Quantum Dot Hybrid Microdisplay for High-Resolution Color Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current micro-LED microdisplays face challenges in colorization, manufacturing complexity, and immature technology issues related to the lifetime and efficiency of quantum dot blue materials, particularly in high-resolution and long-term wear applications like the 'meta-universe' concept.
Innovation Solution
A quantum dot hybrid integrated multi-color display is developed, combining blue LEDs with quantum dots to simplify structure, enhance manufacturing yield, and improve luminous effects, featuring a CMOS wafer substrate with anode vias, light-emitting units, and a filling layer, where quantum dot first and second light-emitting units emit green and red lights, respectively, or jointly form two-color light-emitting units with blue LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If micro-LED is used for high-resolution display, then display quality is improved, but manufacturing complexity increases and manufacturing yield decreases
Solution Approach 1:
The patent combines micro-LED technology with quantum dot color conversion layers and integrates multiple functional components (light-emitting units, color conversion layers, microlens arrays, waveguides) into a unified microdisplay structure. This merging approach simplifies the overall manufacturing process by creating a modular hybrid system that leverages the strengths of different technologies while reducing the number of separate manufacturing steps required.
Solution Approach 2:
The patent employs composite material structures including quantum dot layers combined with micro-LED emitters, multi-layer color conversion materials, and integrated optical components. These composite structures enable high-resolution display while simplifying manufacturing by combining multiple functions into single integrated layers rather than requiring separate processing steps for each component.
2Adaptability or versatility
If quantum dot blue material is used for colorization, then color display capability is improved, but lifetime and efficiency are insufficient
Solution Approach 1:
The patent utilizes quantum dots with precisely controlled size parameters to achieve different emission wavelengths. By adjusting the quantum dot size and composition parameters, the system achieves superior color display capability with improved stability and lifetime compared to traditional quantum dot blue materials, as the size-tuned emission properties are inherently more stable than chemical composition changes.
Solution Approach 2:
The patent introduces quantum dot color conversion layers as intermediary elements between the micro-LED light sources and the final display output. These quantum dot intermediaries convert the blue light from micro-LEDs into precise red and green wavelengths, achieving excellent color display capability while the robust micro-LED blue sources provide the stable, long-lived pump energy, thereby solving the lifetime and efficiency limitations of direct quantum dot blue emission.
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 provides a high-yield, efficient, and luminously effective display with improved pixel per inch (PPI) performance, overcoming colorization and efficiency limitations of existing technologies, and integrating blue LEDs with red and green quantum dot light-emitting systems for a mature inorganic LED microdisplay device.
Implementation Method 1
a quantum dot first light-emitting unit and configured to emit a green light and a quantum dot second light-emitting unit and configured to emit a red light
Data Source
AI summary
Disclosed is a quantum dot hybrid integrated multi-color display, including a CMOS wafer substrate, anode vias, and a light-emitting unit. Tungsten holes are formed in the CMOS wafer substrate, the anode vias are formed in the CMOS wafer substrate, and the anode vias are electrically connected with a driving circuit in the CMOS wafer substrate through the tungsten holes. The anode vias are blind vias starting on a surface of the CMOS wafer substrate. The light-emitting unit is disposed on the surface of the anode via in the CMOS wafer substrate, a driving current signal is provided to the light-emitting unit through the anode via.