Luminescence Conversion Element for High Color Rendering White Light
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing luminescence conversion elements fail to efficiently generate electromagnetic radiation with predefinable spectral characteristics for optoelectronic semiconductor components, particularly in producing white light with a desired color temperature and high color rendering index.
Innovation Solution
A luminescence conversion element comprising three types of luminescent material particles that emit electromagnetic radiation in the green, yellow-red, and red regions of the spectrum, with peak wavelengths between 515 nm to 550 nm, 595 nm to 612 nm, and 625 nm to 660 nm respectively, when excited by primary blue radiation, allowing for the generation of white light with a correlated color temperature corresponding to warm or neutral white light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional luminescence conversion elements with limited luminescent material types are used, then device complexity is reduced, but the color rendering index and luminous efficacy are insufficient
Solution Approach 1:
The patent applies composite materials by combining three distinct types of luminescent material particles (first, second, and third types) with different emission characteristics into a single conversion element. This composite structure enables the element to simultaneously convert blue light into multiple wavelength ranges (green, yellow-red, and red), achieving high color rendering index and luminous efficacy while maintaining a relatively simple overall device structure.
2Ease of manufacture
If conventional luminescence conversion elements with limited luminescent material types are used, then device complexity is reduced, but luminous efficacy is insufficient
Solution Approach 1:
The patent applies composite materials by combining three distinct types of luminescent material particles (first, second, and third types) with different emission characteristics into a single conversion element. This composite structure enables the element to simultaneously convert blue light into multiple wavelength ranges (green, yellow-red, and red), achieving high color rendering index and luminous efficacy while maintaining a relatively simple overall device structure.
3Manufacturing precision
If three types of luminescent material particles are used, then color rendering index and luminous efficacy are improved, but device complexity increases
Solution Approach 1:
The patent merges three separate luminescent material functions into a single integrated conversion element. Instead of using separate conversion elements for different wavelength ranges, the invention combines first, second, and third luminescent material particles within one element, allowing simultaneous conversion to green, yellow-red, and red wavelengths. This merging approach achieves high color rendering index while avoiding the complexity of multiple separate components.
4Productivity
If three types of luminescent material particles are used, then luminous efficacy is improved, but device complexity increases
Solution Approach 1:
The patent merges three separate luminescent material functions into a single integrated conversion element. Instead of using separate conversion elements for different wavelength ranges, the invention combines first, second, and third luminescent material particles within one element, allowing simultaneous conversion to green, yellow-red, and red wavelengths. This merging approach achieves high color rendering index while avoiding the complexity of multiple separate components.
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 use of three types of luminescent material particles enables the efficient generation of white light with a high color rendering index and adjustable color temperature, enhancing luminous efficacy and color rendering quality compared to components using fewer types of luminescent material particles.
Implementation Method 1
first luminescent material particles that, when excited by the primary electromagnetic radiation, emit a first electromagnetic radiation
Data Source
AI summary
A luminescence conversion element for wavelength conversion of primary electromagnetic radiation into secondary electromagnetic radiation includes first luminescent material particles that, when excited by the primary electromagnetic radiation, emit a first electromagnetic radiation, a peak wavelength of which is at least 515 nm to at most 550 nm of a green region of the electromagnetic spectrum; second luminescent material particles that, when excited by the primary electromagnetic radiation, emit a second electromagnetic radiation, a peak wavelength of which is at least 595 nm to at most 612 nm of a yellow-red region of the electromagnetic spectrum; and third luminescent material particles that, when excited by the primary electromagnetic radiation, emit a third electromagnetic radiation, a peak wavelength of which is at least 625 nm to at most 660 nm of a red region of the electromagnetic spectrum.