Quantum Dot Electronic Device Barrier Sheet
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gas barrier layers in electronic devices, especially those containing aluminum oxide particles and phosphorus compounds, deteriorate over time and fail to maintain effective barrier properties under hot and humid conditions, leading to degradation of fluorescent quantum dots due to oxygen and water exposure.
Innovation Solution
A fluorescent quantum dot-containing electronic device with a protective sheet featuring a multilayer structure comprising a base and a layer containing a reaction product of an aluminum-containing compound and a phosphorus compound, where the reaction product has an average particle diameter of 5 to 50 nm, providing enhanced barrier and optical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional gas barrier layer containing aluminum oxide particles and phosphorus compound is used, then initial barrier performance is achieved, but gas barrier properties deteriorate over time under hot and humid conditions
Solution Approach 1:
The patent changes the particle size parameter of the reaction product to a specific range (5-50 nm average diameter) and controls the molecular weight of the phosphorus compound (5,000-500,000), which fundamentally alters the barrier layer's performance characteristics and long-term stability under humid conditions
Solution Approach 2:
The patent creates a composite barrier layer by reacting aluminum-containing compound with phosphorus compound to form a reaction product with specific properties, combining the benefits of both materials while achieving superior and stable gas barrier performance that resists deterioration over time
2Stability of the object's composition
If fluorescent quantum dots are dispersed in a resin, then quantum dots can be protected from aggregation, but they remain vulnerable to degradation by atmospheric oxygen and water
Solution Approach 1:
The patent introduces a protective sheet as an intermediary barrier between the quantum dots dispersed in resin and the harmful atmospheric environment. This protective sheet, containing the reaction product layer, mediates the interaction by blocking oxygen and water while allowing the quantum dots to maintain their dispersed state without direct exposure to degrading factors
3Reliability
If a protective sheet with multilayer structure including reaction product of aluminum-containing compound and phosphorus compound is used, then barrier performance and optical properties are maintained after damp heat test
Solution Approach 1:
The protective sheet is segmented into multiple functional layers: a base layer and a reaction product layer with specific characteristics. This segmentation allows each layer to perform its specific function - the base provides structural support while the reaction product layer provides enhanced gas barrier properties, achieving high reliability without excessive complexity
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 solution ensures the electronic device maintains high barrier performance and optical properties both before and after a damp heat test, effectively resisting degradation by atmospheric oxygen and water, with the device retaining performance for extended periods, such as 2,000 consecutive hours.
Implementation Method 1
the layer (Y) contains a reaction product (D) of an aluminum-containing compound (A) and a phosphorus compound (B)
Implementation Method 2
the reaction product (D) has an average particle diameter of 5 to 50 nm
Data Source
AI summary
The present invention relates to a fluorescent quantum dot-containing electronic device including a protective sheet. The protective sheet includes a multilayer structure (W) including a base (X) and a layer (Y) stacked on the base (X), the layer (Y) contains a reaction product (D) of an aluminum-containing compound (A) and a phosphorus compound (B), and the reaction product (D) has an average particle diameter of 5 to 50 nm.