Display Panel Partition Bar Layout for Aperture Encapsulation
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Solution Overview
Problem
Display panels with irregular shapes, such as those featuring apertures or depressions, are prone to water and oxygen erosion due to incomplete encapsulation of the electroluminescent device layers, leading to reliability issues.
Innovation Solution
A display panel design with a partition bar in the inner non-display area surrounding the aperture area, where the common layer is partitioned by the bar, and an inorganic layer fills the side etching channel to prevent water and oxygen intrusion, using materials with varying etching resistances and thicknesses for the partition and encapsulation layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel adopts irregular shapes with apertures or depressions, then the design flexibility and functionality are improved, but the encapsulation completeness deteriorates leading to water and oxygen erosion
Solution Approach 1:
The common layer is segmented into multiple independent regions by partition bars that extend from the substrate. These partition bars create separate enclosed spaces within the electroluminescent device, ensuring that each region is independently protected from water and oxygen erosion, thus maintaining encapsulation completeness in irregularly shaped display panels
Solution Approach 2:
The partition bars are strategically positioned at specific locations where apertures or depressions exist, providing localized protection only where needed. This allows the display panel to maintain irregular shapes for design flexibility while ensuring that critical areas with potential erosion risks are properly encapsulated
2Reliability
If the common layer extends to the inner non-display area to improve encapsulation, then the protection coverage is improved, but the manufacturing complexity increases due to partition requirements
Solution Approach 1:
The partition bars serve multiple functions simultaneously: they act as structural support elements, define the boundaries of enclosed spaces for encapsulation, and extend the common layer to the inner non-display area. This multi-functionality reduces the need for separate components and simplifies the overall manufacturing process despite the extended coverage requirement
3Manufacturing precision
If the partition bar uses materials with different etching resistances, then the side etching channel formation precision is improved, but the manufacturing process complexity increases
Solution Approach 1:
The partition bar is constructed with materials having different etching resistance parameters - the first layer material has higher etching resistance than the second layer material. This parameter difference enables selective etching to create precise side etching channels, where the lower resistance material is removed to form the channel while the higher resistance material remains as a protective barrier
Data Source
AI summary
The present disclosure relates to a display panel, a display device, and a method for manufacturing a display panel. The display panel includes a display area, an aperture area, and an inner non-display area between the display area and the aperture area. The display area is arranged with an electroluminescent device. The electroluminescent device includes a common layer extending to the inner non-display area. The inner non-display area is arranged with a partition bar at least partially surrounding the aperture area. The common layer located in the inner non-display area is partitioned by the partition bar.