Converter Carrier Layer Thermal Management in Optoelectronic Devices
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Solution Overview
Problem
Conventional converter carrier layers in optoelectronic devices, such as LEDs, suffer from inadequate heat dissipation, leading to heat build-up, reduced luminosity, and premature failure, especially in high-efficiency LEDs.
Innovation Solution
Incorporating a converter carrier layer made of an inorganic-organic hybrid material produced by hydrolysis and crosslinking of specific compounds, combined with converter particles, which effectively dissipates heat and converts primary radiation into secondary radiation, thereby preventing heat build-up and maintaining constant luminosity and chromaticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional converter carrier layers are used, then the device structure is simple and easy to manufacture, but heat dissipation is inadequate leading to heat build-up and reduced reliability
Solution Approach 1:
The patent applies composite materials by combining inorganic fillers (such as aluminum oxide, aluminum nitride, boron nitride, or silicon carbide particles) with an organic polymer matrix to create a converter carrier layer with enhanced thermal conductivity. This composite structure enables effective heat dissipation while maintaining the mechanical properties and ease of processing required for LED packaging, directly resolving the contradiction between reliability and temperature management.
2Use of energy by moving object
If high-efficiency LED converters are used to achieve high energy efficiency (up to 150 Im/W), then light yield is improved, but heat generation increases and cannot be dissipated efficiently by conventional carrier layers
Solution Approach 1:
The patent converts the harmful heat generated by high-efficiency LED converters into a manageable thermal flow by incorporating thermally conductive inorganic fillers into the carrier layer. These fillers create thermal pathways that guide the waste heat away from the converter particles, transforming the previously problematic heat accumulation into an efficiently managed thermal discharge process, thereby maintaining high energy efficiency without compromising thermal performance.
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 provides enhanced thermal conductivity (0.2 W/mK to 10.0 W/mK) in the converter carrier layer, ensuring efficient heat dissipation, prolonged service life, and consistent emission characteristics of optoelectronic devices.
Implementation Method 1
the converter carrier layer has a thermal conductivity of 0.2 W/mK to 10.0 W/mK
Implementation Method 2
Converter materials convert the radiation emitted by a radiation source into radiation having a changed, e.g., longer, wavelength
Implementation Method 3
an inorganic-organic hybrid material produced by hydrolysis, mutual condensation and crosslinking at least of a compound of Formulae I′ or I′′ and at least one compound of Formula II
Data Source
AI summary
An optoelectronic device includes a layer sequence having an active layer that emits electromagnetic primary radiation, and at least one converter carrier layer arranged in the beam path of the electromagnetic primary radiation. The at least one converter carrier layer includes converter particles and an inorganic-organic hybrid material and/or a silicate glass.