Stretchable Display Inter-Island Connector Structure Against Film Breakage

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Solution Overview

Problem

Existing stretchable display panels face issues with film layers easily breaking or separating during deformation processes, leading to low yields and poor performance.

Innovation Solution

Stretchable display units are designed with inter-island connectors and island connectors to connect adjacent pixel islands and connectors to connect adjacent pixel islands and connectors to connect pixel islands and connectors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If film layers are used in inter-island connectors for stretchable display panels, then electrical connectivity between pixel islands is achieved, but the film layers easily break or separate during deformation processes

Engineering Contradiction:

Improvedurability of film layersVSAvoidresistance to breaking and separation

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent employs a composite structure consisting of multiple layers including inorganic insulating layers, organic insulating layers, and conductive layers. This multi-material composite approach allows each layer to contribute its specific properties (flexibility, insulation, conductivity) while working together to prevent breaking and separation during deformation, directly resolving the reliability-strength contradiction.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The inter-island connector is divided into multiple discrete layers (first inorganic insulating layer, first organic insulating layer, conductive layers, etc.) rather than using a single monolithic structure. This segmentation allows each layer to independently handle stress and deformation, preventing catastrophic failure and reducing the likelihood of breaking and separation.

Inventive Principle:

Principle #1Segmentation

2Stability of the object's composition

If multiple insulating layers are added to prevent breaking, then structural integrity improves, but device complexity increases

Engineering Contradiction:

Improvestructural integrityVSAvoidnumber of layers

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

Different insulating layers are strategically positioned at specific locations within the inter-island connector based on their functional requirements. The inorganic insulating layers provide barrier properties where needed, while organic insulating layers provide flexibility in deformation-prone areas. This localized optimization achieves structural integrity without uniformly increasing complexity throughout the entire device.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12557542B2Stretchable display panel and manufacturing method therefor, and display device

Publication Date: 2026.02.17 BOE TECHNOLOGY GROUP CO LTD

AI summary

Provided is a stretchable display panel. The stretchable display panel includes: a flexible substrate; a plurality of pixel islands on the flexible substrate, the pixel islands being provided with at least one light-emitting device; and inter-island connectors for connecting the adjacent pixel islands, wherein the inter-island connector includes: an inorganic insulating layer and a first organic insulating layer, wherein the inorganic insulating layer is more proximal to the flexible substrate than the first organic insulating layer, and a plurality of first openings are formed in the inorganic insulating layer, a portion of the first organic insulating layer being in the first openings.