Mobile Phone Sensor Module Layout for Compact Biometric Sensing
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Solution Overview
Problem
Integrating various subsystems into a compact and reliable consumer electronic device that can withstand daily use presents technical challenges.
Innovation Solution
A mobile phone design featuring a modular enclosure with a front and rear cover assembly, a housing subassembly, a camera array, and a charging coil, utilizing materials like aluminum and titanium alloys for durability, along with a biometric sensing system and proximity detection, to enhance functionality and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple subsystems (camera array, battery, charging coil, display) are integrated into a compact mobile phone, then device functionality is enhanced, but structural complexity and manufacturing difficulty increase
Solution Approach 1:
The mobile phone enclosure is divided into multiple discrete components: front cover assembly, rear cover assembly, and housing subassembly with lower chassis section. Each component is separately manufactured and then assembled together, allowing complex subsystems (camera array, battery, charging coil) to be integrated into specific modules without complicating the overall structure. The camera array is integrated into the lower chassis section, while the battery and charging coil are positioned in designated cavities, enabling modular assembly of functional units.
2Adaptability or versatility
If multiple subsystems are integrated into a compact mobile phone, then device functionality is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
By segmenting the enclosure into front cover assembly, rear cover assembly, and housing subassembly, each component can be manufactured with standard tolerances. The lower chassis section includes integrated cavities for the camera array, battery, and charging coil, allowing these subsystems to be assembled into the housing subassembly first, then integrated with the cover assemblies. This modular approach reduces the precision requirements compared to manufacturing a single monolithic structure with all subsystems integrated.
3Reliability
If the mobile phone enclosure uses multiple materials (aluminum and titanium alloys), then durability and reliability are improved, but manufacturing complexity increases
Solution Approach 1:
The housing subassembly utilizes composite construction with aluminum alloy and titanium alloy materials. The lower chassis section may incorporate aluminum alloy for structural integrity, while the cover assemblies can use titanium alloy for enhanced durability and corrosion resistance. These different materials are selected based on the specific functional requirements of each component, allowing the mobile phone to achieve high reliability without requiring all components to be made from a single material system.
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 design provides a robust and functional mobile phone with enhanced durability, improved biometric authentication, and proximity detection, while maintaining a compact form factor.
Implementation Method 1
a charging coil positioned between the rear cover and the second side of the lower chassis section, the charging coil configured to wirelessly couple to a charging accessory to receive power for the mobile phone
Data Source
AI summary
A mobile phone may include an enclosure including a housing component and a front cover coupled to the housing component and defining a front exterior surface of the mobile phone. The mobile phone may further include a display positioned below the front cover and a sensor module positioned below a front-facing sensor region of the front cover and including a biometric sensing system. The biometric sensing system may include a first lens, a light emitter positioned below the first lens and configured to emit light onto an object, a second lens, and a light sensor below the second lens and configured to capture an image of the object. The sensor module may further include a proximity sensing system positioned between the first lens of the biometric sensing system and the second lens of the biometric sensing system.