Electronic Device Housing Double Texture Anodizing
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Solution Overview
Problem
Existing methods for manufacturing electronic device housings with multiple textures, such as matte and glossy surfaces, face challenges in achieving uniform oxide film layers, leading to surface damage, corrosion, and aesthetic issues due to differences in surface roughness and oxide film thickness.
Innovation Solution
A method involving a primary processing step for creating a matte surface, followed by a primary anodizing process, a secondary processing step for creating a glossy surface, and a secondary anodizing process to form a uniform oxide film layer on both surfaces, with an intermediate film-stripping process to ensure consistent thickness and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple anodizing processes are performed to create different textures, then surface texture variety is improved, but oxide film uniformity deteriorates
Solution Approach 1:
A preliminary anodizing process is performed before the main anodizing process to create a base oxide film layer. This preliminary layer serves as a foundation that ensures uniform thickness in the final oxide film, even when multiple textures are created through subsequent processing and anodizing steps.
Solution Approach 2:
A preliminary oxide film layer acts as an intermediary between the metal substrate and the final oxide film. This intermediate layer mediates the formation process, ensuring that the final oxide film achieves uniform thickness across different surface textures by providing a consistent base for further anodizing.
2Shape
If secondary processing is performed to create glossy surface, then surface aesthetic appearance is improved, but surface damage risk increases
Solution Approach 1:
A preliminary oxide film layer is formed before secondary processing to cushion and protect the metal substrate surface during subsequent processing steps. This pre-formed protective layer prevents direct contact between processing tools and the substrate, reducing the risk of surface damage while allowing glossy finishes to be achieved.
3Ease of manufacture
If oxide film layer thickness varies across surfaces, then processing flexibility is improved, but corrosion resistance deteriorates
Solution Approach 1:
The preliminary anodizing process creates a uniform base oxide film across all surfaces before any texture-specific processing. This ensures that even though subsequent processes may create different textures, the underlying oxide film maintains consistent thickness and provides uniform corrosion protection throughout.
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
This approach allows for the creation of electronic device housings with aesthetically pleasing double textures, preventing oxide film peeling and corrosion by ensuring a uniform oxide film layer across the housing surfaces, enhancing durability and appearance.
Implementation Method 1
a primary anodizing process may be performed to form an oxide film layer on the housing surface
Implementation Method 2
forming an oxide film layer using the anodizing process
Data Source
AI summary
Various embodiments of the disclosure provide an electronic device including a housing having a double texture, and a method for manufacturing the same. According to various embodiments disclosed herein, there may be provided an electronic including a housing that includes a first surface having a first surface roughness, a second surface having a second surface roughness different from the first surface, and a first connection portion between the first surface and the second surface. The electronic device may further include an oxide film layer disposed on the first surface, the second surface, and the first connection portion and configured to have a substantially uniform thickness. Various other embodiments may be applied.