Foldable Sensing Unit Layout for Stable Signals at the Hinge

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Solution Overview

Problem

Existing foldable electronic devices face challenges in achieving desired deformable effects, lifespan, and display quality, particularly in integrating sensing units that require efficient signal transmission and durability during folding.

Innovation Solution

The electronic device incorporates a sensing unit divided into two or more portions, driven by separate driving circuits, with asymmetrical signal inputs and materials tailored for enhanced structural strength and reliability near folding axes, reducing the risk of wire breakage and improving stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the sensing unit is integrated into foldable electronic devices, then the device functionality is improved, but the risk of wire breakage and structural damage during folding increases

Engineering Contradiction:

Improvedevice functionalityVSAvoidwire breakage risk

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The sensing unit is divided into two or more portions, with each portion driven by separate driving circuits. This segmentation allows the sensing unit to be distributed across different regions of the foldable device, reducing stress concentration on single wires during folding operations and lowering the risk of wire breakage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different materials are used for the sensing unit portions located near folding axes versus other regions. Specifically, portions near folding axes employ materials with enhanced structural strength to withstand the mechanical stress and deformation during folding, while other portions can use standard materials.

Inventive Principle:

Principle #3Local quality

2Reliability

If separate driving circuits are used for each sensing unit portion, then signal transmission stability is improved, but device complexity increases

Engineering Contradiction:

Improvesignal transmission stabilityVSAvoiddriving circuit configuration

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The driving circuits are segmented to correspond with each sensing unit portion, allowing independent control and signal transmission optimization for each region. This segmentation improves signal transmission stability by reducing interference and ensuring dedicated signal paths for each sensing unit portion.

Inventive Principle:

Principle #1Segmentation

3Strength

If asymmetrical signal inputs are used, then structural strength near folding axes is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improvestructural strength near folding axesVSAvoidsignal input positioning

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The signal inputs are configured asymmetrical to the axis, with different arrangements for first and second signal inputs corresponding to sensing unit portions on opposite sides of the folding axis. This asymmetrical configuration optimizes structural strength near folding axes by aligning signal input positions with the mechanical stress distribution pattern during folding.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS12535911B2Electronic device

Publication Date: 2026.01.27 INNOLUX CORP

AI summary

An electronic device includes a substrate, a sensing unit overlapped with the substrate and including a first sub-unit and a second sub-unit, a first signal input electrically connected to the first sub-unit and a second signal input electrically connected to the second sub-unit. The first sub-unit and the second sub-unit are symmetrical to an axis, and the first signal input and the second signal input are asymmetrical to the axis.