Dual-Diameter Light Emitting Elements for High-Resolution Displays
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Solution Overview
Problem
Current display devices face challenges in achieving high-resolution displays due to limitations in the design and manufacturing of light emitting elements, particularly in creating efficient light sources with varying diameters and electrode configurations.
Innovation Solution
The display device incorporates light emitting elements with distinct diameters and a base layer configuration, where the first area has a greater diameter than the second area, with electrodes positioned on both areas to enhance light emission and electrical connectivity, and includes a color conversion layer and color filter for improved color reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light emitting elements with uniform diameter are used, then manufacturing process is simple, but display resolution and light emission efficiency are limited
Solution Approach 1:
The light emitting element is divided into two distinct areas: a first area with a larger diameter and a second area with a smaller diameter. This segmentation allows each area to serve different functions - the first area optimizes for light emission efficiency while the second area facilitates electrode integration and electrical connectivity, thereby improving display resolution without requiring complete structural redesign
Solution Approach 2:
Different regions of the light emitting element are assigned different diameters to optimize local functions. The first area (larger diameter) is optimized for light generation and emission, while the second area (smaller diameter) is optimized for electrode contact and electrical performance. This local differentiation resolves the contradiction by allowing uniform manufacturing processes while achieving varied functional performance across different zones
2Productivity
If electrodes are positioned only on one area, then device structure is simple, but electrical connectivity and light emission efficiency are insufficient
Solution Approach 1:
The electrode configuration is segmented into two distinct positioning areas: electrodes on the first area (larger diameter) for primary electrical input, and electrodes on the second area (smaller diameter) for additional electrical connectivity or control functions. This segmentation enables improved light emission efficiency through optimized current distribution while maintaining manageable device complexity through systematic electrode placement
Solution Approach 2:
The dual-area electrode configuration serves multiple functions simultaneously: the first area electrodes provide primary current injection for light generation, while the second area electrodes enable additional functions such as control signaling, current balancing, or enhanced electrical connectivity. This multi-functionality improves overall productivity without proportionally increasing device complexity
3Stability of the object's composition
If base layer thickness is increased, then structural stability is improved, but manufacturing precision and electrode alignment become more difficult
Solution Approach 1:
The base layer structure is segmented in thickness to resolve the contradiction: the portion underlying the first area (larger diameter) has greater thickness to provide structural stability and support for primary electrodes, while the portion underlying the second area (smaller diameter) has reduced thickness to facilitate precise electrode alignment and electrical connectivity. This segmented thickness approach maintains stability where needed while enabling manufacturing precision where required
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 enables high-resolution displays with efficient light emission and improved color accuracy, addressing the limitations of existing technologies by optimizing the structure and manufacturing process of light emitting elements.
Implementation Method 1
a first light emitting element emitting light of a first color; a second light emitting element emitting light of a second color; and a third light emitting element emitting light of a third color
Implementation Method 2
a color conversion layer disposed on the light emitting elements
Implementation Method 3
a color filter layer disposed on the color conversion layer
Data Source
AI summary
A display device includes light emitting elements each including a first area and a second area having different diameters, and a base layer surrounding the first area of the light emitting elements and contacting the first area of each of the light emitting elements. The second area of each of the light emitting elements protrudes from a first surface of the base layer.