Display Panel Groove Sealing for Narrow-Bezel Moisture Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In narrow-bezel display panels, moisture easily enters between the insulating material layer and the metal trace layer, causing corrosion and reducing sealing performance.
Innovation Solution
The introduction of a first groove structure in the insulating layer of the display panel, where the sealant layer extends into these grooves, effectively blocking moisture passages between the insulating layer and signal lines, and additional groove structures in the light shielding layer to further enhance sealing, including concave portions for the metal layer to reduce moisture intrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the sealant frame width is reduced to achieve narrow bezels, then the display panel achieves narrower bezels, but the sealing performance of the sealant frame deteriorates
Solution Approach 1:
The insulating layer is segmented by forming groove structures that extend through its thickness, creating separate regions that prevent continuous moisture pathways. The sealant layer is segmented into multiple filling portions that independently fill these grooves, creating a segmented sealing system that maintains effectiveness even with reduced overall width.
Solution Approach 2:
The solution addresses the sealing problem not by increasing the horizontal width of the sealant frame, but by utilizing the vertical dimension through groove structures that extend through the insulating layer thickness. This dimensional transition allows sealing to be achieved through depth rather than width, resolving the contradiction between narrow bezels and effective sealing.
2Length of moving object
If the sealant frame width is reduced, then the display panel achieves narrower bezels, but moisture can easily enter from between the insulating material layer and metal trace layer
Solution Approach 1:
The groove structures are formed by removing material from the insulating layer, extracting the potential moisture pathway. By taking out portions of the insulating layer to create grooves, the continuous pathway that would allow moisture ingress is eliminated, preventing moisture from entering between the insulating material layer and metal trace layer.
Solution Approach 2:
The sealant filling portions act as intermediaries that fill the groove structures created in the insulating layer. These intermediary elements create additional sealing barriers within the groove structures, providing extra protection against moisture ingress while maintaining the narrow bezel design.
3Reliability
If groove structures are added to block moisture passages, then sealing performance improves, but device complexity increases
Solution Approach 1:
The groove structures are integrated directly into the insulating layer during its formation process, merging the sealing function with the existing insulating layer structure. The sealant filling portions are combined with the groove structures to form an integrated sealing system, reducing the need for separate, independent sealing components and thereby limiting the increase in device complexity.
Data Source
AI summary
The present application provides a display panel and a display device. The display panel includes a first substrate, a second substrate disposed opposite to the first substrate, and a sealant layer. The first substrate includes a first base, signal lines, and an insulating layer. The first substrate includes a first groove structure extending through the insulating layer in a thickness direction. One side of the sealant layer away from the second substrate extends into the first groove structure and is attached to the first base.