Optoelectronic Semiconductor Component Integrated Phosphor Filter
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Solution Overview
Problem
Existing optoelectronic semiconductor components, particularly LEDs, face challenges in achieving high color rendering index and feeling of contrast index while maintaining an unaltered appearance when not in operation, as external filters are often visible and reduce efficiency due to spectral overlap issues.
Innovation Solution
An optoelectronic semiconductor component with closely connected phosphor and filter substances, embedded in a matrix material, that converts primary radiation into secondary radiation and selectively absorbs it to enhance color rendering and contrast indices without visible external filters, using particles or dissolved forms in molded bodies or plates directly applied to the semiconductor chip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If external filters are used to improve color rendering index and feeling of contrast index, then color quality is improved, but the filters become visible when the component is not in operation and efficiency is reduced due to spectral overlap
Solution Approach 1:
The patent combines the filter substance with the phosphor material into a single integrated layer that is directly applied to the semiconductor chip. This merging eliminates the need for separate external filters, preventing visibility when the component is off and reducing efficiency losses by eliminating air gaps and additional optical interfaces.
Solution Approach 2:
The patent uses a matrix material as an intermediary to embed both the phosphor particles and filter substance molecules. This matrix serves as a carrier that distributes the filter substance uniformly and positions it optimally in the optical path, enabling effective spectral filtering while maintaining component efficiency.
2Illumination intensity
If phosphor converts blue light to orange or orange-red light to achieve warm-white light, then color temperature is adjusted, but spectral overlap with eye sensitivity curve is reduced
Solution Approach 1:
The patent applies local quality by using a filter substance with specific absorption characteristics targeted at particular wavelength regions. The filter is designed to absorb excess light in specific spectral regions while allowing wavelengths that match eye sensitivity to pass through, creating locally optimized spectral distribution rather than uniform modification.
Solution Approach 2:
The patent changes the spectral parameters of the emitted light by introducing a filter substance with specific absorption properties. This modifies the wavelength distribution of the phosphor-converted light, shifting the spectral power distribution to better align with the luminous efficiency function while maintaining the desired color temperature.
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 achieves a high color rendering index of at least 80 and feeling of contrast index of at least 110, improving light efficiency and appearance by minimizing visible filter presence and optimizing spectral overlap with eye sensitivity curves.
Implementation Method 1
at least one phosphor for partial or complete conversion of primary radiation into a longer-waved secondary radiation
Implementation Method 2
at least one filter substance for partial absorption of the secondary radiation
Data Source
AI summary
An optoelectronic semiconductor component is disclosed. In an embodiment, the semiconductor component includes at least one optoelectronic semiconductor chip for generating primary radiation in a near-ultraviolet or in a visible spectral range, at least one phosphor for partial or complete conversion of the primary radiation into a longer-waved secondary radiation which is in the visible spectral range and at least one filter substance for partial absorption of the secondary radiation, wherein the phosphor and the filter substance are closely connected to the semiconductor chip.