Biometric Card Sensor-Memory Layout Without Wire Connections
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Solution Overview
Problem
User devices, such as biometric cards, are expensive and prone to high failure rates due to the use of wires for connecting electrical components, which complicate manufacturing and introduce parasitic effects.
Innovation Solution
Positioning a fingerprint sensor adjacent to a memory and electrical contacts within a user device, eliminating the need for wires by allowing direct electrical connections through overlapping components and cavities in the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires are used to connect electrical components, then the user device can communicate between components, but the device complexity and manufacturing complexity increase
Solution Approach 1:
The patent merges the fingerprint sensor and memory into a single integrated component structure, where the sensor is positioned directly over the memory within the same cavity. This integration eliminates the need for separate wire connections between these components, reducing device complexity while maintaining communication capability through direct electrical contact.
2Reliability
If wires are used to connect electrical components, then the user device can communicate between components, but the manufacturing complexity increases
Solution Approach 1:
The patent combines multiple components (fingerprint sensor, memory, and their electrical connections) into a single integrated assembly that fits within one cavity. This merging eliminates the need for separate wire routing and connection steps during manufacturing, thereby reducing manufacturing complexity while ensuring reliable electrical connections.
3Reliability
If wires are used to connect electrical components, then the user device can communicate between components, but the cost of manufacturing increases
Solution Approach 1:
The patent integrates the fingerprint sensor and memory into a single compact assembly within one cavity, eliminating the need for separate wire connections. This reduction in component count and connection requirements directly lowers manufacturing costs while maintaining reliable communication between components.
4Device complexity
If components are positioned adjacent to each other, then the number of wires is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent positions the fingerprint sensor directly over the memory within the same cavity, creating a nested arrangement where components are vertically stacked rather than horizontally separated. This nesting approach reduces the need for precise lateral wire routing while maintaining accurate electrical connections through vertical alignment, thereby reducing device complexity without excessively increasing manufacturing precision requirements.
Data Source
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AI summary
Embodiments of the invention are directed to a user device. A fingerprint sensor can be located adjacent to electrical contacts. As a result, both the fingerprint sensor and the electrical contacts can be directly connected to an underlying memory within the user device. The direct connection allows the user device to be free of wires.