Enhanced Resin Composition for Light-Emitting Devices
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Summary
Problems
Resin compositions used in light-emitting devices face challenges in achieving both mechanical strength and light reflectivity due to the incorporation of unavoidable impurities like iron in wollastonite, which can absorb light and reduce light-extraction efficiency.
Innovation solutions
A filling material is developed with a base material containing a Group II element, coated with a second inorganic compound having a different refractive index, which is dispersed in a light-transmissive resin, enhancing mechanical strength and light reflectivity by optimizing the refractive index differences between the base material, coating material, and resin.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If wollastonite containing iron impurities is used as a filling material, then mechanical strength is improved, but light reflectivity decreases due to light absorption by iron components
Why choose this principle:
The filling material is segmented into two distinct components: a base material (wollastonite) providing mechanical strength and a coating material providing light reflectivity. This segmentation allows each component to fulfill its specific function without compromising the other, resolving the contradiction between strength and light reflectivity
Principle concept:
If wollastonite containing iron impurities is used as a filling material, then mechanical strength is improved, but light reflectivity decreases due to light absorption by iron components
Why choose this principle:
A composite filling material is created by coating wollastonite particles with a light-reflecting material. This composite structure combines the high mechanical strength of wollastonite with the high light reflectivity of the coating material, simultaneously achieving both improved strength and maintained light reflectivity
Application Domain
Data Source
AI summary:
A filling material is developed with a base material containing a Group II element, coated with a second inorganic compound having a different refractive index, which is dispersed in a light-transmissive resin, enhancing mechanical strength and light reflectivity by optimizing the refractive index differences between the base material, coating material, and resin.
Abstract
A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.