Flexible Printed Circuit Board Segmentation for Sensor Adaptability
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Solution Overview
Problem
Existing detection devices for biological information, such as fingerprint and vascular pattern detection, face challenges in adapting to various use conditions and application portions, requiring an optimal configuration that can accommodate differences in subject physique and settings like clinical environments or exercise scenarios.
Innovation Solution
A detection device comprising a sensor substrate with photosensors, a control board, and a flexible printed circuit board with cutting indication lines, allowing the length between the sensor substrate and the circuit board to be adjusted, enabling flexible coupling and optimal configuration for different applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the FPC board length is fixed for a specific application, then the device configuration is simplified and manufacturing is easier, but the device cannot adapt to various use conditions and application portions
Solution Approach 1:
The FPC board is divided into multiple sections with cutting indication lines, allowing the board to be segmented into different lengths based on application requirements. This segmentation enables the same base design to serve multiple purposes without requiring entirely different configurations for each application.
Solution Approach 2:
The FPC board length is made adjustable rather than fixed, allowing the configuration to change dynamically based on the specific application. The cutting indication lines provide predetermined options for adjusting the board length to match different use conditions and application portions.
2Adaptability or versatility
If the FPC board length is extended to accommodate different applications, then adaptability improves, but signal loss and detection sensitivity deteriorate
Solution Approach 1:
By segmenting the FPC board with cutting indication lines, the system allows selection of the minimum necessary length for each application. This prevents unnecessary extension of the board, thereby maintaining signal integrity while still providing adaptability across different applications.
Solution Approach 2:
The FPC board length parameter can be changed based on application requirements, but only within optimized ranges that maintain signal reliability. The cutting indication lines provide predetermined length options that balance adaptability with signal transmission quality.
3Adaptability or versatility
If multiple FPC board lengths are prepared for different applications, then adaptability improves, but manufacturing complexity and inventory management worsen
Solution Approach 1:
Instead of manufacturing multiple complete FPC boards of different lengths, the system manufactures one standard-length FPC board with cutting indication lines that can be segmented as needed. This approach simplifies manufacturing by standardizing the base product while providing customization through simple cutting operations.
Solution Approach 2:
A single FPC board design with cutting indication lines serves multiple functions and applications. The universal base design can be adapted to various application portions through selective cutting, eliminating the need to maintain separate manufacturing processes and inventory for different board lengths.
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 solution enables the detection device to effectively detect various biological information types across diverse use conditions and application portions, improving adaptability and sensitivity by optimizing the length of the flexible printed circuit board.
Implementation Method 1
sensor substrate provided with a plurality of photosensors
Data Source
AI summary
A detection device includes a sensor substrate provided with a plurality of photosensors, a control board provided with a control circuit configured to control the photosensors, and a flexible printed circuit board provided with wiring configured to electrically couple the sensor substrate to the control board. The flexible printed circuit board is provided with a plurality of cutting indication lines for changing a length between the sensor substrate and the flexible printed circuit board.