Decoration Member With Optical Interference for 3D Color Patterns
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Solution Overview
Problem
Existing decoration films for mobile devices and electronic products struggle to express a variety of colors and brightness changes on a single surface, particularly when depicting three-dimensional patterns, and the color appearance is fixed and limited to slight variations with changes in viewing angle.
Innovation Solution
A decoration member with a substrate and a decoration layer featuring a five-layer structure, including light reflection and absorption layers, designed to create dynamic color and brightness changes through constructive and destructive interference, allowing for multiple colors to be expressed in three-dimensional patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If printing or deposition method is used to express colors on decoration film, then color expression is achieved, but the ability to express heterogeneous colors on a single surface and three-dimensional patterns is limited
Solution Approach 1:
The patent employs a five-layer inorganic structure that utilizes optical interference to produce color changes. The layers include light reflection layers and light absorption layers with specific thicknesses (e.g., 1-100 nm each) that create constructive and destructive interference patterns, enabling multiple colors to be expressed on a single surface without complex printing processes.
Solution Approach 2:
The decoration film uses a composite inorganic layer structure consisting of five alternating layers of light reflection and light absorption materials. This composite structure creates optical interference effects that enable diverse color expression while maintaining a simple manufacturing process, resolving the contradiction between color versatility and process complexity.
2Stability of the object's composition
If fixed color is applied to decoration film, then color consistency is maintained, but the ability to show color and brightness changes with viewing angle is limited
Solution Approach 1:
The patent creates a dynamic color effect where the appearance of the decoration film changes based on viewing angle and lighting conditions. The five-layer inorganic structure produces optical interference that causes color and brightness variations when observed from different angles, transforming the static color into a dynamic property that adapts to viewing conditions.
Solution Approach 2:
The inorganic layer structure is specifically designed to produce color changes through optical interference. The thickness and material composition of each layer are optimized to create constructive and destructive interference patterns that result in different color perceptions at different viewing angles, while maintaining compositional stability.
3Adaptability or versatility
If multiple printing layers are used to express heterogeneous colors, then color diversity is improved, but the difficulty to apply colors to three-dimensional patterns increases
Solution Approach 1:
The patent uses a single-layer inorganic structure that produces multiple colors through optical interference rather than requiring multiple printing layers. The five-layer structure with specific thicknesses creates different color reflections at different angles, enabling heterogeneous color expression on three-dimensional patterns without the complexity of multiple printing processes.
Solution Approach 2:
The patent replaces the mechanical printing process with an optical interference-based color expression system. Instead of physically applying multiple layers of different colors through printing, the invention uses a thin inorganic structure where optical interference creates the appearance of multiple colors, significantly simplifying the manufacturing process especially for three-dimensional surfaces.
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 decoration member achieves significant changes in color and brightness across different regions, providing a more dynamic and visually engaging appearance with adjustable color expression based on thickness variations and interference phenomena.
Implementation Method 1
designed to create dynamic color and brightness changes through constructive and destructive interference
Implementation Method 2
designed to create dynamic color and brightness changes through constructive and destructive interference
Implementation Method 3
a decoration layer provided on the substrate, wherein... light reflection and absorption layers
Implementation Method 4
light reflection and absorption layers
Data Source
Figure 1
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AI summary
This specification relates to a decoration member including: a substrate; and a decoration layer provided on the substrate in which there are one or more combinations of viewing angles θ and ϕ in which a contrast parameter Cn represented by Equation 1 is 0.1 or more.