Light Emitting Element Doping Gradient Buffer Layers for Alignment
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Solution Overview
Problem
Current light emitting elements face challenges in achieving optimal alignment and efficiency due to limitations in doping concentration gradients and material combinations, which affect their dipole moment and overall performance in display devices.
Innovation Solution
A light emitting element design featuring semiconductor layers with different doping concentrations and intermediate layers made of materials like AlGaN, GaN, AlGaInN, AlN, SiN, Si3N4, and BN, which enhances the dipole moment and alignment by minimizing dopant diffusion and controlling electron movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If doping concentration gradients are increased to improve alignment, then alignment improves, but dopant diffusion increases reducing manufacturing precision
Solution Approach 1:
The patent introduces an intermediate layer with moderate doping concentration positioned between high and low doping concentration regions. This intermediate layer acts as a buffer that maintains the overall doping gradient necessary for alignment while preventing direct diffusion between regions of vastly different doping concentrations, thus resolving the contradiction between achieving good alignment and preventing dopant diffusion.
Solution Approach 2:
The patent employs multiple intermediate layers with progressively varying doping concentrations to create a gradual transition zone. By changing the doping concentration parameter step-by-step across different layers rather than having abrupt transitions, the patent maintains effective alignment while minimizing dopant diffusion between adjacent regions.
2Manufacturing precision
If intermediate layers are added to control electron movement, then alignment improves, but device complexity increases
Solution Approach 1:
The patent introduces intermediate layers selectively in specific regions where alignment control is needed, rather than uniformly across the entire device. Each intermediate layer is positioned strategically between semiconductor layers with different doping concentrations to provide localized electron movement control, thus achieving improved alignment without unnecessarily increasing overall device complexity.
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 proposed design improves the alignment and efficiency of light emitting elements by maintaining a high dipole moment, leading to enhanced performance and longevity in display devices.
Implementation Method 1
minimizing dopant diffusion
Implementation Method 2
light emitting element
Data Source
AI summary
A light emitting element may include a first semiconductor layer, a second semiconductor layer including a first area, a second area, and a third area that have different doping concentrations, an active layer disposed between the first semiconductor layer and the second semiconductor layer, and a first intermediate layer and a second intermediate layer that are disposed between at least one of the first area, the second area, and the third area. The first intermediate layer and the second intermediate layer may include different materials.