Optical Fingerprint Module Layout Using Speaker Enclosure Space
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Solution Overview
Problem
Increasing the fingerprint recognition area in optical fingerprint recognition devices while ensuring sufficient mounting space in electronic devices is challenging.
Innovation Solution
Integrating multiple optical fingerprint recognition devices within a speaker enclosure to enhance the fingerprint recognition area and secure mounting space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the fingerprint recognition area is increased by adding more optical fingerprint recognition devices, then fingerprint recognition performance and security performance are improved, but the mounting space required in the electronic device increases
Solution Approach 1:
The patent combines the optical fingerprint recognition device with the speaker enclosure by positioning the fingerprint recognition area on the inner surface of the speaker enclosure. This merging allows the speaker enclosure to serve dual purposes: acoustic output and biometric authentication, thereby increasing fingerprint recognition performance without requiring additional separate mounting space for the recognition device
Solution Approach 2:
The speaker enclosure is designed to perform multiple functions: it serves as both the acoustic chamber for sound output and as the housing for the optical fingerprint recognition device. The inner surface of the speaker enclosure is utilized for fingerprint recognition, making the speaker enclosure a multi-functional component that reduces overall device complexity and space requirements
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
Improves fingerprint recognition performance and security while maintaining the structural integrity of the electronic device by utilizing the speaker enclosure for additional recognition devices.
Implementation Method 1
The optical fingerprint recognition device may perform biometric authentication of a user by detecting light emitted from a display, reflected from a fingerprint, and then entering the recognition device
Data Source
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AI summary
An electronic device including a biometric authentication device may comprise: a display; a substrate assembly; a speaker enclosure which includes at least a part of a fingerprint recognition region; a first support member which supports at least a part of the substrate assembly and the display; and a second support member which supports at least a part of the speaker enclosure and the substrate assembly, wherein: the first support member includes an opening corresponding to the fingerprint recognition region; and the fingerprint recognition region includes a plurality of lenses which are spaced a first distance apart from the rear surface of the display, and a plurality of image sensors which are spaced a second distance apart from the plurality of lenses.