Flexible Display Panel Supporting Structure for Layer Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display panels tend to fail after being bent multiple times due to differences in elastic modulus among film layers, leading to peeling, falling off, or breaking between layers.
Innovation Solution
A flexible display panel with a supporting structure comprising stacked supporting layers and flexible layers disposed between them, where the supporting layers form a spring-like structure with angles greater than 0° and less than 90° relative to the display surface, providing support and stress relief to prevent layer separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a flexible display panel uses multiple film layers with different elastic moduli, then the panel achieves necessary structural support and functionality, but the panel becomes prone to peeling, falling off, or breaking between layers after repeated bending
Solution Approach 1:
The patent applies parameter changes by modifying the elastic modulus distribution across different layers of the flexible display panel. Specifically, the patent uses a first flexible substrate with a first elastic modulus and a second flexible substrate with a second elastic modulus that is different from the first. This controlled variation in elastic modulus parameters allows each layer to deform at different rates during bending, reducing stress concentration and preventing layer separation while maintaining overall structural support.
Solution Approach 2:
The patent employs composite materials by combining multiple flexible substrates with different elastic moduli into a single integrated structure. The first flexible substrate and second flexible substrate are bonded together to form a composite structure that leverages the complementary mechanical properties of each material. This composite approach enables the display panel to achieve both the structural support needed for functionality and the flexibility required for repeated bending without layer separation.
2Adaptability or versatility
If the flexible display panel is made more flexible to improve bendability, then the panel becomes more prone to stress concentration and layer separation during repeated bending
Solution Approach 1:
The patent addresses this contradiction by changing the elastic modulus parameter across different layers. The first flexible substrate has a first elastic modulus while the second flexible substrate has a second elastic modulus that differs from the first. This gradient in elastic modulus parameters allows the panel to achieve high bendability while distributing stress more evenly across layers during repeated bending, preventing stress concentration and layer separation.
3Ease of manufacture
If the flexible display panel uses uniform material properties across all layers, then manufacturing is simplified, but the panel cannot effectively distribute stress during bending leading to layer separation
Solution Approach 1:
The patent applies local quality by assigning different elastic moduli to different layers of the flexible display panel. The first flexible substrate has a first elastic modulus while the second flexible substrate has a second elastic modulus. This localized variation in material properties allows each layer to be optimized for its specific functional requirements and stress distribution needs, preventing layer separation during bending while maintaining manufacturability through controlled material selection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces the likelihood of display failure and extends the service life of flexible display panels by minimizing peeling and falling off between layers when bent multiple times, while also reducing stress on potentially weak areas.
Implementation Method 1
The supporting structure includes a plurality of supporting layers disposed on a stack and a flexible layer disposed between each two adjacent supporting layers. An angle between at least one supporting layer of the plurality of supporting layers and a plane where a display surface of the flexible display body is located is greater than 0° and less than 90°. An internal structure of the supporting structure forms a spring like structure... When the flexible display panel is bent, the supporting structure not only plays a supporting role, but also releases stress
Data Source
AI summary
A flexible display panel includes a flexible display body and a supporting structure disposed on a side of the flexible display body. The supporting structure includes a plurality of supporting layers disposed on a stack and a flexible layer disposed between each two adjacent supporting layers. An angle between at least one supporting layer of the plurality of supporting layers and a plane where a display surface of the flexible display body is located is greater than 0° and less than 90°.