Glass-Body Metal Card Structure for High-Transmittance 3D Patterns
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Solution Overview
Problem
Conventional credit cards made of plastic materials lack a significant three-dimensional effect due to the low transmittance of plastic sheets, which diminishes the visual appeal and aesthetic value.
Innovation Solution
A metal card with a glass body featuring a UV 3D pattern layer, deposition layer, and light-blocking layer, along with a frame and rear metal bodies, to enhance the three-dimensional effect and provide a luxurious appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic sheet is used to form the card body, then the manufacturing process is simple and cost-effective, but the transmittance is low which reduces the three-dimensional effect of patterns
Solution Approach 1:
The patent uses a composite structure combining glass body with metal frame and metal back cover. The glass body provides high transmittance to enhance the three-dimensional effect of patterns, while the metal components provide structural strength and premium appearance. This composite material approach resolves the contradiction by selecting materials that excel in different properties rather than relying on a single material to satisfy all requirements.
2Illumination intensity
If a glass body is used to enhance transmittance and three-dimensional effect, then the visual appeal is improved, but the device complexity increases due to additional components and assembly steps
Solution Approach 1:
The card is divided into distinct functional segments: glass body for optical properties, metal frame for structural support, metal back cover for protection and aesthetics, and separate pattern layers. This segmentation allows each component to be optimized independently and assembled through standardized processes, managing complexity through modularity rather than monolithic design.
Solution Approach 2:
The patent employs a nested structure where the glass body with pattern layers is inserted into the metal frame, and the metal back cover is attached to the rear. The antenna module is embedded within the back cover assembly. This nesting approach consolidates multiple components into a compact hierarchical structure, reducing overall complexity while maintaining functional benefits of each material.
3Ease of manufacture
If conventional plastic materials are used, then the manufacturing process is straightforward, but the aesthetic value and luxurious appearance are limited
Solution Approach 1:
The combination of glass and metal materials creates a premium aesthetic that plastic alone cannot achieve. The glass body provides clarity and light interaction, while metal components add weight, texture, and luxurious feel. This material upgrade directly addresses the aesthetic limitation while maintaining manufacturing feasibility through established composite assembly techniques.
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 metal card with a glass body achieves a more pronounced three-dimensional pattern and luxurious appearance, enhancing user experience and aesthetic appeal compared to conventional plastic cards.
Implementation Method 1
a UV 3D pattern layer formed by a three-dimensional pattern composed of a UV-curable material on a surface of the printed layer
Implementation Method 2
a deposition layer having a multilayer structure, formed by sequentially depositing different materials on a surface of the pattern of the UV 3D pattern layer
Data Source
AI summary
A metal card includes a frame metal body formed of a metal plate having a card size and being provided with an glass body insertion space and a first chip insertion hole; a glass body inserted into the glass body insertion space and being formed of a sheet made of a glass material; a 3D pattern printed layer disposed between the glass body and the frame metal body, the 3D pattern printed layer including a printed layer, a UV 3D pattern layer, a deposition layer and a light-blocking layer; an EMI absorption sheet disposed on a rear surface of the frame metal body; an antenna inlay sheet having an antenna mounted on a surface thereof and disposed on a rear surface of the EMI absorption sheet; a rear printing sheet disposed on a rear surface of the antenna inlay sheet; and an IC module for a card.