Curved-Screen Frame Bonding With Horizontal Position Limits
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Solution Overview
Problem
The use of foam back glue for bonding curved screens to electronic device frames results in insufficient limiting accuracy and secondary bonding issues due to elasticity, affecting the bonding effect and appearance of the device.
Innovation Solution
Implementing limiting structures on the side frames of the middle frame to prevent horizontal movement of the protective cover plate and curved screen, combined with gap-filling glue to achieve a sealed connection and improve bonding strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If foam back glue is used for bonding curved screens to the middle frame, then the bonding process is simplified, but the limiting accuracy is insufficient and secondary bonding problems occur
Solution Approach 1:
The bonding system is segmented into three parts: limiting structures for positioning, foam back glue for initial bonding, and gap-filling glue for precision sealing. This segmentation allows each component to perform its specific function optimally, resolving the contradiction between process simplicity and limiting accuracy.
Solution Approach 2:
Limiting structures serve as intermediary components between the curved screen and middle frame, providing precise positioning and preventing horizontal movement. This intermediary element enables accurate limiting while maintaining the simplicity of the overall bonding process.
2Ease of operation
If foam back glue is used for bonding curved screens, then the bonding operation is easier, but the foam back glue rebounds during press-fitting causing secondary bonding problems
Solution Approach 1:
Limiting structures are pre-installed on the middle frame before bonding the curved screen. This preliminary action ensures that the curved screen is correctly positioned and prevented from horizontal movement during press-fitting, eliminating secondary bonding problems caused by foam back glue rebound.
Solution Approach 2:
The limiting structures provide preliminary anti-action against the horizontal movement caused by foam back glue rebound during press-fitting. By preventing movement in advance, the system counteracts the harmful effect of glue rebound before it can cause secondary bonding problems.
3Manufacturing precision
If limiting structures are added to improve horizontal limiting precision, then the limiting effect is improved, but the device complexity increases
Solution Approach 1:
Limiting structures are added only at specific locations where horizontal limiting is needed, rather than modifying the entire structure. This localized approach improves horizontal limiting precision while minimizing the increase in overall device complexity.
Solution Approach 2:
The bonding system uses a composite approach combining limiting structures (rigid positioning elements) with foam back glue (flexible bonding material) and gap-filling glue (precise sealing agent). This composite system achieves high limiting precision without excessive structural complexity by leveraging the strengths of different materials and components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances horizontal limiting precision, prevents secondary bonding, and ensures a strong, sealed connection between the curved screen and the frame, improving the bonding success rate and device appearance.
Implementation Method 1
because the foam back glue has a degree of elasticity, on one hand, limiting accuracy for the curved screen is insufficient; and on the other hand, the foam back glue will rebound during press-fitting of the curved screen
Implementation Method 2
by filling, with the glue, the gap between the bonding end surfaces and the curved sides of the protective cover plate, a sealed connection between the curved screen and the middle frame can be achieved
Data Source
Figure 1~2
Figure 3
Figure 4a
AI summary
This application provides an electronic device, including a middle frame and a curved screen. The curved screen includes a display module and a protective cover that is attached to the display module. The middle frame includes two side frames arranged opposite to each other and arranged to correspond to bent areas of the curved screen. An end of each side frame facing toward the curved screen has a bonding end surface, and each bonding end surface is provided with a limiting structure. The two limiting structures help to improve horizontal limiting effect and bonding effect for the protective cover plate and the curved screen. A gap between the bonding end surfaces and curved sides of the protective cover plate is filled with a glue, which enables a sealed connection between the curved screen and the middle frame. This application helps to improve horizontal limiting effect for the protective cover plate and the curved screen and bonding effect for the curved screen.