Quantum-dot composite film without barrier layer
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Solution Overview
Problem
Current quantum-dot films for display devices require a barrier layer for water and oxygen resistance, which increases thickness and manufacturing complexity, as well as costs, and limits the application of quantum-dot technology.
Innovation Solution
A quantum-dot composite film is developed without a barrier layer, using a binder and dispersed quantum dots that are made water-resistant and oxygen-resistant through surface treatment, allowing for a thinner film and simplified manufacturing, and incorporating an optical brightness enhancement layer with prisms for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a barrier layer is added to protect quantum dots from water and oxygen, then water and oxygen resistance is improved, but film thickness increases
Solution Approach 1:
The patent applies parameter changes by modifying the surface properties of quantum dots through surface treatment, changing them from hydrophilic to hydrophobic states. This fundamental change in surface parameters enables the quantum dots to inherently resist water and oxygen without requiring additional barrier layers, thus maintaining thin film thickness while achieving the desired protection.
Solution Approach 2:
The patent extracts and removes the barrier layer from the traditional quantum dot film structure. By taking out this unnecessary component and relying instead on surface-treated quantum dots for protection, the design simplifies the film structure, reduces thickness, and eliminates the need for separate protective layers while maintaining reliability.
2Reliability
If a barrier layer is added to protect quantum dots from water and oxygen, then water and oxygen resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent extracts and removes the barrier layer from the manufacturing process, eliminating the steps required to deposit and integrate this protective layer. This simplification reduces manufacturing complexity while the surface treatment of quantum dots provides the necessary protection, achieving both reduced complexity and maintained reliability.
Solution Approach 2:
The patent merges the protection function into the quantum dot surface treatment itself, combining the quantum dot material and its protective surface layer into a single integrated component. This eliminates the need for separate barrier layers and simplifies the manufacturing process by reducing the number of distinct layers and processing steps.
3Reliability
If a barrier layer is added to protect quantum dots from water and oxygen, then water and oxygen resistance is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the barrier layer, eliminating the material costs and manufacturing steps associated with this protective layer. By relying on surface-treated quantum dots instead, the design reduces material expenses and processing costs while maintaining the necessary water and oxygen resistance, thus lowering overall manufacturing cost.
Solution Approach 2:
The patent employs a cost-effective surface treatment approach that can be applied directly to quantum dots during manufacturing. This method uses inexpensive treatment materials and processes that can be integrated into existing production lines, avoiding the need for expensive barrier layer materials and complex multi-step manufacturing processes.
4Length of stationary object
If quantum dots are made water-resistant and oxygen-resistant through surface treatment, then film thickness is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by performing surface treatment on quantum dots during the manufacturing process before the quantum dots are deposited into the film. This advance preparation ensures that the quantum dots are pre-equipped with water and oxygen resistance properties, eliminating the need for subsequent barrier layers and simplifying the overall manufacturing process despite the additional surface treatment step.
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 reduces the thickness and manufacturing complexity of quantum-dot films, lowers costs, and enhances their performance by maintaining water and oxygen resistance without a barrier layer, while enabling direct coating of prisms for simplified production and assembly.
Implementation Method 1
the blue light can be transformed into three colored lights (RGB), the pureness of three colored lights (RGB) of the quantum-dot backlight is higher than that of the LED (Light-emitting diode) backlight
Implementation Method 2
The quantum-dot layer of the quantum-dot film comprises a binder and a plurality of quantum dots dispersed in the binder
Data Source
AI summary
The present invention discloses a quantum-dot composite optical film comprising: a plurality of quantum dots dispersed in the optical film, wherein the plurality of quantum dots are capable of being water-resistant and oxygen-resistant; and a plurality of prisms, disposed over the quantum-dot layer.