Sensing Device Reflector Segmentation for Electrostatic Stability

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional sensing devices with suspended structures in the sensing layer face issues with electrostatic field attraction, leading to tilting of the sensing layer, heat dissipation, and subsequent degradation of sensing signals and effects.

Innovation Solution

The proposed sensing device incorporates a substrate with a circuit layer, a reflector with separated reflection parts, and a sensing element with absorbing parts, where the first absorbing part and the second reflection part, and the second absorbing part and the first reflection part, are not overlapped, reducing electrostatic attraction and improving heat dissipation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the sensing layer is designed as a suspended structure to reduce heat conduction impact, then heat dissipation is improved, but electrostatic field attraction causes the sensing layer to tilt, degrading sensing signal and effect

Engineering Contradiction:

Improveheat dissipationVSAvoidsensing signal stability

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The reflector is divided into multiple separated reflection parts (first reflection part, second reflection part, etc.) that are spatially distributed. This segmentation allows the reflector to maintain electrical connection with the sensing layer while reducing continuous electrostatic attraction, preventing tilting and maintaining sensing signal stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the sensing device have different structural characteristics. The sensing layer is suspended only in specific areas where heat conduction needs to be reduced, while maintaining structural support in other regions. The reflector parts are strategically positioned to provide local electrostatic field management.

Inventive Principle:

Principle #3Local quality

2Loss of energy

If the sensing layer is suspended to reduce heat conduction, then thermal isolation is improved, but electrostatic attraction tilts the sensing layer causing sensing effect degradation

Engineering Contradiction:

Improveheat lossVSAvoidsensing effect

Core Design Contradiction:

Loss of energyVSMeasurement precision

Solution Approach 1:

The reflector acts as an intermediary structure between the sensing layer and the substrate. It provides electrical connection and electrostatic field management while allowing the sensing layer to remain suspended for thermal isolation. The separated reflection parts mediate the electrostatic interaction to prevent tilting.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Stability of the object's composition

If the sensing layer is made suspended to improve thermal isolation, then heat dissipation performance is enhanced, but electrostatic field attraction causes tilting and affects sensing signal

Engineering Contradiction:

Improvethermal isolationVSAvoidsensing layer structure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The reflector serves multiple functions simultaneously: it provides electrical connection to the sensing layer, creates controlled electrostatic fields to prevent tilting, enables heat dissipation through its separated structure, and maintains the suspended configuration of the sensing layer. This multi-functionality reduces the need for additional separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 reduces electrostatic attraction, enhances heat dissipation, and improves the sensing effect by maintaining the stability and accuracy of the sensing signals.

Implementation Method 1

a reflector disposed on the circuit layer and comprising a first reflection part and a second reflection part separated from each other

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 2

the sensing element comprises a first absorbing part, a second absorbing part and a sensing part disposed on the first absorbing part and the second absorbing part

Methodology Applied

Scientific EffectAbsorption: Absorption (EM radiation)

Implementation Method 3

an electrostatic field attraction may be generated between the sensing layer and the traces under the suspended structure, causing the sensing layer to tilt

Methodology Applied

Scientific EffectElectrostatic field: Electrostatics

Data Source

PatentUS20250076123A1Sensing device

Publication Date: 2025.03.06 INNOLUX CORP

AI summary

A sensing device is provided, which comprises: a substrate; a circuit layer disposed on the substrate, the circuit layer comprising a switch element; a reflector disposed on the circuit layer, the reflector comprising a first reflection part and a second reflection part separated from each other, wherein the first reflection part is electrically connected to the switch element, and the second reflection part receives a voltage; and a sensing element disposed on the reflector, the sensing element separated from the reflector by a gap, wherein the sensing element comprises a first absorbing part, a second absorbing part and a sensing part disposed on the first absorbing part and the second absorbing part; wherein in a normal direction of the sensing device, the first absorbing part and the second reflection part are not overlapped, and the second absorbing part and the first reflection part are not overlapped.