Film Structure for Electronic Device Shell with Texture and Ribbon Layers
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Solution Overview
Problem
Existing electronic device shells lack diversity in pattern styles, with offset printing technologies resulting in single-style patterns that fail to meet user demands for enhanced aesthetic appeal.
Innovation Solution
A film structure comprising a first film assembly with a texture layer and a second film assembly with a ribbon unit, where the texture layer provides a luminant pattern effect and the ribbon unit offers high-resolution color effects, enhancing the mechanical strength and appearance of the shell by combining UV transfer printing and color-band transfer-printing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If offset printing technology is applied to transfer printing patterns, then the electronic device can present patterns, but the pattern style becomes single and lacks diversity
Solution Approach 1:
The film structure is divided into multiple independent assemblies (first film assembly with texture layer, second film assembly with ribbon unit) that can be manufactured separately and then combined. This segmentation allows each assembly to contribute different pattern characteristics, thereby achieving pattern style diversity while maintaining manageable manufacturing complexity for each component
Solution Approach 2:
The patent combines different film assemblies with distinct properties (texture layer for luminant patterns, ribbon unit for high-resolution colors) into a composite structure. This composite approach enables the final film to exhibit multiple pattern styles simultaneously, resolving the contradiction between pattern diversity and structural complexity
2Manufacturing precision
If multiple film assemblies are combined to achieve high-resolution multi-style patterns, then appearance and mechanical strength are improved, but the manufacturing process becomes more complex
Solution Approach 1:
The texture layer and ribbon unit are manufactured as separate pre-assemblies before final combination. The UV transfer printing and color-band transfer printing are performed independently on each assembly, allowing for precise control of pattern resolution in each component while simplifying the overall manufacturing process by breaking it into manageable stages
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 film structure achieves a high-resolution, multi-style pattern with improved luminance and color saturation, providing a better appearance and mechanical strength for electronic device shells, such as mobile phone back covers, with varied luminance effects across different areas.
Implementation Method 1
carrying out UV transfer printing on the surface of a first substrate part to form a first texture layer
Implementation Method 2
carrying out screen printing to form a color layer in an area without the gradient color layer
Implementation Method 3
the second film layer is capable of improving the light intensity effect of the first film layer and refracting light with texture patterns
Data Source
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AI summary
A film structure, a method for manufacturing the film structure, a shell, and an electronic device are disclosed. The film structure includes a first film assembly (100) and a second film assembly (200). The first film assembly (100) includes a first film (110) and a texture layer (120) stacked sequentially. The second film assembly (200) includes a second film (210) and a ribbon unit (220) disposed on the second film (210). The second film assembly (200) is laminated on the first film assembly (100). The ribbon unit (220) is located adjacent to the first film (110), and an orthographic projection of the ribbon unit (220) projected on a plane on which the texture layer (120) is located falls in the texture layer (120).