Fingerprint Reader Nested in Touch Module for Compact Device Design
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Solution Overview
Problem
The challenge in designing smaller and thinner mobile devices with fingerprint identification modules is to balance component configuration and performance, as existing solutions struggle to accommodate the fingerprint reader without increasing device size or compromising identification accuracy.
Innovation Solution
The electronic device incorporates a fingerprint reader positioned on the touch module, with a display module located underneath, allowing the fingerprint reader to overlap orthogonally with the display module, thereby enabling flexible configuration and increased internal space without enlarging the device, while maintaining effective fingerprint identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fingerprint reader is added to the mobile device, then the fingerprint identification function is improved, but the device size increases
Solution Approach 1:
The fingerprint reader is nested within the touch module structure, utilizing the existing space for fingerprint sensing. The touch module serves as a container that houses both the touch sensing functionality and the fingerprint reader, allowing one function to be embedded within another without increasing the overall device footprint.
Solution Approach 2:
The display module is positioned underneath the touch module in a vertical arrangement, utilizing the Z-dimension (depth/thickness) rather than expanding the XY-plane area. This vertical stacking approach allows the fingerprint reader to be integrated without increasing the device's planar size, instead using the third dimension for component arrangement.
2Volume of moving object
If the device is made smaller and thinner, then the device portability is improved, but the space for functional components is reduced
Solution Approach 1:
The patent transitions from a planar component arrangement to a three-dimensional vertical stacking configuration. The display module is positioned beneath the touch module, utilizing the depth dimension to accommodate functional components. This allows the device to maintain a compact planar footprint while providing sufficient internal space for multiple functional elements including the fingerprint reader.
Solution Approach 2:
Functional components are nested within the existing module structures. The fingerprint reader is integrated into the touch module assembly, and the display module is positioned underneath, creating a compact vertical arrangement. This nesting approach maximizes space utilization without requiring additional planar area, enabling smaller device dimensions while maintaining functional versatility.
3Measurement precision
If the fingerprint reader is positioned on the touch module, then the identification accuracy is improved, but the device structure becomes more complex
Solution Approach 1:
The fingerprint reader is merged with the touch module assembly, combining two functional elements (touch sensing and fingerprint sensing) into a single integrated unit. This merging approach positions the fingerprint reader on the touch module where it can effectively interact with users' fingers during touch operations, improving identification accuracy while sharing the same structural housing to minimize the increase in device complexity.
Data Source
AI summary
The disclosure discloses an electronic device. The electronic device includes a touch module, a fingerprint reader and a display module. The fingerprint reader is disposed on the touch module. The display module is disposed under the touch module. An orthogonal projection of the display module on the fingerprint reader overlaps that of the fingerprint reader.