Phosphor Ceramic Matrix Material Thermal Management
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Solution Overview
Problem
Current light emitting devices using ceramics face challenges in optimizing thermal management and production processes, with a need for improved thermal conductivity and cost-effective production methods while maintaining stability at high temperatures.
Innovation Solution
A phosphor ceramic is developed with a matrix material having a melting point ≥200°C lower than other light emitting materials, allowing for simplified production, adaptable spectrum adjustment, and variable panel thickness, incorporating red, green, and blue-emitting materials for enhanced thermal management and processability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a phosphor ceramic uses multiple light emitting materials with similar melting points, then the material stability at high temperatures is maintained, but the production process becomes complex and costly
Solution Approach 1:
The patent segments the light emitting materials into two distinct groups based on melting point: a first group with higher melting points (≥1500°C) for thermal stability and a second group with lower melting points (≥1300°C) for cost-effective production. This segmentation allows each group to serve its specific function while simplifying the overall production process compared to using materials with similar melting points.
Solution Approach 2:
The patent changes the melting point parameter of the matrix material to be at least 200°C lower than the other light emitting materials. This parameter change enables the matrix material to be produced at lower temperatures, simplifying the production process while maintaining the stability and performance of the overall phosphor ceramic system.
2Reliability
If a phosphor ceramic uses materials with high melting points, then thermal stability is improved, but production cost increases
Solution Approach 1:
The patent divides the light emitting materials into a first group with high melting points (≥1500°C) that provides thermal stability and a second group with lower melting points (≥1300°C) that reduces production cost. This segmentation allows the system to achieve both thermal stability and cost-effectiveness by using each material group for its intended purpose.
Solution Approach 2:
The patent creates a composite phosphor ceramic system combining different light emitting materials with different melting point characteristics. The matrix material has a melting point at least 200°C lower than the other light emitting materials, creating a composite structure that leverages the thermal stability of high-melting-point materials while using lower-melting-point materials for cost-effective production.
3Ease of manufacture
If the matrix material has a melting point ≥200°C lower than other light emitting materials, then production temperature is reduced and manufacturing is simplified, but thermal management capability may be compromised
Solution Approach 1:
The patent segments the materials into a matrix material with lower melting point for simplified production and light emitting materials with higher melting points for thermal stability. This segmentation allows the system to benefit from lower production temperatures while maintaining thermal management capability through the high-melting-point light emitting materials.
Solution Approach 2:
The patent applies local quality by assigning different melting point characteristics to different components: the matrix material has a lower melting point for ease of manufacture, while the light emitting materials have higher melting points for thermal stability. This local differentiation allows each component to optimize its function without compromising the overall system performance.
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 solution significantly improves the properties of light emitting devices by enabling cost-optimized production, efficient thermal management, and flexible spectrum adaptation, maintaining stability and efficiency across various applications.
Implementation Method 1
The term 'phosphor' according to the present disclosure refers to or encompasses in particular a material which upon suitable excitation, preferably in the blue, violet, UV-A or UV-B range (i.e., in particular 280-490 nm), emits light, in particular within a wavelength range of 400-2500 nm (visible+infrared spectrum).
Data Source
AI summary
The present disclosure relates to a phosphor ceramic comprising a plurality of luminescence conversion materials, wherein a luminescence conversion material serves as a matrix material for the others.