Curved Surface Mesh Sheet for Electronic Housings
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Solution Overview
Problem
Conventional mesh sheets for electronic device housings with antenna and touch panel functions face issues with metal mesh deformation and breakage when adhered to curved surfaces, particularly those with large curvature, leading to stress-induced destruction.
Innovation Solution
A mesh sheet design featuring metal fine bands laminated on a resin substrate with specific pattern arrangements, including arc-shaped and curved line patterns, to absorb extension stress and prevent breakage, combined with a thermoplastic adhesive for enhanced plasticity and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the mesh sheet is deformed along a curved surface with large curvature, then the mesh sheet can be adhered to the housing surface, but the metal mesh fine bands are broken due to stress
Solution Approach 1:
The mesh sheet is divided into multiple regions: a first region with the metal mesh laminated on the resin sheet, and a second region without the metal mesh. This segmentation allows the mesh sheet to be adhered to curved surfaces while protecting the metal mesh from excessive stress by placing it only where needed for antenna functionality.
Solution Approach 2:
The metal mesh is selectively applied only to the first region where antenna performance is required, while the second region remains free of metal mesh to accommodate curved surface deformation. This local quality approach ensures that the metal mesh is not subjected to stress in areas where it would break, while still maintaining antenna functionality in the first region.
2Measurement precision
If the metal mesh is made with finer bands for better antenna performance, then receiver sensitivity is improved, but the metal mesh becomes more susceptible to breakage during deformation
Solution Approach 1:
By segmenting the mesh sheet into a first region with fine metal mesh for high sensitivity and a second region without metal mesh for durability, the patent resolves the contradiction between fine band performance and breakage susceptibility. The fine metal mesh is protected from deformation stress by limiting its presence to the first region only.
3Shape
If the mesh sheet covers the entire housing surface for aesthetic purposes, then design appearance is improved, but the metal mesh breaks more easily on curved portions
Solution Approach 1:
The patent applies local quality by having the metal mesh present only in the first region where it is needed for antenna function, while the second region lacks metal mesh to prevent breakage. This allows the mesh sheet to be adhered to curved surfaces throughout the housing without compromising metal mesh integrity in the second region.
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
The mesh sheet effectively adheres to curved surfaces without destroying the metal mesh, maintaining functionality and design aesthetics while enhancing receiver sensitivity and reducing directivity.
Implementation Method 1
a thermoplastic adhesive for enhanced plasticity and adhesion
Data Source
Figure 1A
Figure 1B~2
Figure 3~4
AI summary
A mesh sheet of the present invention is a mesh sheet in which a metal mesh comprising fine bands is laminated on a surface of a base substrate, the mesh sheet being used and adhered along a surface of an arbitrary member having a curved surface portion. The metal mesh has a part in which the fine band positioned between connection points of the fine bands which are adjacent to each other is a curved line so as to absorb stress relative to deformation to be placed along the curved surface portion with a large curvature without destructing the metal mesh.