, minimizing damage and bending during assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the supporting sheet is designed with uniform structure throughout, then the manufacturing process is simple, but the structural integrity of foldable regions deteriorates during assembly and folding

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidstructural integrity of foldable region

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The supporting sheet is divided into distinct regions: a foldable portion corresponding to the foldable region of the panel, and non-foldable portions with via holes. This segmentation allows different parts of the supporting sheet to have different functions - the foldable portion flexes with the panel while the non-foldable portions maintain structural stability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The supporting sheet has non-uniform structure with via holes located in specific non-foldable portions. This local modification strengthens the supporting sheet at critical locations where the panel is folded, preventing breakage during assembly and folding operations

Inventive Principle:

Principle #3Local quality

2Reliability

If via holes are added to the supporting sheet to enhance structural support, then the reliability of foldable regions improves, but the manufacturing complexity increases

Engineering Contradiction:

Improvestructural support for foldable regionVSAvoidsupporting sheet structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The supporting sheet is divided into distinct regions: a foldable portion corresponding to the foldable region of the panel, and non-foldable portions with via holes. This segmentation allows different parts of the supporting sheet to have different functions - the foldable portion flexes with the panel while the non-foldable portions maintain structural stability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The supporting sheet has non-uniform structure with via holes located in specific non-foldable portions. This local modification strengthens the supporting sheet at critical locations where the panel is folded, preventing breakage during assembly and folding operations

Inventive Principle:

Principle #3Local quality

3Strength

If the supporting sheet is made more rigid to prevent bending, then the structural integrity improves, but the flexibility of the overall device deteriorates

Engineering Contradiction:

Improvestructural integrityVSAvoidflexibility of device

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The supporting sheet is divided into distinct regions: a foldable portion corresponding to the foldable region of the panel, and non-foldable portions with via holes. This segmentation allows different parts of the supporting sheet to have different functions - the foldable portion flexes with the panel while the non-foldable portions maintain structural stability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The supporting sheet has non-uniform structure with via holes located in specific non-foldable portions. This local modification strengthens the supporting sheet at critical locations where the panel is folded, preventing breakage during assembly and folding operations

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250338411A1Electronic device

Publication Date: 2025.10.30 INNOLUX CORP

AI summary

An electronic device is provided, including a panel and a supporting sheet. The panel includes a foldable region with a folding axis. The supporting sheet is disposed under the panel, and includes a foldable portion and a first non-foldable portion. The foldable portion is overlapped with the foldable region. The first non-foldable portion is connected to the foldable portion, and includes a first part and a second part. The first part is located between the second part and the foldable portion. The first part has a first via, and the first part protrudes more in a first direction parallel to the folding axis with respect to the second part.