Adhesive Layer Segmentation for Display Panel Bending Integrity
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Solution Overview
Problem
Existing display devices face challenges in simplifying their manufacturing processes while maintaining effective polarization and structural integrity, particularly in integrating polarizing layers and support structures without increasing complexity or costs.
Innovation Solution
A display device design featuring a polarizing layer overlapping a non-bending area of the display panel, a support layer integrated with the polarizing layer, and adhesive layers with specific configurations to simplify manufacturing, including a curved second adhesive portion over the bending area and a uniform thickness for the support and polarizing layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a polarizing layer and support layer are integrated as a single shape, then manufacturing complexity is reduced and production is simplified, but structural integrity and stress distribution may be compromised
Solution Approach 1:
The adhesive layer is divided into two distinct portions: a first adhesive portion between the non-bending area and the polarizing layer, and a second adhesive portion between the bending area and the support layer. This segmentation allows each adhesive portion to be optimized for its specific functional requirements while maintaining the overall integrated structure.
Solution Approach 2:
Different regions of the display panel are provided with different adhesive configurations tailored to their specific needs. The non-bending area receives adhesive optimized for polarizing layer attachment, while the bending area receives adhesive optimized for support layer attachment, ensuring local optimization of both structural integrity and manufacturing simplicity.
2Strength
If the adhesive layer is divided into first and second adhesive portions for different areas, then structural integrity is improved, but manufacturing complexity increases
Solution Approach 1:
The first adhesive portion and second adhesive portion are provided as an integrated shape, combining two functional adhesive regions into a single continuous adhesive layer. This merging maintains structural integrity while simplifying the manufacturing process by reducing the number of separate adhesive components.
Solution Approach 2:
The integrated adhesive layer serves multiple functions simultaneously: it provides adhesion for the polarizing layer in the non-bending area, provides adhesion for the support layer in the bending area, and maintains structural continuity across the entire display panel.
3Reliability
If the second adhesive portion has a curved shape over the entire bending area, then adhesion to the bent surface is improved, but material usage and process complexity increase
Solution Approach 1:
The second adhesive portion is designed with a curved shape that matches the curvature of the bending area, allowing the adhesive to conform to the bent surface geometry. This curvature ensures reliable adhesion between the support layer and the bent display panel surface.
Solution Approach 2:
The adhesive layer is implemented as a flexible thin film that can bend and conform to the curved geometry of the bending area without breaking or delaminating, ensuring reliable adhesion while maintaining structural flexibility.
4Ease of manufacture
If the support layer and polarizing layer have uniform thickness, then manufacturing is simplified and material consistency is improved, but adaptability to different functional requirements may be reduced
Solution Approach 1:
While maintaining uniform thickness for manufacturing simplicity, the invention changes other parameters such as the adhesive configuration and layer positioning to adapt to different functional requirements in different areas of the display panel.
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
This design simplifies the manufacturing process, reduces tensile stress on the display panel, and maintains effective polarization control, enhancing the structural integrity and ease of production while minimizing material usage and process complexity.
Implementation Method 1
an adhesive layer including a first adhesive portion between the non-bending area of the display panel and the polarizing layer and a second adhesive portion between the bending area of the display panel and the support layer
Implementation Method 2
The polarizing layer may be disposed on an adhesive layer disposed on the display module to reduce external reflection
Data Source
AI summary
A display device includes a display panel including a bending area and a non-bending area adjacent to the bending area, a polarizing layer on the display panel and overlapping with the non-bending area, a support layer on the display panel and overlapping with the bending area, and an adhesive layer including a first adhesive portion between the non-bending area of the display panel and the polarizing layer and a second adhesive portion between the bending area of the display panel and the support layer.