Quantum Dot Display Substrate Sealed Tubular Encapsulation
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Solution Overview
Problem
The challenge lies in effectively encapsulating quantum dot materials within display panels to prevent cadmium pollution and material degradation due to oxygen and water exposure, which affects the performance and environmental safety of quantum dot enhanced films used in liquid crystal displays.
Innovation Solution
A display substrate with a sealed tubular space filled with a quantum dot-polymer composite system is created, where quantum dot particles emit specific wavelengths when excited by blue light, and a black matrix is applied to control light transmission, ensuring the quantum dots are securely encapsulated and protected from environmental influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quantum dot materials are applied in a backlight module, then display performance is improved, but cadmium pollution and material degradation occur due to poor encapsulation
Solution Approach 1:
The quantum dot particles are nested within a polymer matrix to form a composite system, which is then encapsulated within sealed tubular spaces in the display substrate. This multi-level nesting structure provides robust protection against environmental factors while maintaining display performance.
Solution Approach 2:
The polymer matrix acts as a flexible protective shell surrounding the quantum dot particles, providing isolation from oxygen and water while allowing for efficient light emission. The sealed tubular spaces further reinforce this protective barrier.
2Stability of the object's composition
If quantum dot particles are exposed to oxygen and water, then material stability deteriorates, but encapsulation complexity increases
Solution Approach 1:
A quantum dot-polymer composite system is created where the polymer matrix provides inherent protection against oxygen and water exposure. This composite approach enhances material stability while avoiding the need for complex multi-layer encapsulation structures.
Solution Approach 2:
The polymer matrix creates an inert microenvironment around the quantum dot particles, isolating them from reactive oxygen and water molecules. The sealed tubular spaces further maintain this inert atmosphere, preventing material degradation without requiring complex external protection systems.
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
This solution effectively seals quantum dot particles within the display substrate, preventing cadmium pollution and material degradation, enhancing the display performance and environmental safety while allowing for efficient light emission, thereby improving the quality of liquid crystal displays.
Implementation Method 1
highly efficient quantum dot phosphor particle may convert the light emitted by a light source of standard blue light light-emitting diode (LED) into light with different wavelengths
Data Source
AI summary
The present invention relates to a display substrate and a method for manufacturing the same, and a display device, wherein the substrate comprises a sealed space formed therein, a quantum dot-polymer composite system is sealed in the sealed space, and the quantum dot-polymer composite system is configured to emit light with a second wavelength and light with a third wavelength when excited by light with a first wavelength.