Screen Module Sealing Structure for Narrow Edge Bending
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Solution Overview
Problem
Existing screen modules in mobile devices require a significant avoidance distance between the display panel layer and the cover plate to ensure connection reliability and structural integrity, leading to increased device size and compromising aesthetic appeal.
Innovation Solution
A terminal device with a screen module design that includes a bending portion of the display panel layer covered by a module sealant, which is cured to provide comprehensive protection, reducing the need for an avoidance distance and enhancing structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sealing jig is used for bonding the frame and bezel, then the sealing structure can be formed, but the inner surface of the frame cannot be cleaned, causing liquid ejection and reducing display quality
Solution Approach 1:
The sealing jig is divided into multiple detachable components including a first jig for the frame, a second jig for the bezel, and a support member. This segmentation allows the jigs to be removed separately after bonding, enabling complete access to the inner surface for cleaning operations while maintaining effective sealing during the bonding process.
Solution Approach 2:
The sealing jig is designed with protrusions that fit into grooves on the inner surfaces of the frame and bezel before bonding occurs. This preliminary positioning action ensures proper alignment and sealing, while the detachable nature of the jig allows it to be removed afterward for subsequent cleaning of the inner surfaces.
2Reliability
If the bonding area is increased to improve sealing, then sealing reliability improves, but the jig design becomes more complex and cleaning access is reduced
Solution Approach 1:
Rather than using a single complex large-area jig, the bonding system uses multiple smaller detachable jigs that can be positioned at different locations. This segmentation achieves comprehensive bonding coverage while keeping each individual jig simple in design and easy to manufacture.
Solution Approach 2:
The detachable sealing jig components are designed with standardized features that allow them to be used across different bonding positions and configurations. This multi-functionality reduces overall system complexity while maintaining effective sealing across the entire bonding area.
3Reliability
If the sealing jig remains in place during liquid crystal injection, then sealing is maintained, but liquid crystal may be injected onto the jig surface causing contamination
Solution Approach 1:
The sealing jig is designed to be temporarily removed from the bonding position during the liquid crystal injection process. This extraction allows liquid crystal to be injected directly onto the display panel without risk of contamination from the jig surface, while the jig can be repositioned to maintain sealing when needed.
Solution Approach 2:
A support member acts as an intermediary during the injection process, providing temporary support to the frame or bezel when the sealing jig is removed. This allows the jig to be taken out for contamination-free injection while maintaining structural support and sealing integrity.
Data Source
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AI summary
This application provides a terminal device and a seal jig for manufacturing a screen module, to resolve a technical problem of reducing an avoidance distance on an edge of the screen module. The terminal device provided in this application includes: a screen module. The screen module includes a support layer, a display panel layer arranged above the support layer, a cover plate arranged above the display panel layer, and a module sealant. An edge of the display panel layer includes a bending portion. The bending portion first extends toward a direction away from the cover plate and away from a center of the screen module, and then extends toward a direction away from the cover plate and closer to the center of the screen module, to enable the display panel layer to be bent from above the support layer around an edge of the support layer to below the support layer. The module sealant is arranged in a gap between the bending portion and the support layer. The module sealant is further arranged on a side of the bending portion facing away from the support layer. One end of the module sealant is connected to a surface of the cover plate facing toward the display panel layer, and an other end extends, to below the display panel layer, toward a direction away from the cover plate.