LED Light Apparatus With Multi-Region Fluorescent Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current LED light technologies lack flexibility and efficiency in producing mixed light outputs with desired optical parameters, such as color temperatures and spectrums, which are essential for simulating natural light conditions and meeting various lighting needs.
Innovation Solution
A light apparatus comprising multiple LED modules with separate electrodes and shared semiconductor layers, each covered with different fluorescent layers, and a control circuit that adjusts currents to the LED regions for generating mixed light outputs. The driver module selectively supplies currents to the LED regions, allowing for dynamic adjustment of light strengths and color temperatures by varying current ratios and PWM duty cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate LED modules with different fluorescent layers are used to generate mixed light outputs, then the flexibility and precision of optical parameters (color temperature, spectrum) are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent combines multiple LED regions with different fluorescent layers (first fluorescent layer for converting blue light to yellow, second fluorescent layer for converting blue light to red) into a single integrated LED module structure. This merging approach maintains the ability to produce mixed light outputs with adjustable color temperatures while reducing the complexity of managing multiple separate LED modules. The integrated structure shares common packaging and electrical connections, simplifying the overall device architecture.
Solution Approach 2:
The LED module is designed with multi-functionality by incorporating multiple LED regions that can emit different wavelengths of light simultaneously. The first LED region with the first fluorescent layer produces yellow light, while the second LED region with the second fluorescent layer produces red light. By independently controlling the current to each region, the module can generate various color temperatures and light compositions, providing universal applicability for different lighting scenarios.
2Manufacturing precision
If separate electrodes are provided for each LED region with different fluorescent layers, then the control precision of current supply and light output are improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent applies local quality by providing separate electrodes specifically for the second LED region with the second fluorescent layer, while the first LED region shares a common electrode structure. This selective approach to separate electrodes allows for independent control of the red light component (which requires precise color mixing) while simplifying the structure for the yellow light component. The local differentiation in electrode design balances control precision with manufacturing simplicity.
3Reliability
If different LED regions are kept with distance for heat dissipation, then the reliability and lifespan of LED regions are improved, but the compactness and integration density of the module decrease
Solution Approach 1:
The patent introduces a heat dissipation structure as an intermediary element between the first LED region and the second LED region. This heat dissipation structure serves as a thermal management mediator that conducts heat away from the LED regions while maintaining their spatial arrangement. The intermediary heat dissipation structure enables close proximity of LED regions for compactness while ensuring adequate thermal management for reliability.
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
Enables the production of mixed light outputs with precise optical characteristics, simulating natural light changes and providing flexible lighting options, including adjustable color temperatures and spectrums, while optimizing heat dissipation and manufacturing efficiency.
Implementation Method 1
The multiple LED regions share the package housing but are covered with different fluorescent layers for emitting lights with different optical characteristics
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A light apparatus for generating a mixed light output. The light apparatus includes multiple LED modules. Each LED module includes multiple LED regions. The multiple LED regions have separate electrodes. The multiple LED regions share the same package housing but at least two LED regions are covered with different fluorescent layers for emitting lights with different optical characteristics.