Display Panel Heightening Layer Prevents Wire Short-Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In display panel manufacturing, cracks often occur during cutting, leading to failures in encapsulation and reduced reliability, and existing crack detect wires are prone to short-circuiting due to large breakage differences between blocking dams, resulting in ineffective crack detection.
Innovation Solution
A display panel design featuring a heightening layer between blocking dams to reduce breakage differences and an orthographic projection overlap of connection leading wires with the heightening layer, preventing short-circuits and ensuring effective crack detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If blocking dams are used to separate the hole area from the display area, then structural support and encapsulation are improved, but large breakage differences occur between blocking dams leading to short-circuits of connection leading wires
Solution Approach 1:
A heightening layer is introduced as an intermediary structure between the first blocking dam and the second blocking dam. This heightening layer has a height that is lower than that of the blocking dams, creating a gradual transition in height. The heightening layer serves as a mediator that reduces the breakage difference between adjacent blocking dams, preventing short-circuits of connection leading wires while maintaining the structural support function of the blocking dams.
2Measurement precision
If connection leading wires are routed through the blocking area, then crack detection capability is improved, but short-circuits occur due to large breakage differences between blocking dams
Solution Approach 1:
The heightening layer acts as an intermediary structure that the connection leading wires pass through. By providing a gradual height transition, the heightening layer reduces the breakage difference between blocking dams, ensuring that the connection leading wires maintain their integrity while still being able to detect cracks effectively.
Solution Approach 2:
The heightening layer is specifically positioned in the blocking area where connection leading wires need to pass through. It provides localized height adjustment only where needed, creating a smooth transition zone that prevents wire short-circuits without affecting the overall blocking dam structure or crack detection capability in other areas.
3Reliability
If blocking dams are made taller to improve encapsulation, then encapsulation effectiveness is improved, but breakage differences increase causing short-circuits
Solution Approach 1:
The encapsulation structure is segmented into multiple height levels: the first blocking dam, the second blocking dam, and the intermediate heightening layer. This segmentation allows each component to have an optimized height - the blocking dams can be tall for effective encapsulation, while the heightening layer provides a gradual transition that controls breakage differences and prevents short-circuits.
Solution Approach 2:
The height parameter of the encapsulation structure is changed across different zones. The blocking dams have a greater height for effective encapsulation, while the heightening layer has a reduced height to create a gradual transition. This parameter change strategy allows both tall blocking dams for encapsulation and controlled breakage differences for manufacturing precision.
Data Source
AI summary
Disclosed in embodiments of the present disclosure are a display panel, a preparation method thereof and a display apparatus. The display panel includes: a first blocking dam located in the blocking area and surrounding the hole area, a second blocking dam located on one side of the first blocking dam close to the hole area and surrounding the hole area, a heightening layer located between the first blocking dam and the second blocking dam, a crack detect wire located on one side of the second blocking dam close to the hole area, at least two connection leading wires leading the crack detect wire out to the display area through the blocking area; in a direction perpendicular to a plane where the display panel is located, an orthographic projection of an area between the connection leading wires has an overlap area with an orthographic projection of the heightening layer.