Siloxane Undercoat Laminate for Ceramic Coating Adhesion
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Solution Overview
Problem
Existing ceramic coating techniques on resin materials for organic electronic devices face challenges in achieving sufficient adhesion and toughness, leading to short device lifespan and increased CO2 emissions due to frequent device disposal.
Innovation Solution
A laminate structure comprising a layer of organic material, a siloxane compound and metal oxide layer, and a metal oxide layer, where the metal oxide layer has high strength, enhancing adhesion and durability through the use of a siloxane compound undercoat layer in the aerosol deposition method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a ceramic coating is applied to a resin base using the aerosol deposition method, then the coating provides hardness and protective properties, but the adhesion of the ceramic material to the resin base is insufficient
Solution Approach 1:
The patent introduces a siloxane compound layer as an intermediary between the resin base and the ceramic coating layer. This intermediate layer improves adhesion by chemically bonding to both the resin substrate and the metal oxide particles in the ceramic coating, resolving the contradiction between maintaining ceramic hardness and achieving sufficient adhesion.
Solution Approach 2:
The patent creates a composite structure consisting of three distinct layers: the resin base, the siloxane compound intermediate layer containing metal oxide particles, and the ceramic coating layer. This composite material approach allows each layer to contribute its specific properties - the resin provides flexibility, the siloxane layer provides adhesion, and the ceramic layer provides hardness and protection.
2Reliability
If a ceramic coating is applied to a resin base, then the coating provides protective properties, but the toughness of the coating is not matched to the bulk ceramic properties
Solution Approach 1:
The patent applies local quality by creating distinct layers with different properties optimized for their specific functions. The siloxane compound layer provides flexibility and toughness matching to the resin base, while the ceramic coating layer provides hardness and protective properties. Each layer's properties are locally optimized rather than uniform throughout the coating structure.
3Reliability
If ceramic coating is applied to organic electronic devices, then the device gains protective properties, but the coating adversely affects the functions of the device
Solution Approach 1:
The siloxane compound layer acts as an intermediary that protects the organic electronic device functions while enabling ceramic coating application. This intermediate layer is compatible with organic materials and does not interfere with device operation, allowing the ceramic coating to provide protection without adversely affecting device functionality.
4Reliability
If ceramic coating is applied to organic electronic devices, then the device gains protective properties, but the coated ceramic material is easily detached from the base
Solution Approach 1:
The siloxane compound layer serves as a stable intermediary that ensures long-term attachment stability between the ceramic coating and the organic device base. This intermediate layer forms strong chemical bonds with both substrates, preventing easy detachment and ensuring the ceramic coating remains securely attached during device operation and throughout its lifespan.
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 laminate structure provides excellent durability and adhesion, extending the lifespan of organic electronic devices and reducing CO2 emissions by improving the mechanical strength and gas barrier properties of the ceramic coating.
Implementation Method 1
a layer (2) including a siloxane compound and metal oxide, wherein the layer (2) is in contact with the layer (1)
Implementation Method 2
the aerosol deposition method (AD method) has been known as a method for forming a ceramic layer on a surface of a base at room temperature
Data Source
AI summary
To provide a laminate including: a layer (1) including an organic material; a layer (2) including a siloxane compound and metal oxide, where the layer (2) is in contact with the layer (1); and a layer (3) including the metal oxide, where the layer (3) is in contact with the layer (2).