Flexible Display Reinforcing Strip Delamination Prevention
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Solution Overview
Problem
Flexible display panels tend to delaminate from their supporting layers after repeated bending, affecting the usability of flexible display screens due to inadequate bonding and stress distribution during deformation.
Innovation Solution
A flexible display structure is designed with a reinforcing strip laminated between the flexible display panel and the transparent cover plate, and between the panel and the supporting layer, using an ultraviolet-moisture dual-curing adhesive to enhance bonding and absorb impact, thereby preventing delamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flexible display panel is adhered to the supporting layer using conventional adhesive methods, then the initial bonding is achieved, but the bonding strength is insufficient after repeated bending
Solution Approach 1:
The patent uses an ultraviolet-moisture dual-curing adhesive that combines two different curing mechanisms (UV photopolymerization and moisture curing) to create a composite adhesive system. This allows the adhesive to achieve initial bonding through UV curing while developing enhanced long-term bonding strength and flexibility through moisture curing, preventing delamination after repeated bending cycles
Solution Approach 2:
The patent changes the curing parameters of the adhesive by introducing a dual-curing mechanism. The adhesive transitions from a single-state (uncured) to a two-stage curing process (UV curing followed by moisture curing), which modifies the adhesive's physical and chemical properties to achieve both initial bonding strength and long-term durability under bending conditions
2Ease of operation
If the flexible display structure is made thin and flexible for portability, then the ease of carrying is improved, but the impact resistance is reduced
Solution Approach 1:
The patent introduces a reinforcing strip made of material with higher mechanical strength than the flexible display panel itself. This creating a composite structure where the thin flexible panel maintains portability while the reinforcing strip provides enhanced impact resistance and structural integrity during bending operations
Solution Approach 2:
The patent segments the flexible display structure into distinct functional layers: the thin flexible display panel for portability, the reinforcing strip for structural strength, and the dual-curing adhesive for bonding. This segmentation allows each component to optimize its specific function while working together as an integrated system
3Adaptability or versatility
If the flexible display panel is bent repeatedly for flexibility, then the adaptability is improved, but the bonding stability deteriorates
Solution Approach 1:
The patent changes the rheological parameters of the adhesive through dual-curing, transforming it from a rigid bond to a more flexible bonding medium that can accommodate repeated bending. The moisture curing stage specifically creates a polymer network that maintains bonding stability while allowing the necessary flexibility for repeated bending cycles
Solution Approach 2:
The reinforcing strip acts as a beforehand cushioning element that protects the bonding interface from stress concentration during bending. By providing additional structural support at critical locations, it prevents the adhesive bond from failing under repeated mechanical stress
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 reinforcing strip improves the bending performance and reduces the risk of delamination by maximizing bonding forces and absorbing impact, ensuring the flexible display structure remains intact under normal use and bending tests.
Implementation Method 1
using an ultraviolet-moisture dual-curing adhesive to enhance bonding
Implementation Method 2
using an ultraviolet-moisture dual-curing adhesive to enhance bonding
Implementation Method 3
the reinforcing strip improves the bending performance and reduces the risk of delamination by maximizing bonding forces and absorbing impact
Data Source
AI summary
Provided are a flexible display structure. The flexible display structure includes a reinforcing strip, and a flexible display panel and a transparent cover plate that are laminated, wherein the transparent cover plate is provided with a fifth surface and a sixth surface opposite to each other, and a third side surface connecting the fifth surface to the sixth surface; and the flexible display panel is adhered to the transparent cover plate via an optical adhesive layer, and the reinforcing strip is disposed at least on the third side surface.