Insertable Display Module for Chip Card Mechanical Protection
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Solution Overview
Problem
The production of chip cards with displays is technically elaborate and cost-intensive, as the functional layers of the display are subjected to high pressure during the multi-layer process, leading to potential damage or destruction, and existing solutions are susceptible to mechanical stresses.
Innovation Solution
A module with a contact interface, integrated circuit, and display device is designed to be inserted into a data carrier body such that the contact interface and display device are on opposing sides, allowing for mechanical and/or electronic interconnection, minimizing exposure to bending loads and enabling a compact, robust, and cost-efficient construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the multi-layer process with pressure and heat is used to join plastic foils into a card body, then the card body structure is formed, but the display functional layers are damaged or destroyed due to high pressure load
Solution Approach 1:
The card system is divided into separate functional modules: a card body and a display module. The display module is assembled separately without exposure to high pressure, then inserted into the card body through a through-opening. This segmentation allows the display layers to remain intact while the card body maintains its structural integrity through the multi-layer joining process.
2Ease of manufacture
If the uniform module containing chip module and display is cast together, then electronic interconnection is achieved, but the module is still susceptible to damage from bending loads due to its spatial extension
Solution Approach 1:
The display module is extracted from the card body structure and inserted through a through-opening rather than being cast together. This allows the display module to be a separate, compact unit that can be electronically connected through contacts on the card body surface, reducing its spatial extension and susceptibility to bending damage while maintaining electronic interconnection.
3Device complexity
If the contact area and display area point in the same direction, then the module structure is simpler, but the display area is not easily readable during contact operations
Solution Approach 1:
Instead of having the contact area and display area point in the same direction, the invention inverts this arrangement by positioning them in opposite directions on the card body. The contact interface is on one side while the display area is on the opposite side, making the display easily readable during contact operations without significantly increasing module complexity.
Data Source
AI summary
A module for insertion into a data carrier body to form a data carrier, the module having a contact interface with a contact area, at least one integrated circuit and a display device with a display area which are interconnected. Method for producing the module, the data carrier body and the data carrier. The contact interface and the display device of the module are disposable in the data carrier body such that the contact area of the contact interface and the display area of the display device point in opposite directions. The data carrier body thus possesses a through opening into which the module is insertable as described.