Fingerprint Sensor Module Layout for Compact Mobile Integration
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Solution Overview
Problem
Existing fingerprint identification apparatuses are bulky, complex, and costly, with low production yield and efficiency, and are prone to malfunctions due to poor sensitivity and ease of counterfeiting.
Innovation Solution
A compact fingerprint identification apparatus with an integrated sensing and control circuit on a base plate, supported by a conductor holder and covered with a dielectric sheet, which reduces the structure and facilitates assembly into mobile terminals, enhancing sensitivity and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional separate packaging of sensing circuit and control circuit is used, then each circuit can be independently designed and manufactured, but the overall structure becomes complicated, size increases, and production cost rises
Solution Approach 1:
The patent merges the sensing circuit and control circuit into a single integrated package structure. The sensing circuit is arranged on the base plate via a support member, while the control circuit is located beneath the sensing circuit, both electrically connected to the base plate. This consolidation reduces structural complexity and simplifies the packaging process while maintaining independent design and manufacturing capabilities.
Solution Approach 2:
The control circuit is positioned beneath the sensing circuit within the same package, creating a nested arrangement where one circuit is housed within the spatial envelope of the other. This nesting approach minimizes the overall package size and reduces structural complexity without requiring separate packaging for each circuit.
2Volume of moving object
If traditional fingerprint identification apparatus is used, then fingerprint recognition function is provided, but the apparatus is large in size and difficult to install in mobile terminals
Solution Approach 1:
The patent combines the sensing circuit, control circuit, and base plate into a single integrated fingerprint identification module. This merging reduces the overall volume of the apparatus and simplifies the installation process in mobile terminals, as the entire fingerprint recognition system can be installed as one compact unit rather than multiple separate components.
3Reliability
If high material technology and module packaging process are used, then fingerprint identification accuracy and security are improved, but production cost increases and production yield decreases
Solution Approach 1:
The patent segments the fingerprint identification apparatus into distinct functional modules: the base plate, the sensing circuit with support member, the control circuit, the conductor holder, and the dielectric cover sheet. This segmentation allows each component to be manufactured and tested independently, improving production yield and efficiency while maintaining high security standards through specialized design of each segment.
Solution Approach 2:
The patent employs specific parameter optimizations in the circuit designs and material selections to achieve high security and accuracy without requiring excessively complex manufacturing processes. By carefully controlling key parameters such as electrical connections, circuit layouts, and material properties, the patent maintains high reliability while improving manufacturability and production efficiency.
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 results in a high-sensitivity, high-accuracy fingerprint identification system with reduced production costs and improved assembly efficiency, while preventing counterfeiting and enhancing user experience.
Implementation Method 1
the sensing circuit collects fingerprints through the dielectric cover sheet pressed by a finger and generates an analog signal
Data Source
AI summary
The present disclosure discloses a fingerprint identification apparatus and a mobile terminal using the same. The fingerprint identification apparatus includes: a fingerprint identification module, including a sensing circuit, a control circuit and a base plate, wherein the sensing circuit is arranged on the base plate via a support member and electrically connected to the base plate, and the control circuit is electrically connected to the base plate and located beneath the sensing circuit. a conductor holder, the conductor holder being provided with a through hole, covering the fingerprint identification module and electrically connected to the base plate; and a dielectric cover sheet, the dielectric cover sheet being assembled in the through hole and connected to the sensing circuit.