Wearable Sensor Module Rear Plate Light Blocking Coating

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Solution Overview

Problem

Wearable electronic devices face challenges in effectively protecting sensors from light and heat while maintaining accurate biometric data collection, as existing designs often compromise on sensor accuracy due to external interference.

Innovation Solution

The wearable electronic device incorporates a rear plate with insert areas and cover members, featuring a thermal conductive or light-blocking coating layer on side surfaces, housing optical and temperature sensors to enhance data accuracy and reduce interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Difficulty of detecting and measuring

If sensors are exposed to external light and heat for biometric data collection, then measurement capability is improved, but measurement precision deteriorates due to interference

Engineering Contradiction:

Improvesensor measurement capabilityVSAvoidbiometric data accuracy

Core Design Contradiction:

Difficulty of detecting and measuringVSMeasurement precision

Solution Approach 1:

The rear plate is designed with differentiated regions: transparent areas for light transmission to optical sensors, heat-conductive areas for thermal coupling with temperature sensors, and light-blocking areas to prevent interference. This local differentiation allows each sensor type to receive appropriate environmental conditions while protecting against unwanted interference, resolving the contradiction between measurement capability and precision.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The rear plate acts as an intermediary structure between the external environment and the sensors. It mediates light and heat transmission selectively through different regions (transparent and heat-conductive areas) while blocking harmful interference, enabling sensors to function accurately without direct exposure to unfiltered environmental conditions.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a rear plate with transparent areas is used to allow light transmission to sensors, then sensor functionality is improved, but protection from harmful light interference deteriorates

Engineering Contradiction:

Improvesensor functionalityVSAvoidlight interference

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The rear plate incorporates spatially differentiated properties: transparent regions that allow necessary light transmission to optical sensors, while adjacent light-blocking regions prevent harmful light interference. This local quality differentiation enables the plate to simultaneously provide light transmission for sensor functionality and protection from interference.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The rear plate is segmented into functionally distinct areas: transparent areas for light transmission, heat-conductive areas for thermal coupling, and light-blocking areas for interference protection. This segmentation allows each region to perform its specific function independently, resolving the contradiction between enabling sensor functionality and protecting from harmful factors.

Inventive Principle:

Principle #1Segmentation

3Measurement precision

If thermal conductive coating is applied to protect temperature sensors, then measurement accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvetemperature measurement accuracyVSAvoidcoating structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The rear plate utilizes composite material properties by integrating thermal conductive coatings on specific regions. These coatings are applied selectively to areas requiring thermal coupling with temperature sensors, creating a composite structure that combines the base plate material with functional coating layers. This approach improves temperature measurement accuracy while maintaining relatively simple device architecture through targeted material application.

Inventive Principle:

Principle #40Composite materials

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

This configuration improves the accuracy of biometric data collection by shielding sensors from external light and heat, enhancing the reliability of measurements while maintaining a compact and user-friendly design.

Implementation Method 1

A first coating area including at least one of a thermal conductive coating layer or a light-blocking coating layer may be formed on at least a part of at least one of side surfaces of the insert areas

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS20240288835A1Wearable electronic device comprising sensor module

Publication Date: 2024.08.29 SAMSUNG ELECTRONICS CO LTD

AI summary

A wearable electronic device is provided. The wearable electronic device includes a housing, a display disposed on a first surface of the housing, a rear plate disposed on a second surface of the housing opposite the first surface, and a sensor module disposed in the housing. The rear plate includes a first rear plate including insert areas, a second rear plate configured to surround at least a part of the first rear plate, and cover members disposed to close the insert areas. The sensor module includes at least one optical sensor and at least one temperature sensor disposed in spaces surrounded by the insert areas and the cover members. A first coating area including at least one of a thermal conductive coating layer or a light-blocking coating layer is formed on at least a part of at least one of side surfaces of the insert areas.