Quantum Dot Unit Lamination for Brighter 3D Volumetric Displays
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Solution Overview
Problem
Existing solid-state volumetric three-dimensional display technologies suffer from low brightness, poor contrast, low longitudinal resolution, and limited viewing angle, as well as low longitudinal resolution and a single viewing angle in liquid crystal lamination-based displays.
Innovation Solution
A processing method for a three-dimensional display element involving the sequential formation of quantum dot units with transparent conductive layers, laminating and bonding these units with spacers to improve light-emitting surface uniformity, contrast, and viewing angle, and incorporating a circuit board for electrical connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dots are used in display devices, then color purity and brightness are improved, but toxic heavy metals are generated causing environmental pollution
Solution Approach 1:
The patent changes the material composition parameter of quantum dots by replacing toxic heavy metals (Cd, Pb, Hg) with non-toxic elements (In, Ga, Al, Zn, Se, Te) while maintaining the quantum dot structure and optoelectronic properties. This parameter change eliminates toxicity while preserving brightness and color purity.
Solution Approach 2:
The patent develops composite quantum dot structures with core-shell configurations (e.g., InP core with ZnSe or Ga2O3 shell) where the core provides optoelectronic functionality and the shell provides protective and stabilizing functions. This composite structure achieves both high performance and environmental safety.
2Manufacturing precision
If quantum dot synthesis is performed, then high-performance display materials are produced, but complex purification processes are required to remove organic solvents and unreacted reagents
Solution Approach 1:
The patent employs inert atmosphere techniques during quantum dot synthesis and processing to prevent oxidation and contamination, eliminating the need for complex purification steps. The inert environment maintains quantum dot quality while simplifying the overall manufacturing process.
Solution Approach 2:
The patent uses aqueous-based synthesis methods that create quantum dots with surface structures inherently resistant to aggregation and degradation, eliminating the need for complex organic solvent removal and purification processes while maintaining high quantum dot quality.
3Reliability
If conventional quantum dot materials are used, then display performance is achieved, but environmental safety and health standards are violated
Solution Approach 1:
The patent fundamentally changes the chemical composition parameters of quantum dots by replacing toxic heavy metals with non-toxic alternative elements while maintaining the nanoscale structure and optoelectronic properties necessary for display performance.
Solution Approach 2:
The patent converts the harmful toxicity of heavy metal quantum dots into beneficial non-toxic materials that maintain or improve display performance while eliminating environmental and health hazards, turning a harmful technology into a safe one.
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
Enhances light-emitting contrast, material transparency, depth resolution, and viewing angle, enabling full-color large-format three-dimensional displays with improved image quality and flexibility.
Implementation Method 1
Quantum dots are nanometer-sized semiconductor particles that exhibit quantum confinement effects and have unique optical properties
Implementation Method 2
The quantum dot complex according to one embodiment comprises a core, a shell surrounding the core, and a long chain ligand remaining on the surface of the shell
Data Source
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AI summary
The present disclosure discloses a quantum dot complex, a three-dimensional display element, and a process for a quantum dot complex. The process for the quantum dot complex includes: sequentially providing a first transparent conductive layer, coating a quantum dot layer, and providing a second transparent conductive layer, on a side of a transparent substrate to form a quantum dot unit; bonding a plurality of quantum dot units; and obtaining the quantum dot complex by trimming the bonded quantum dot units.