Hybrid Quantum Dot and Micro-LED Stacked Display Architecture
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Solution Overview
Problem
Current micro-LED display devices face manufacturing difficulties in achieving high resolution due to limited design freedom and efficiency issues with certain color LEDs, as well as challenges in transferring different color LED arrays onto a substrate, which can damage existing LEDs and increase manufacturing complexity.
Innovation Solution
A display device with a hybrid arrangement of electroluminescent and photoluminescent quantum-dot LEDs and micro-LEDs, where different types of LEDs are placed in stacked layers to enhance design freedom and efficiency, with red, green, and blue LEDs being used in separate layers to reduce interlayer influence and simplify the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If different color LED arrays are transferred onto the display substrate in different transfer procedures, then each color can be positioned accurately, but the manufacturing complexity increases and existing LEDs may be damaged
Solution Approach 1:
The patent divides the display substrate into multiple regions, each dedicated to a specific color LED array (red, green, blue). This segmentation allows each color array to be transferred independently using optimized transfer procedures for that specific color, improving positioning accuracy while managing complexity through organized separation of transfer operations.
Solution Approach 2:
The patent prepares the display substrate in advance by defining multiple transfer regions and preparing receiving structures for different color LED arrays before the actual transfer process. This preliminary arrangement enables systematic transfer operations and reduces complexity during the actual assembly process.
2Adaptability or versatility
If red, green and blue sub-pixels are horizontally positioned and laid-out in a display substrate, then the display can show full color, but the highest display resolution is limited
Solution Approach 1:
The patent transitions from traditional horizontal arrangement of RGB sub-pixels to a vertical stacking architecture where different color LED arrays are positioned in different layers or regions along the vertical dimension. This dimensional change allows for higher pixel density and improved display resolution while maintaining full color capability through the vertical organization of color elements.
3Manufacturing precision
If micro-LED technology is used for high resolution display, then display quality improves, but manufacturing difficulty increases
Solution Approach 1:
The patent applies different LED types and transfer methods to different local regions of the display substrate based on specific color requirements and performance needs. For example, electroluminescent QD LEDs may be used in regions requiring high efficiency, while photoluminescent QD LEDs are used where quantum dot conversion is advantageous. This localized optimization achieves high resolution while managing manufacturing complexity through region-specific approaches.
Solution Approach 2:
The patent utilizes different types of LEDs (electroluminescent QD LEDs, photoluminescent QD LEDs, micro-LEDs) with different operational parameters and characteristics in different regions. By changing the type and parameters of LEDs used in different areas, the patent optimizes both display resolution and manufacturing feasibility for each specific region of the display.
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 approach provides greater design flexibility, reduces the impact of subsequent transfer procedures on existing LEDs, and enhances display resolution by allowing for more efficient use of LED types and simplifying the manufacturing process, while minimizing fluorescence excitation and surface topography changes.
Implementation Method 1
electroluminescent quantum-dot LED
Implementation Method 2
photoluminescent quantum-dot LED
Data Source
AI summary
A display device and an electronics apparatus are provided. The display device comprises: a display substrate; and arrays of light-emitting elements on the display substrate, wherein the light-emitting elements include at least two types of electroluminescent quantum-dot LED, photoluminescent quantum-dot LED and micro-LED, wherein at least one type of the light-emitting elements is an electroluminescent quantum-dot LED, or at least two types of the light-emitting elements are micro-LED.