Micro LED Chip with Porous Quantum Dot Layer
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Solution Overview
Problem
Current display technologies, such as LCD and OLED, face challenges in manufacturing high-resolution displays using micro light emitting devices, requiring complex techniques for device transfer, repair, and color realization.
Innovation Solution
A micro light emitting semiconductor device with a single chip structure integrating a color conversion layer and a micro light emitting chip, featuring a porous layer with quantum dots, a monolithic structure, and additional layers like interlayers and distributed Bragg reflective layers for enhanced color conversion and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a micro light emitting device is used to manufacture high-resolution display apparatus, then the resolution is improved, but the manufacturing process becomes more complex requiring transfer techniques, repair methods, and color realization techniques
Solution Approach 1:
The patent combines the micro light emitting device and color conversion layer into a single integrated chip structure. The light emitting layer and color conversion layer are formed in different regions of the same chip, eliminating the need for separate transfer techniques and repair methods while maintaining high resolution display capabilities
Solution Approach 2:
The single chip structure serves multiple functions: it generates light through the light emitting layer and simultaneously performs color conversion through the color conversion layer. This multi-functional integration simplifies the overall manufacturing process by combining what were previously separate manufacturing steps into one unified device
2Reliability
If a micro light emitting device with separate color conversion is used, then the device functionality is achieved, but the manufacturing cost and process complexity increase
Solution Approach 1:
The patent merges the light emitting device and color conversion functionality into a single chip, reducing manufacturing steps and costs while maintaining full device functionality. The integrated structure eliminates the need for separate assembly processes
3Adaptability or versatility
If traditional color conversion methods are used with micro light emitting devices, then color display is achieved, but the luminous efficiency and color conversion efficiency are reduced
Solution Approach 1:
The patent implements local quality by creating distinct regions within the chip: a light emitting region and a color conversion region. This spatial separation with local functional specialization optimizes each region for its specific purpose, improving overall luminous efficiency and color conversion efficiency while maintaining full color display capability
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 configuration simplifies the manufacturing process, reduces costs, and improves color conversion efficiency, resulting in higher luminous efficiency and cost-effectiveness for display applications.
Implementation Method 1
a color conversion layer provided on the second semiconductor layer, the color conversion layer including a porous layer that includes quantum dots
Implementation Method 2
a light emitting layer provided on the first semiconductor layer
Data Source
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AI summary
Provided is a micro light emitting semiconductor device (100) including a first semiconductor layer (110), a light emitting layer (115) provided on the first semiconductor layer (110), a second semiconductor layer (120) provided on the light emitting layer (115), and a color conversion layer (130) provided on the second semiconductor layer (120), the color conversion layer (130) including a porous layer (131) that includes quantum dots, (132) wherein a doping type of the second semiconductor layer (120) is different from a doping type of the color conversion layer (130).