Display Panel Non-Overlapping Inorganic Layers Prevent Peeling
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Solution Overview
Problem
Existing display panels face issues with the peeling of touch function layers due to poor bonding forces between inorganic and organic materials, leading to water vapor intrusion and reduced light-emitting performance, which increases production costs and decreases yield rates.
Innovation Solution
The display panel design includes a specific arrangement of inorganic and organic layers where the inorganic encapsulation layer and dielectric layer do not overlap with the organic structure, maintaining a certain distance to prevent water vapor intrusion and enhance bonding, thereby improving the encapsulation effect and reducing peeling risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inorganic encapsulation layer and inorganic dielectric layer are arranged to overlap with the organic structure, then the coverage and protection are improved, but the bonding force between inorganic and organic materials deteriorates, causing peeling
Solution Approach 1:
The patent divides the encapsulation structure into distinct inorganic and organic layers, with the inorganic encapsulation layer and inorganic dielectric layer positioned adjacent to but not overlapping with the organic structure. This segmentation allows each layer to perform its specific function: the inorganic layers provide encapsulation and protection, while the organic structure maintains bonding interfaces without being compromised by direct contact with inorganic materials that cause peeling.
Solution Approach 2:
The patent introduces an intermediate arrangement where the inorganic encapsulation layer and inorganic dielectric layer are positioned with a specific spatial relationship (non-overlapping) relative to the organic structure. This intermediate positioning acts as a mediator that prevents direct harmful interaction between inorganic and organic materials while still maintaining the overall encapsulation effect and structural integrity.
2Object-affected harmful factors
If the inorganic encapsulation layer and inorganic dielectric layer are arranged to overlap with the organic structure, then the protection against water vapor is improved, but the peeling risk increases due to poor bonding
Solution Approach 1:
The patent segments the protective function into separate inorganic layers that are positioned adjacent to the organic structure without overlapping. This segmentation allows the inorganic encapsulation layer to provide water vapor protection while the non-overlapping arrangement with the organic structure prevents peeling, thus resolving the contradiction between protection and reliability.
Solution Approach 2:
The patent uses the spatial arrangement (non-overlapping configuration) as an intermediary mechanism that mediates between the need for water vapor protection and the need to prevent peeling. The inorganic layers provide the protective barrier while the intermediate positioning ensures that the organic structure maintains its bonding integrity without direct contact with inorganic materials that cause peeling.
3Area of stationary object
If the inorganic encapsulation layer and inorganic dielectric layer are arranged to overlap with the organic structure, then the encapsulation coverage is improved, but the production cost and yield rate deteriorate due to peeling issues
Solution Approach 1:
The patent segments the encapsulation structure to achieve sufficient coverage through the inorganic encapsulation layer and inorganic dielectric layer positioned adjacent to the organic structure. This segmentation provides adequate encapsulation coverage while avoiding the peeling problems that would reduce yield, thus improving productivity.
Solution Approach 2:
The patent uses the non-overlapping spatial arrangement as an intermediary solution that mediates between encapsulation coverage requirements and yield rate concerns. The inorganic layers provide the necessary coverage while the intermediate positioning prevents peeling-related defects, thereby maintaining high yield rates and improving overall productivity.
Data Source
AI summary
A display panel includes a display substrate and a touch function layer. The display substrate includes a substrate, a first barrier wall, an organic structure and a film encapsulation layer. The organic structure is on the substrate and surrounds the first barrier wall. The organic structure includes at least one organic layer. The film encapsulation layer is on a side of the first barrier wall away from the substrate. An inorganic encapsulation layer in the film encapsulation layer covers the first barrier wall. On the substrate, an orthographic projection of the inorganic encapsulation layer is non-overlapping with an orthographic projection of the organic structure. The touch function layer includes an inorganic dielectric layer contacting the film encapsulation layer. The inorganic dialectric layer covers the first barrier wall. On the substrate, an orthographic projection of the inorganic dielectric layer is non-overlapping with the orthographic projection of the organic structure.