LED Element With Nano-Sphere Grooves for Light Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional light emitting diode (LED) dies have limited light extraction efficiency, necessitating an improvement in this area to enhance overall light output quality.
Innovation Solution
The use of nano-spheres arranged in grooves or channels on a substrate within a light emitting diode element, combined with a transversal epitaxy growth mechanism, to increase light scattering and crystal quality, thereby improving light extraction efficiency and output quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional LED die structure is used, then device simplicity is maintained, but light extraction efficiency is limited
Solution Approach 1:
The substrate surface is segmented into multiple grooves arranged in arrays, and nano-spheres are placed within each groove. This segmentation creates multiple light scattering centers that improve light extraction efficiency without requiring complete structural redesign of the LED die
Solution Approach 2:
Nano-spheres are introduced as intermediary elements between the substrate and the light emitting structure. These nano-spheres act as mediators that scatter light and improve extraction efficiency while maintaining relative simplicity of the overall device structure
2Ease of manufacture
If nano-spheres are added to improve light scattering, then light extraction efficiency increases, but device complexity increases
Solution Approach 1:
The nano-spheres are integrated into the substrate structure by placing them within grooves during the manufacturing process. This merging approach combines the substrate and nano-sphere components into a unified structure, reducing the number of separate parts while maintaining the light scattering function
3Ease of manufacture
If grooves are formed on substrate to receive nano-spheres, then light scattering is enhanced, but manufacturing complexity increases
Solution Approach 1:
The substrate surface is modified locally by forming grooves only in specific regions where nano-spheres will be placed. This local quality change enhances light scattering at critical interfaces without requiring complex modifications to the entire substrate structure
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 integration of nano-spheres enhances light scattering and crystal growth, leading to increased light extraction efficiency and improved light output quality, with the nano-spheres' placement near the light emitting structure further optimizing these effects.
Implementation Method 1
The use of nano-spheres arranged in grooves or channels on a substrate within a light emitting diode element, combined with a transversal epitaxy growth mechanism, to increase light scattering and crystal quality, thereby improving light extraction efficiency and output quality.
Implementation Method 2
The present invention provides a light emitting diode element which utilizes a transversal epitaxy growth mechanism for enhancing the whole crystals to regularly grow and effectively improving the crystal quality of epitaxy.
Data Source
AI summary
The present invention provides a light emitting diode (LED) element which comprises a substrate, a buffer layer, a plurality of nano-spheres and a light emitting structure. The substrate comprises a plurality of grooves arranged at intervals on a surface of the substrate. The buffer layer is disposed on the surface of the substrate where the grooves being formed, wherein the grooves are disposed between the substrate and the buffer layer. The nano-spheres are received in the grooves, so each groove is provided with at least a nano-sphere. The light emitting structure is disposed on the buffer layer.