Polymeric Coating for Composite Pane Electrical Components

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Solution Overview

Problem

Existing composite panes for automotive applications face challenges in minimizing the risk of short-circuits due to the size and spacing of electrical components and conductive tracks, which also affect the visual appearance and performance of the glazing.

Innovation Solution

A composite pane with integrated electrical components is developed, where at least one portion of the exposed surface of the electrical component and optionally the conductive track is completely covered by a polymeric protective coating, reducing the risk of short-circuits and enhancing environmental protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the size and spacing of electrical components and conductive tracks are minimized to achieve maximum transparent area, then the visual appearance and transparency of the glazing are improved, but the risk of short-circuits increases

Engineering Contradiction:

Improvetransparent areaVSAvoidrisk of short-circuits

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

A polymeric protective coating is applied as an intermediary layer between electrical components/conductive tracks and the surrounding environment. This coating layer provides electrical insulation while allowing the components to be positioned closer together, thus resolving the contradiction between minimizing spacing for transparency and preventing short-circuits for reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

A thin polymeric protective coating is applied over the electrical components and conductive tracks. This thin film provides the necessary electrical insulation to prevent short-circuits while being thin enough to maintain the overall transparency and aesthetic appearance of the glazing, allowing closer component spacing.

Inventive Principle:

Principle #30Flexible shells and thin films

2Area of stationary object

If electrical components are integrated within the thermoplastic interlayer to maximize transparent area, then the visual appearance is improved, but the components become more vulnerable to environmental stress and chemical attacks

Engineering Contradiction:

Improvetransparent areaVSAvoidenvironmental stress and chemical attacks

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The polymeric protective coating is applied beforehand to electrical components before they are integrated into the thermoplastic interlayer. This protective layer acts as a cushioning barrier that shields the components from environmental stress and chemical attacks, allowing them to be positioned in the transparent area without increased vulnerability.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The solution combines multiple materials with complementary properties: the thermoplastic interlayer provides structural integration and basic protection, while the polymeric protective coating provides enhanced chemical resistance and environmental protection. This composite material approach allows components to be integrated in the transparent area while protecting them from harmful factors.

Inventive Principle:

Principle #40Composite materials

3Area of stationary object

If conductor spacing is reduced to minimize component size and maximize transparent area, then the aesthetic appeal is improved, but the risk of short-circuits increases

Engineering Contradiction:

Improvetransparent areaVSAvoidrisk of short-circuits

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The polymeric protective coating serves as an intermediary insulating layer between conductors, enabling reduced spacing while maintaining electrical isolation. This allows conductor spacing to be minimized for aesthetic appeal and maximum transparent area without increasing the risk of short-circuits, as the coating provides the necessary electrical insulation.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 application of a polymeric protective coating significantly minimizes the risk of short-circuits, allows for closer conductor spacing, and protects the electrical components against environmental stress and chemical attacks, while maintaining the transparency and aesthetic appeal of the glazing.

Implementation Method 1

at least one portion of the exposed surface of the electrical component and optionally the conductive track is completely covered by a polymeric protective coating

Methodology Applied

Scientific EffectProtective coating: Coatings

Data Source

PatentUS12319031B2Composite pane comprising electrical component with protective coating

Publication Date: 2025.06.03 SAINT GOBAIN SEKURIT FRANCE

AI summary

A composite pane with at least one integrated electrical component includes an outer pane with an outer face and an inner face, an inner pane with an outer face and an inner face, wherein the inner face of the outer pane and the inner face of the inner pane are connected by a thermoplastic interlayer, wherein the electrical component is integrated between the inner face of the outer pane and the inner face of the inner pane and electrically contacted by at least one conductive track, wherein at least one portion of the exposed surface of the electrical component and optionally at least one portion of the exposed surface of the conductive track is continuously covered by a polymeric protective coating.