Resin Layer Dyeing for Electronic Device Housing Color Gradients
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Solution Overview
Problem
Current methods for achieving a color gradient effect on electronic device housings, such as electroplating and screen-printing ink, face challenges with precision control, high costs, low yield, and fading under solar radiation due to complex film structures and limitations in hole sizes.
Innovation Solution
A method involving a resin layer formed on a matrix, where the resin layer is dyed to create a color gradient effect, using materials like acrylic, polyurethane, or epoxy resin, with controlled dye application and lifting speeds to achieve a stable and visually appealing color gradient without fading, and incorporating a texture pattern for enhanced appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If electroplating or screen-printing ink methods are used to achieve color gradient effect, then the electronic device housing can have a colorful appearance, but the manufacturing precision and yield are low due to complex film structures and hole size limitations
Solution Approach 1:
The patent changes the fundamental parameters of the dyeing process by using a resin layer with controlled thickness (5-50 μm) and applying dye concentration gradients through controlled lifting speeds during immersion dyeing. This approach replaces the complex multilayer film structures of electroplating with a simpler single-layer resin system that allows continuous color variation, thereby improving both manufacturing precision and yield.
Solution Approach 2:
The patent extracts the color gradient function from complex electroplating or screen-printing processes and implements it through a simplified resin layer dyeing system. By removing the need for precise hole size control and multilayer film deposition, the invention achieves color gradient effects with higher manufacturing precision and better production yield.
2Reliability
If conventional dyeing methods are used on plastic or glass housings, then the housing can have a specific color, but the dye bonding is not firm and fading occurs under solar radiation
Solution Approach 1:
The patent introduces a resin layer as an intermediary between the matrix (plastic or glass housing) and the dye. This resin layer serves as a bonding medium that firmly attaches the dye to the substrate, preventing fading under solar radiation. The resin layer materials (acrylic, polyurethane, or epoxy) are specifically selected for their bonding properties and resistance to UV degradation.
Solution Approach 2:
The patent uses composite material structure consisting of the matrix combined with a resin layer coating. This composite structure leverages the bonding properties of the resin layer to ensure firm dye attachment and resistance to fading, while maintaining the structural properties of the original matrix material.
3Reliability
If a resin layer is formed on the matrix surface to improve dye bonding, then the dye and plate bond firmly without fading, but the manufacturing process becomes more complex
Solution Approach 1:
The patent controls the resin layer thickness within a specific range (5-50 μm) to balance dye bonding performance with manufacturing simplicity. By optimizing this parameter, the process achieves firm dye bonding without requiring excessively complex manufacturing steps. The controlled lifting speed during immersion dyeing also simplifies the process by enabling automatic color gradient formation.
Solution Approach 2:
The patent applies local quality by forming the resin layer only on the surface of the matrix where dye bonding is needed, rather than modifying the entire housing structure. This localized approach maintains manufacturing simplicity while achieving the desired dye bonding stability and fade resistance.
4Manufacturing precision
If the matrix is lifted out of the dye-containing solution at controlled speeds to create color gradient, then the color gradient effect is achieved, but the manufacturing time increases
Solution Approach 1:
The patent uses dynamic control of the lifting speed during the dyeing process to create the color gradient effect. By varying the lifting speed, the patent achieves different dye concentrations in different regions of the resin layer, creating the desired color gradient. This dynamic approach allows for precise color control without requiring multiple separate dyeing steps, thereby managing the coloring time efficiently.
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 method results in a plate with a high yield, low costs, and a durable color gradient effect that remains stable under solar radiation, facilitating the production of electronic device housings with a visually appealing and cost-effective appearance.
Implementation Method 1
a dye is at least contained in a surface of a side, away from the matrix, of the resin layer, and dye content slightly varies at different positions of the resin layer
Implementation Method 2
dye content slightly varies at different positions of the resin layer
Data Source
Figure 1~2
AI summary
This application provides a plate, a method for manufacturing same, and an electronic device. The method includes: forming a resin layer on a surface of a matrix, where the matrix is formed from organic matter, and a material forming the resin layer is different from a material forming the matrix; immersing the matrix in a first solution, the first solution containing a dye; and lifting the matrix formed with the resin layer out of the solution, where a height by which the matrix is lifted out of the solution per minute is not greater than 180 mm.