Polysiloxane Elastomer Liquid Crystal Lateral Chain Passive Temperature Sensing

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Solution Overview

Problem

Current smart watches with temperature measurement modules experience increased power consumption and reduced battery life, leading to unfavorable conditions for continuous health status monitoring.

Innovation Solution

A polysiloxane elastomer with a liquid crystal lateral chain is developed, which is crosslinked using a binaphthyl diol p-alkenyloxybenzoate crosslinking agent and cholesterol p-alkenyloxybenzoate liquid crystalline monomer, integrated into a thermosensitive liquid crystal display module that does not require power for temperature sensing, using a transparent non-thermal-conductive material layer and a thermal conductive material layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a temperature measurement module is added to the smart watch, then temperature monitoring function is improved, but power consumption increases and battery life decreases

Engineering Contradiction:

Improvetemperature monitoring functionVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent replaces the electronic temperature sensor system with a liquid crystal-based temperature sensing system. The liquid crystal material directly responds to temperature changes through molecular reorientation, causing visible color changes that can be detected optically, eliminating the need for electronic sensors and power consumption for temperature measurement

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes the thermochromic properties of liquid crystal materials that change color in response to temperature variations. The liquid crystal lateral chain polysiloxane elastomer exhibits different optical properties at different temperatures, allowing temperature monitoring through color observation without requiring active electronic components or power supply

Inventive Principle:

Principle #32Color changes

2Adaptability or versatility

If a temperature measurement module is added to the smart watch, then temperature monitoring function is improved, but battery life decreases

Engineering Contradiction:

Improvetemperature monitoring functionVSAvoidbattery life

Core Design Contradiction:

Adaptability or versatilityVSDuration of action of stationary object

Solution Approach 1:

The liquid crystal temperature sensing system is self-powered and self-indicating. The material autonomously responds to temperature changes through its inherent thermochromic properties, requiring no external power supply or active electronic components. The color change provides direct visual feedback, making the system self-sufficient and eliminating battery drain

Inventive Principle:

Principle #25Self-service

3Productivity

If continuous temperature monitoring is implemented, then health status monitoring capability is improved, but power consumption increases

Engineering Contradiction:

Improvehealth status monitoring capabilityVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent replaces continuous electronic sampling and processing with passive optical observation. The liquid crystal material continuously reflects temperature changes through color variations that can be detected by the human eye or simple optical sensors, eliminating the need for continuous power supply to electronic temperature sensors and data processing systems

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical 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 polysiloxane elastomer allows for automatic body temperature sensing without power consumption, enabling continuous health monitoring by changing color in response to temperature changes, thus enhancing the functionality of smart watches without affecting battery life.

Implementation Method 1

The polysiloxane elastomer allows for automatic body temperature sensing without power consumption, enabling continuous health monitoring by changing color in response to temperature changes

Methodology Applied

Scientific EffectThermochromism: Thermochromism

Implementation Method 2

using a transparent non-thermal-conductive material layer and a thermal conductive material layer

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS10130264B2Polysiloxane elastomer containing liquid crystal lateral chain, and smart watch made from the same

Publication Date: 2018.11.20 BOE TECHNOLOGY GROUP CO LTD

AI summary

A polysiloxane elastomer containing liquid crystal lateral chain, and a smart watch made therefrom are disclosed. The polysiloxane elastomer containing liquid crystal lateral chain includes a polysiloxane backbone chain and a lateral chain formed by a liquid crystalline monomer and connected with the polysiloxane backbone chain, wherein the polysiloxane backbone chain is crosslinked by a crosslinking agent.