Display Panel Encapsulation Around Openings for Moisture Blocking
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Solution Overview
Problem
Existing display panels face challenges in efficiently integrating various components within the display area while maintaining structural integrity and preventing moisture ingress through openings.
Innovation Solution
A display panel design featuring a substrate with an opening surrounded by light-emitting diodes, an encapsulation layer comprising inorganic and organic layers, partition walls, and grooves covered by an organic encapsulation layer, which includes grooves with protruding tips to disconnect functional layers and prevent moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If various components are arranged in the display area to increase functionality, then the area utilization and functionality are improved, but the structural integrity and moisture protection are worsened
Solution Approach 1:
The encapsulation layer is segmented into multiple inorganic encapsulation layers and organic encapsulation layers, with grooves dividing the structure into distinct regions. This segmentation allows different areas to serve different functions while maintaining overall moisture protection integrity.
Solution Approach 2:
Multiple encapsulation layers are nested within each other, with inorganic encapsulation layers positioned between organic encapsulation layers. This nested structure provides redundant moisture barriers while accommodating the integrated components in the display area.
2Reliability
If an encapsulation layer is added to protect against moisture, then moisture protection is improved, but the structural complexity is worsened
Solution Approach 1:
The encapsulation structure employs different materials and configurations in different regions. Inorganic encapsulation layers provide barrier properties in critical areas, while organic encapsulation layers provide flexible protection elsewhere, optimizing protection without uniform complexity throughout.
Solution Approach 2:
The encapsulation layer combines inorganic and organic materials to create a composite structure that leverages the advantages of both material types - the barrier properties of inorganic materials and the flexibility and conformability of organic materials - achieving effective moisture protection through material composition rather than structural complexity.
3Reliability
If grooves are defined in the encapsulation layer to disconnect functional layers, then moisture ingress prevention is improved, but the manufacturing complexity is worsened
Solution Approach 1:
The grooves are formed in the encapsulation layer during the manufacturing process before final assembly, preliminarily establishing the moisture barrier structure. This preliminary action simplifies subsequent assembly steps while ensuring proper moisture protection from the outset.
Data Source
AI summary
A display panel includes: a substrate defining an opening therein; a plurality of light-emitting diodes in a display area surrounding the opening; an encapsulation layer on the plurality of light-emitting diodes, the encapsulation layer including at least one inorganic encapsulation layer and at least one organic encapsulation layer; a first partition wall and a second partition wall in a non-display area between the opening and the display area in a direction from the display area to the opening; and a plurality of grooves defined above the at least one inorganic insulating layer in the non-display area. The at least one inorganic insulating layer is on the substrate. At least one of the plurality of grooves is defined between the first partition wall and the second partition wall and is covered with the organic encapsulation layer.