Flexible Display Screen Layer Adhesion via Interlocking Holes

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Solution Overview

Problem

Flexible display screens with multi-layer structures are prone to delamination during folding and curling, leading to display defects like black spots and potential damage.

Innovation Solution

A flexible display screen design featuring a first, second, and third film layer with connecting holes and a connecting piece made of organic material, which disperses force and improves adhesive strength between layers, preventing delamination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a multi-layer structure is used for the flexible display screen, then the display functionality is improved, but the screen becomes prone to delamination during folding and curling

Engineering Contradiction:
Improvedisplay functionalityVSAvoidlayer adhesion stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent introduces connecting holes through the multi-layer structure, dividing the continuous adhesive interface into segmented regions. These holes allow the layers to be mechanically interlocked while maintaining flexibility, preventing delamination during folding and curling operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connecting piece filled in the connecting holes acts as an intermediary element between the first and second film layers. This intermediary component enhances the bonding interface by providing a mechanical anchor that distributes stress and prevents direct delamination between the film layers during bending operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If connecting holes are introduced to prevent delamination, then layer adhesion is improved, but the structural integrity may be compromised

Engineering Contradiction:
Improvelayer adhesion stabilityVSAvoidstructural integrity
Core Design Contradiction:
Stability of the object's compositionVSStrength

Solution Approach 1:

The connecting piece serves as a mediator that fills the connecting holes and provides mechanical interlocking between layers. This intermediary component compensates for the potential weakness introduced by holes by creating a distributed reinforcement pattern that actually enhances overall structural integrity during bending.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs a composite structure where the connecting piece material is combined with the film layer materials. This composite approach creates a multi-phase structure that leverages the strengths of different materials to maintain both adhesion stability and structural integrity simultaneously.

Inventive Principle:
Principle #40Composite materials

3Reliability

If the flexible display screen is made more robust to prevent damage, then reliability is improved, but flexibility and ease of carrying are reduced

Engineering Contradiction:
Improvedamage resistanceVSAvoidflexibility and portability
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The segmented structure with connecting holes allows the display screen to maintain robustness through distributed reinforcement while preserving flexibility. The holes create a pattern that enables bending without compromising overall structural integrity, achieving both reliability and ease of operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent utilizes thin film structures with integrated connecting pieces that maintain flexibility while providing damage resistance. The thin film design with strategic reinforcement points allows the screen to be both robust against damage and easily flexible for portability.

Inventive Principle:
Principle #30Flexible shells and thin films

Data Source

PatentUS20250172968A1Flexible display screen and electronic device
Publication Date: 2025.05.29 VIVO MOBILE COMM CO LTD
  • US20250172968A1 patent drawing
  • US20250172968A1 patent drawing
  • US20250172968A1 patent drawing

AI summary

This application provides a flexible display screen and an electronic device. The flexible display screen includes a first film layer, a second film layer, a third film layer, and a connecting piece. The first film layer, the second film layer, and the third film layer are stacked, the third film layer is disposed between the first film layer and the second film layer. The first film layer is provided with a first connecting hole. The second film layer is provided with a second connecting hole. The third film layer is provided with a third connecting hole. The first connecting hole, the second connecting hole, and the third connecting hole communicate with each other. The connecting piece is filled in the first connecting hole, the second connecting hole, and the third connecting hole to connect the first film layer, the second film layer, and the third film layer.