Resin Composition for Flexible Display Protective Sheet Adhesion
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Solution Overview
Problem
Display devices, especially flexible and foldable ones, are prone to damage from moisture due to inadequate protection by existing protective sheets, which lack sufficient wettability and adhesive strength, leading to reduced reliability and longevity.
Innovation Solution
A resin composition comprising alkyl acrylate, polyethylene glycol alkyl ether methacrylate, hydroxyalkyl acrylate, perfluorinated alkyl (meth)acrylate, and silicone (meth)acrylate is used to create an adhesive layer with enhanced wettability and adhesive strength for a protective sheet, which is applied to a display device, including a C9 type hydrocarbon resin and a curing agent to ensure reliable protection even when the device is folded or bent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing protective sheets are used, then the device structure is simple, but the adhesive strength and wettability are insufficient leading to moisture damage
Solution Approach 1:
The patent uses a composite resin composition containing multiple specific components (alkyl acrylate, polyethylene glycol alkyl ether methacrylate, hydroxyalkyl acrylate, perfluorinated alkyl (meth)acrylate, and silicone (meth)acrylate) to achieve both high adhesive strength and moisture resistance. This composite material approach resolves the contradiction by combining multiple functional materials that work synergistically to provide reliable adhesion while protecting against moisture damage.
Solution Approach 2:
The patent optimizes the weight ratios of each resin component within specific ranges (e.g., alkyl acrylate: 58-88 parts, polyethylene glycol alkyl ether methacrylate: 8-12 parts, etc.) to achieve the desired balance between adhesive strength, wettability, and moisture resistance. By carefully controlling the parameters of the resin composition, the patent achieves high reliability without excessive complexity.
2Reliability
If the adhesive layer forms a strong bond with the functional layer, then protection is improved, but detachment becomes difficult
Solution Approach 1:
The patent adjusts the chemical composition and molecular structure parameters of the resin to create an adhesive layer with optimized bonding characteristics. The specific combination of resin components and their ratios enables the adhesive to form a strong protective bond during operation while maintaining controlled detachment properties when needed, resolving the contradiction between protection strength and ease of removal.
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 protective sheet with increased adhesive strength and wettability effectively prevents moisture damage, enhancing the reliability and longevity of display devices by maintaining contact with the display surface without forming a permanent bond, allowing for easy detachment and maintaining image clarity.
Implementation Method 1
a resin composition with increased wettability and adhesive strength
Implementation Method 2
an adhesive layer with increased wettability and adhesive properties
Data Source
AI summary
The present disclosure provides a resin composition, and a protective sheet of a display device that includes the resin composition. The resin composition includes alkyl acrylate, polyethylene glycol alkyl ether methacrylate, hydroxyalkyl acrylate, perfluorinated alkyl (meth)acrylate, and silicone (meth)acrylate.