Optoelectronic Component Lamina with Color Scattering Layer
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Solution Overview
Problem
Optoelectronic components with light emitting diodes often exhibit color inhomogeneities and visual disturbances due to substrates, metallization, or conversion layers, which are undesirable, especially when the diodes are switched off, and there is a need for a more homogeneous and mechanically robust design.
Innovation Solution
An optoelectronic component featuring a transparent lamina with a conversion layer and a color scattering layer, where the conversion layer is positioned upstream of the emission direction to scatter light, providing a uniform optical appearance by generating a specific color even when the component is not emitting light, and the color scattering layer covers inhomogeneities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a carrier with light emitting diodes, substrates, metallization, and conversion layers is used, then the optoelectronic component can emit light, but color differences and inhomogeneities occur that are visually disturbing especially when the diodes are switched off
Solution Approach 1:
The patent applies a color scattering layer that scatters specific wavelengths of light to generate a uniform color appearance. This layer compensates for the visual inhomogeneities caused by different colored components (substrates, metallization, conversion layers) by introducing a dominant scattering color that masks the underlying color variations, especially in the switched-off state.
Solution Approach 2:
The patent introduces a color scattering layer designed to create a homogeneous visual appearance across the entire optoelectronic component. This layer scatters light uniformly in specific wavelengths to mask the inhomogeneities caused by individual components, achieving a consistent visual impression regardless of the underlying structural variations.
2Ease of manufacture
If multiple layers (substrate, metallization, conversion layers) are arranged on the carrier, then the light emitting diodes can function, but the component becomes less flat and mechanically less robust
Solution Approach 1:
The patent combines multiple functional layers (conversion layer and color scattering layer) into a single integrated lamina structure. This merging reduces the total number of separate layers and interfaces, thereby improving mechanical robustness and flatness while maintaining the necessary optical conversion and scattering functions.
Solution Approach 2:
The patent uses a composite lamina structure that integrates the conversion layer and color scattering layer into a single element. This composite approach maintains the functional benefits of multiple layers (light conversion and color scattering) while reducing mechanical complexity and improving overall structural integrity compared to separate stacked layers.
3Manufacturing precision
If a color scattering layer is added to generate color and cover inhomogeneities, then visual homogeneity is improved, but light coupling efficiency is reduced
Solution Approach 1:
The patent optimizes the parameters of the color scattering layer, including its position, thickness, and scattering characteristics, to achieve a balance between visual homogeneity and light coupling efficiency. By carefully controlling these parameters, the layer scatters sufficient light to mask inhomogeneities while minimizing the reduction in overall light output and coupling efficiency.
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
This configuration results in a homogeneous visual impression by scattering specific wavelengths, enhancing design aesthetics and mechanical stability while accepting a slight reduction in light coupling efficiency.
Implementation Method 1
an at least partly transparent lamina is arranged on the luminous face, wherein said lamina having a surface facing the luminous face and a surface facing away from the luminous face, wherein at least one conversion layer and a color scattering layer for generating a color by light scattering are arranged on at least one of the facing and facing-away surfaces
Implementation Method 2
a color scattering layer for generating a color by light scattering are arranged on at least one of the facing and facing-away surfaces, wherein the conversion layer is arranged upstream of the color scattering layer relative to an emission direction of light from the luminous face, such that light emitted by the luminous face can first be converted and then be scattered
Data Source
AI summary
An optoelectronic component includes a carrier, a light source formed on the carrier, the light source having at least one luminous face formed by one or more light emitting diodes, wherein an at least partly transparent lamina is arranged on the luminous face, the lamina having a surface facing the luminous face and a surface facing away from the luminous face, wherein at least one conversion layer and a color scattering layer for generating a color by light scattering are arranged on at least one of the facing and facing-away surfaces, wherein the conversion layer is arranged upstream of the color scattering layer relative to an emission direction of light from the luminous face, such that light emitted by the luminous face can first be converted and then be scattered.