Light-Emitting Element with Plasmonic Converting Layer
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Solution Overview
Problem
Conventional electroluminescence elements face issues of insufficient emission intensity and narrow viewing angle, limiting their application in high-definition displays.
Innovation Solution
A light-emitting element configuration that includes a light-emitting layer, a transparent electrode layer, and a converting layer with particles expressing a surface plasmon phenomenon, where the converting layer is positioned between the transparent electrode layer and the light-emitting layer to enhance emission intensity and viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional electroluminescence elements are used, then the structure is simple and easy to manufacture, but the emission intensity is insufficient and the viewing angle is narrow
Solution Approach 1:
The electroluminescence element is divided into multiple functional layers including a light-emitting layer, a transparent electrode layer, and a converting layer with particles. This segmentation allows each layer to perform its specific function optimally, with the converting layer containing particles that express surface plasmon phenomenon to enhance light extraction and increase emission intensity while maintaining a manageable structural complexity through modular design.
2Adaptability or versatility
If conventional electroluminescence elements are used, then the manufacturing process is simple, but the viewing angle is narrow
Solution Approach 1:
A converting layer containing particles that express surface plasmon phenomenon is introduced as an intermediary between the light-emitting layer and the transparent electrode layer. This intermediary layer facilitates improved light extraction and widens the viewing angle by utilizing plasmonic effects to enhance light emission in multiple directions, while the layer can be integrated into the existing manufacturing process through conventional thin-film deposition techniques.
3Illumination intensity
If a converting layer with particles is added, then the emission intensity increases and viewing angle widens, but the device complexity increases
Solution Approach 1:
The converting layer contains particles with specific physical and chemical parameters optimized to express surface plasmon phenomenon. By controlling particle size, shape, and material composition, the layer achieves enhanced light extraction efficiency and increased luminance. The particle parameters are carefully selected to maximize plasmonic effects while maintaining compatibility with standard manufacturing processes, thus improving performance without excessively increasing 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 configuration increases emission intensity and widens the viewing angle, enabling the production of displays with higher luminance and wider viewing angles, thus improving display quality.
Implementation Method 1
the converting layer containing particles expressing a surface plasmon phenomenon
Data Source
AI summary
A light-emitting element of the present invention includes (i) a light-emitting layer (109), (ii) an electrode layer (110) being transparent to part of light emitted from the light-emitting layer (109), (iii) color converting layers (113, 114), and (iv) a transparent layer (115). The color converting layers (113, 114) and the transparent layer (115) sandwich the transparent electrode layer (110) with the light-emitting layer (109). The color converting layers (113, 114) and the transparent electrode layer (115) contain particles (116, 117, 118) expressing a surface plasmon phenomenon, respectively.