Display Panel Via-Hole Layout for Encapsulation Gas Discharge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The reliability of display panels, particularly those based on OLED or LED technology, is compromised due to the difficulty in discharging gases generated within the screen body, leading to encapsulation failures.
Innovation Solution
The display panel design incorporates via holes in the inorganic layer to expose portions of the organic layer, allowing for gas discharge paths that bypass the isolation structure, thereby facilitating the expulsion of gases and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inorganic layer is made continuous and complete for encapsulation, then the encapsulation protection is improved, but the gas discharge capability deteriorates
Solution Approach 1:
The inorganic layer is segmented by introducing via holes that penetrate through it, creating discrete openings that allow gas discharge while maintaining encapsulation protection in other areas. This segmentation enables the layer to simultaneously provide both protection and gas release pathways.
Solution Approach 2:
The inorganic layer has different properties in different locations: it remains continuous and protective in most areas, but has localized openings (via holes) in specific regions to enable gas discharge. This local variation in structure allows simultaneous achievement of encapsulation and gas release functions.
2Reliability
If the isolation structure is extended to cover the entire border region, then the electrical isolation is improved, but the gas discharge path is blocked
Solution Approach 1:
The isolation structure is segmented by creating gaps or discontinuities at specific locations where via holes are positioned, allowing gas to pass through while maintaining electrical isolation in other critical areas. The isolation structure is divided into segments that preserve both functions.
Solution Approach 2:
The isolation structure has varying coverage: it provides complete electrical isolation in display regions and most border areas, but has localized reductions or gaps in coverage at specific positions to allow gas discharge pathways to remain open.
3Object-generated harmful factors
If via holes are added to the inorganic layer for gas discharge, then the gas discharge capability is improved, but the encapsulation integrity deteriorates
Solution Approach 1:
Specific portions of the inorganic layer are extracted or removed to form via holes, creating dedicated gas discharge pathways. This extraction is performed selectively in non-critical areas, removing only the minimum necessary material to enable gas release while preserving encapsulation elsewhere.
Solution Approach 2:
The via holes act as intermediary structures that mediate between the encapsulation requirement and gas discharge need. They provide controlled pathways that allow gas to escape while the surrounding encapsulation structure maintains protection, serving as a bridge between conflicting requirements.
4Object-generated harmful factors
If the via holes are positioned within the isolation structure projection, then the gas discharge path is blocked, but if positioned outside, then the encapsulation protection is reduced
Solution Approach 1:
The via holes are positioned in the lateral dimension outside the isolation structure's projection area, utilizing the border region space. This spatial arrangement in another dimensional configuration allows gas discharge pathways to coexist with the isolation structure without overlapping, thereby maintaining both functions simultaneously.
Data Source
AI summary
A display panel, a method of manufacturing the display panel and an electronic device The display panel includes a display region and a non-display region. The display panel includes a substrate; a first organic layer, located on a side of the substrate; an inorganic layer, located on a side of the first organic layer away from the substrate and provided with a via hole exposing at least a portion of the first organic layer and located within the first border region; and an isolation structure, located on a side of the inorganic layer away from the substrate and extending from the display region to the non-display region. An orthographic projection of the via hole on the substrate is located outside an orthographic projection of the isolation structure on the substrate.