Display Opening Encapsulation Layout Against Moisture Ingress
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Solution Overview
Problem
Display apparatuses face challenges in maintaining reliability and functionality as they become thinner and lighter, with the expansion of display areas requiring integration of various components, leading to issues with foreign substances and moisture ingress.
Innovation Solution
A display apparatus design featuring a substrate with an opening area surrounded by a display area and an intermediate area, utilizing a layered structure with inorganic and organic encapsulation layers, partition walls, and laser-irradiated openings to prevent foreign substance and moisture ingress, while incorporating dummy emission layers and bypass wiring to accommodate additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display area is expanded to add various functions, then the versatility of the display apparatus is improved, but the reliability deteriorates due to increased susceptibility to foreign substances and moisture ingress
Solution Approach 1:
The patent divides the display structure into distinct regions: a display area for visual output and an intermediate area for component integration. This segmentation allows different functional zones to be optimized independently, with the intermediate area providing protected pathways for components while maintaining display functionality.
Solution Approach 2:
The intermediate area acts as a mediator zone between the display area and external components. It provides a transition region where encapsulation layers and partition walls can be strategically positioned to protect both the display elements and integrated components from foreign substances and moisture.
2Weight of moving object
If the display apparatus is made thinner and lighter, then the portability is improved, but the reliability deteriorates due to reduced protection against environmental factors
Solution Approach 1:
The patent employs thin-film encapsulation layers that provide moisture and foreign substance protection while maintaining the lightweight and thin profile of the display apparatus. These thin films are integrated into the existing layered structure without significantly increasing weight or thickness.
3Adaptability or versatility
If various components are arranged inside the display area to add functions, then the versatility is improved, but the device complexity increases leading to more potential failure points
Solution Approach 1:
By creating a distinct intermediate area separate from the display area, the patent segments the structural complexity into functional zones. This allows components to be integrated in a dedicated region with appropriate encapsulation and partitioning, reducing the complexity of routing and integration within the display area itself.
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
Enhances reliability by preventing foreign substance and moisture ingress, maintaining display performance, and allowing for the integration of additional components within the display area.
Implementation Method 1
a thin-film encapsulation layer on the display element, and including at least one inorganic encapsulation layer and at least one organic encapsulation layer
Implementation Method 2
utilizing a layered structure with inorganic and organic encapsulation layers, partition walls, and laser-irradiated openings
Data Source
AI summary
A display apparatus includes: a substrate including an opening area, a display area surrounding at least a portion of the opening area, and an intermediate area between the opening area and the display area; and a display element at the display area, and including a pixel electrode, an opposite electrode on the pixel electrode, and an intermediate layer between the pixel electrode and the opposite electrode. The intermediate layer includes a first common layer, a second common layer on the first common layer, and an emission layer between the first common layer and the second common layer, the first common layer and the second common layer extend to the intermediate area, and the second common layer is directly on the first common layer at the intermediate area.