Grooved Flexible Display Panel Encapsulation
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Solution Overview
Problem
Flexible display devices face issues with the flatness of organic encapsulation layers and peeling between these layers and the substrate, which affects the overall quality of the display panel.
Innovation Solution
The proposed solution involves a display panel design with grooves disposed in the non-display area between the display area and the dam structure, allowing organic material to drain and increase the flatness of the organic encapsulation layer, thereby reducing peeling and improving the panel's quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organic encapsulation layer is formed on substrate, then encapsulation function is provided, but flatness deteriorates and peeling occurs
Solution Approach 1:
The patent applies preliminary action by forming a groove structure in the substrate before forming the organic encapsulation layer. This groove structure pre-establishes a configuration that guides and controls the organic material flow during subsequent encapsulation, preventing flatness deterioration and peeling issues that would otherwise occur during the encapsulation process.
2Reliability
If organic encapsulation layer is formed on substrate, then encapsulation function is provided, but peeling between layer and substrate increases
Solution Approach 1:
The groove structure is formed in advance in the substrate to create a configuration that enhances adhesion. The groove provides mechanical interlocking and increases the contact area between the organic encapsulation layer and substrate, preventing peeling during and after the encapsulation process while maintaining reliable encapsulation function.
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 increased flatness of the organic encapsulation layer and the enhanced contact area with the substrate reduce peeling and improve the overall quality of the display panel, facilitating better manufacturing processes and device performance.
Implementation Method 1
one or more grooves disposed in the non-display area between the display area and the dam structure, and an encapsulation layer covering the display area, the non-display area, and the one or more grooves, wherein the one or more grooves are configured to drain organic material during a process of forming the organic encapsulation layer
Data Source
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AI summary
A display panel (21), a display device (2) and manufacturing methods thereof are provided. The display panel (21) includes a flexible substrate (11) having a display area (D) and a non-display area (C), a dam structure (13) located in the non-display area (C) and disposed around the display area (D), one or more grooves (14) disposed on the non-display area(C) between the display area (D) and the dam structure (13), and an organic encapsulation layer (151). The organic encapsulation layer (151) covers each of the display area (D), at least a portion of the non-display area (C), and the one or more grooves (14). Thus, a flatness of the organic encapsulation layer (151) may be improved and peeling may be reduced between the organic encapsulation layer (151) and the substrate (11) on which the organic encapsulation layer (151) is disposed, thereby improving an overall quality of the finished display panel (21).