Method for Producing an Arrangement of Electrically Conductive Layer on a Substrate from a Suspension, as well as Arrangement of Electrically Conductive Layer on a Substrate and its Use

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a method for producing an electrically conductive layer on a substrate using a suspension containing at least two different carbon compounds: one selected from graphite, graphite flakes, graphene, or graphene flakes, and the other being carbon black. By dispersing these materials in a suspension medium and applying them to a substrate (e.g., via inkjet printing), a highly conductive film is formed. The combination of carbon black and graphite or graphene achieves much higher conductivity than using either material alone. The patent also claims related suspensions (e.g., inks, pastes) and their applications, especially in fields requiring printed conductive patterns, such as sensors.

Use CasesContent extracted from patent full text and abstract with AI.

• Printed strain (deformation) sensors for flexible electronics or wearable devices.
• Antistatic coatings for electronic devices or packaging.
• Printed interconnects and electrodes on flexible substrates for printed electronics.
• Electrochemical sensors or biosensors.
• Conductive traces in low-cost circuit manufacturing via inkjet or other deposition techniques.
• Flexible touch panels or conductive films for displays.
• Development of advanced electric inks and pastes for additive manufacturing.

BenefitsContent extracted from patent full text and abstract with AI.

• Much higher electrical conductivity (10x–200x) than films made from only graphite or only carbon black.
• Enables cost-effective and scalable manufacturing via printing processes (e.g., inkjet, spray, or stamping).
• Compatible with flexible substrates, suitable for flexible and wearable devices.
• Reduces reliance on toxic solvents commonly used in graphene/graphite inks.
• Versatility in formulation—can be used as ink, paste, or lacquer, depending on the application needs.
• Improved reliability of printed conductive layers due to synergistic effects between carbon black and graphite/graphene, bridging gaps and lowering resistance.
• Potential for large-area, uniform, and durable conductive coatings.

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Inventors & Applicants

Patent Abstract

The invention relates to a method for producing an assembly comprising an electric carbon compound A selected from the group, graphite, graphite flakes or graphene, graphene flakes; b) selection of carbon black as the second carbon compound B; c) dispersion of the carbon compounds a and B in the suspension agent C; d) application of the carbon compounds A and B to a substrate (1) from the liquid phase for the assembly of an electrically conductive layer (2). The invention also relates to a corresponding assembly formed by an electrically conductive layer on a substrate.