Segmented Packing Assembly for Curved OLED Panels
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Solution Overview
Problem
Curved OLED display panels face challenges in maintaining structural strength due to high bending stress from thick glass substrates, and existing encapsulation structures are prone to moisture and oxygen leakage, making them susceptible to cracking and difficult to fabricate, especially for large-sized panels.
Innovation Solution
A packing assembly comprising an adhesive layer, deformable structures, and packing assembly segments that reduce tangential stress and provide support to the display panel without external force, using materials capable of stretching and bending, such as metal, rubber, or polymers, to form a continuous or discrete packing layer that covers the adhesive layer and connects the segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick glass substrate is used to provide structural support, then the bending stress resistance is improved, but the overall weight and manufacturing cost increase
Solution Approach 1:
The packing structure is divided into multiple discrete packing segments (first packing segment, second packing segment, etc.) arranged in an array, replacing the traditional single continuous packing layer. This segmentation allows each segment to independently support local bending stress while reducing the total material required, thereby decreasing weight while maintaining strength.
Solution Approach 2:
The invention uses a composite packing structure combining rigid packing segments (for strength) with flexible sealing structures (for adaptability). The packing segments are made of rigid materials to provide bending stress resistance, while the sealing structures use flexible materials to accommodate curvature changes, creating a composite system that optimizes both strength and weight.
2Ease of manufacture
If a thin encapsulation structure is used to reduce fabrication force, then the ease of curving is improved, but the moisture and oxygen sealing performance deteriorates
Solution Approach 1:
The invention employs flexible sealing structures that connect the packing segments, forming a continuous barrier against moisture and oxygen. These flexible sealing structures can accommodate the curved shape of the display panel while maintaining their sealing function, thus providing reliable protection without requiring a thick rigid encapsulation layer.
Solution Approach 2:
The encapsulation is segmented into multiple discrete packing segments connected by flexible sealing structures. This segmentation allows each segment to be optimized for its specific function (rigid for support, flexible for sealing) while collectively providing both curving ease and moisture/oxygen protection.
3Stability of the object's composition
If external forces are applied to maintain curved shape during fabrication, then the curved shape stability is improved, but the fabrication complexity and external stress increase
Solution Approach 1:
The packing structure incorporates flexible sealing structures that allow dynamic adaptation to the curved shape. These flexible components can elastically deform to accommodate the panel's curvature changes during fabrication and operation, eliminating the need for complex external forcing mechanisms to maintain the curved shape.
Solution Approach 2:
The packing structure is designed to self-accommodate to the curved shape through the elastic deformation of its flexible sealing structures. The structure inherently provides the necessary compliance to match the panel's curvature without requiring external intervention or complex fabrication processes, thereby simplifying the overall fabrication procedure.
4Strength
If the packing assembly is made rigid to provide support, then the structural strength is improved, but the susceptibility to cracking under bending stress increases
Solution Approach 1:
The rigid packing structure is segmented into multiple discrete segments connected by flexible sealing structures. This segmentation allows the rigid segments to provide structural support strength while the flexible connectors absorb bending stresses, preventing stress concentration that would lead to cracking in a fully rigid structure.
Solution Approach 2:
The invention changes the mechanical parameters of the packing assembly by introducing flexible sealing structures with different stiffness characteristics. The rigid packing segments maintain high stiffness for support, while the flexible sealing structures have lower stiffness to accommodate bending, creating a multi-parameter system that balances strength and crack resistance.
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 enhances the structural strength of curved OLED display panels by distributing bending stress and reducing the risk of cracking, while being easier to handle and suitable for large-sized panels, thus improving the fabrication process and durability.
Implementation Method 1
the deformable structures are made of materials capable of stretching, bending, or a combination of stretching and bending
Data Source
AI summary
The present disclosure provides a packing assembly for a display panel. The packing assembly includes an adhesive layer, a first surface of the adhesive layer bonded onto a substrate; a plurality of deformable structures, and a plurality of packing assembly segments. The plurality of packing assembly segments are connected by the plurality of deformable structures, the plurality of packing assembly segments and the plurality of deformable structures being bonded onto a second surface of the adhesive layer.