Optoelectronic Component Color Stability via Scattering Particles
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Solution Overview
Problem
Optoelectronic components experience a shift in color locus due to aging, which is undesirable in applications requiring stable color emission, such as LCD backlighting, and current solutions using aging-resistant materials are costly and unsuitable for miniaturized designs.
Innovation Solution
An optoelectronic component with a housing having a cavity with partly reflective side walls and embedded conversion and scattering particles, where the scattering capability increases over time to maintain a stable color locus, using materials like phenylsilicone and methylsilicone to adapt to decreasing reflectivity caused by radiation, heat, and moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If aging-resistant materials like suitable silicones are used to counteract color locus shift, then color stability is improved, but processing complexity increases and production costs rise
Solution Approach 1:
The patent introduces scattering particles as an intermediary element within the potting material to indirectly compensate for the color locus shift caused by side wall aging. Rather than relying solely on aging-resistant materials, the scattering particles act as a mediator that dynamically adjusts light scattering to counteract the deteriorating reflectivity, thereby achieving color stability with simpler, more cost-effective materials.
Solution Approach 2:
The patent changes the optical parameters of the potting material by incorporating scattering particles with specific scattering coefficients. These particles alter the light propagation path and scattering characteristics to compensate for aging effects, enabling color stability without requiring complex aging-resistant materials or processing procedures.
2Ease of manufacture
If conventional potting materials are used, then production cost is reduced, but color locus shifts during operation
Solution Approach 1:
The patent creates a composite potting material by combining conventional, cost-effective base materials with scattering particles. This composite structure maintains the ease of manufacture and low cost of conventional materials while adding the color stability function through the scattering particles, thereby resolving the contradiction between production cost and color locus stability.
Solution Approach 2:
The scattering particles serve as an intermediary that enables conventional potting materials to achieve color stability. These particles are dispersed within the conventional material matrix, acting as functional additives that compensate for aging effects without requiring expensive specialized materials, thus maintaining cost-effectiveness while improving color locus stability.
3Volume of moving object
If miniaturized designs are implemented, then component size is reduced, but processing becomes more difficult
Solution Approach 1:
The patent adjusts the concentration and scattering coefficient parameters of the scattering particles to optimize performance in miniaturized designs. By carefully controlling these parameters, the patent achieves effective color compensation in small-scale components without introducing excessive processing complexity, enabling miniaturization while maintaining manufacturability.
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 component maintains a stable color locus with minimal fluctuation over its lifetime, allowing for cost-effective and compact designs while ensuring high thermal and UV stability, effectively counteracting the effects of aging on reflectivity and scattering.
Implementation Method 1
The cavity includes at least one side wall at least partly reflecting light rays incident on the side wall
Implementation Method 2
conversion particles are embedded into the potting material, which conversion particles convert light rays having a first wavelength incident on the conversion particles into light rays having a second wavelength
Implementation Method 3
scattering particles are embedded into the potting material, which scattering particles scatter light rays incident on the scattering particles
Data Source
AI summary
An optoelectronic component includes a housing having a cavity in which an optoelectronic semiconductor chip having an emission face that emits light rays and a transparent potting material are arranged, wherein the cavity includes at least one side wall at least partly reflecting light rays incident on the side wall and reflectivity of which decreases as an operating period of the component increases, conversion particles are embedded into the potting material, which conversion particles convert light rays having a first wavelength incident on the conversion particles into light rays having a second wavelength, and scattering particles are embedded into the potting material, which scattering particles scatter light rays incident on the scattering particles and the scattering capability of which scattering particles increases as the operating period increases.