Gas Barrier Laminate with Modification-Promoting Layer for Bendability
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Solution Overview
Problem
Gas barrier films with deposited layers formed using chemical vapor deposition exhibit excellent gas barrier capability but inferior bendability, leading to potential cracking and deterioration in gas barrier performance when bent.
Innovation Solution
A gas barrier laminate is created by applying a modification treatment to a polysilazane-based compound layer on a base unit with a modification-promoting layer, which has a moderate gas barrier capability and flexibility, formed using methods like plasma CVD or reactive sputtering, to enhance both gas barrier and bendability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a deposited film is formed using a chemical vapor deposition method, then gas barrier capability is improved, but bendability deteriorates
Solution Approach 1:
The invention uses a composite structure consisting of a base layer, a modification-promoting layer, and a gas barrier layer formed by modifying a polysilazane-based compound layer. This composite material approach combines the gas barrier capability of deposited films with the flexibility of the polysilazane-based compound, resolving the contradiction between gas barrier performance and bendability
Solution Approach 2:
The invention changes the material parameters by using a polysilazane-based compound instead of conventional deposited films, and applies modification treatment to achieve the desired gas barrier capability while maintaining flexibility. The modulus of elasticity is controlled to be less than 30 GPa, optimizing both gas barrier and bendability properties
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 achieves excellent gas barrier capability and bendability, preventing cracks and maintaining performance even when flexed, suitable for applications like liquid crystal displays and organic EL displays.
Implementation Method 1
the modification-promoting layer that is provided on the base and exhibits a moderate gas barrier capability and flexibility
Implementation Method 2
the gas barrier layer being formed by applying a modification treatment to the surface of a layer that includes a polysilazane-based compound
Implementation Method 3
the modification-promoting layer having a modulus of elasticity at 23° C. of less than 30 GPa
Data Source
AI summary
The present invention is a gas barrier laminate comprising a base unit that comprises a base and a modification-promoting layer, and a gas barrier layer that is formed on a side of the modification-promoting layer with respect to the base unit,the modification-promoting layer having a modulus of elasticity at 23° C. of less than 30 GPa,the base unit having a water vapor transmission rate at a temperature of 40° C. and a relative humidity of 90% of 1.0 g/(m2·day) or less, andthe gas barrier layer being a layer formed by applying a modification treatment to a surface of a layer that comprises a polysilazane-based compound and is formed on the side of the modification-promoting layer with respect to the base unit, anda method for producing the gas barrier laminat, andan electronic device member comprising the gas barrier laminate, andan electronic device comprising the electronic device member.