Light Emitting Device Mixed Spectrum Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional light emitting devices face challenges in achieving consistent white light spectrums due to variations in quantum wells of broadband chips, leading to low utilization rates and increased manufacturing costs, as they can only select chips that meet specific specifications to ensure consistency.
Innovation Solution
A light emitting device comprising a mixed light source generated from two light emitting diode package structures with different white light spectrums, where the spectral deviation indices of each source are carefully managed to ensure the mixed light source meets a standard white light spectrum, thereby increasing chip utilization and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If only broadband chips meeting qualified specifications are selected to manufacture light emitting diodes, then the white light spectrum consistency is improved, but the chip utilization rate decreases and manufacturing costs increase
Solution Approach 1:
The patent combines multiple light emitting diodes with different white light spectrums (first spectrum, second spectrum, third spectrum) to form a light emitting assembly. By merging these different spectral sources, the system achieves overall spectrum consistency through complementary combination rather than requiring each individual chip to meet strict spectral specifications, thereby improving chip utilization rate while maintaining product quality.
Solution Approach 2:
The patent changes the selection criterion from requiring each individual chip to have consistent spectral parameters to requiring the combined assembly to achieve consistent spectral output. This parameter change allows chips with varying spectral characteristics to be utilized, transforming the quality control approach from individual component specification to system-level performance specification.
2Manufacturing precision
If only broadband chips meeting qualified specifications are selected to manufacture light emitting diodes, then the white light spectrum consistency is improved, but the manufacturing costs increase
Solution Approach 1:
By merging multiple light emitting diodes with different spectrums into a single light emitting assembly, the patent enables the use of chips that would otherwise be considered non-conforming. This combining approach reduces waste and lowers manufacturing costs while achieving the required spectral consistency at the assembly level rather than requiring expensive precision control at the individual chip level.
3Productivity
If light emitting diodes with different white light spectrums are used, then the chip utilization rate is improved, but the white light spectrum consistency deteriorates
Solution Approach 1:
The patent merges multiple light emitting diodes with different white light spectrums (first, second, and third spectrums) into a unified light emitting assembly. The combination of these different spectral sources produces an overall output that achieves spectrum consistency, demonstrating that merging diverse components can achieve uniform performance that individual components cannot achieve alone.
Solution Approach 2:
The patent changes the quality assurance parameter from individual chip spectral consistency to assembly-level spectral consistency. This parameter transformation allows the system to accept chips with varying spectral parameters while ensuring the final assembled product meets the required spectral standards, thereby improving chip utilization without sacrificing product quality.
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 allows for consistent white light spectrums in light emitting devices while maximizing chip utilization and minimizing manufacturing costs by mixing light sources with different spectrums, ensuring the mixed light source meets qualified specifications.
Implementation Method 1
The first chip cooperates with the first package body so as to generate a first light source that has a first spectrum corresponding to the white light spectrum. The second chip cooperates with the second package body so as to generate a second light source.
Data Source
AI summary
A light emitting device is provided. The light emitting device includes a light emitting assembly having a first light emitting diode package structure and a second light emitting diode package structure. The light emitting assembly can generate a mixed light source having a spectral deviation index. The first light emitting diode package structure can generate a first light source having a first spectral deviation index. The second light emitting diode package structure can generate a second light source having a second spectral deviation index. When the first light source and the second light source are within a range from 460 to 500 nm, a sum of the first spectral deviation index and the second spectral deviation index is within a range from −0.3 to 0.3, and a difference between the first spectral deviation index and the second spectral deviation index is at least greater than 0.2.