Curved Display Adhesion Channel for Mobile Terminals
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Solution Overview
Problem
The challenge in mobile terminals is to maintain a strong coupling between the display unit and the case while minimizing the size of the terminal, as the increased size of the display for better multimedia functionality and the curvature of the display unit make it difficult to apply adhesive uniformly, leading to weakened adhesion.
Innovation Solution
A channel is provided on the seating part of the case to guide and fill adhesive uniformly, preventing it from flowing and ensuring complete adhesion between the display unit and the case, which enhances the adhesion strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display size is increased to provide better multimedia functionality, then the display area is improved, but the terminal size increases and portability deteriorates
Solution Approach 1:
The display unit is designed with a prescribed curvature rather than being flat. This curvature allows the display to maintain a large display area while fitting within a more compact terminal body, improving portability without sacrificing display real estate. The curved display wraps around the terminal's contour, effectively utilizing the available space.
2Volume of moving object
If the terminal size is decreased to facilitate portability, then the compactness is improved, but the contact area between display unit and case is reduced, weakening adhesion
Solution Approach 1:
The case is designed with a prescribed curvature that matches the curved display unit. This curvature allows the case to maintain a compact form factor while providing sufficient surface area for adhesion. The curved geometry enables the adhesive to distribute evenly across the contact area, maintaining strong bonding despite the reduced overall terminal size.
3Ease of operation
If the display unit is given a prescribed curvature to improve user concentration, then the display effectiveness is improved, but the adhesion between display unit and case deteriorates due to difficulty in applying adhesive uniformly
Solution Approach 1:
The case is designed with a prescribed curvature that precisely matches the curvature of the display unit. This geometric matching creates a consistent gap or contact surface between the curved display and the curved case, providing a uniform substrate for adhesive application. The matched curvature ensures that the adhesive layer has consistent thickness and distribution across the entire bonding area, solving the uniformity problem that would exist with a flat case and curved display.
4Volume of moving object
If the contact area between display unit and case is reduced to minimize terminal size, then the compactness is improved, but the coupling strength deteriorates
Solution Approach 1:
The curved geometry of both the display unit and case creates a distributed stress pattern across the adhesion interface. The curvature allows the bonding force to be spread more evenly throughout the contact area, preventing stress concentration at specific points. This distributed stress distribution maintains strong coupling strength even when the overall contact area is reduced, enabling compact terminal design without sacrificing structural integrity.
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A mobile terminal (100) is disclosed, by which a display and a case can be uniformly attached to each other with a reinforced adhesive strength. The present invention includes a case (101, 102), a display unit (151) installed on the case, a seating part (104) provided to the case, the seating part (104) configured to support the display unit (151), and a channel (105) provided to the seating part (104), the channel (105) configured to receive an adhesive (A) for coupling the display unit (151) and the case (101, 102) together. The channel (105) includes a bottom portion (105a), a first wall surface (105b) extending from the bottom portion (105a) and a second wall surface (105c) extending from the bottom portion (105a). The second wall surface (105c) is disposed closer to a center of the case than the first wall surface (105b). And, the second wall surface (105c) tilts at a prescribed angle (θ) toward the center of the case.