Light emitting component, a light emitting device and a sheet-like material
AssigneeAvantama AG
InventorNorman Albert Lüchinger
Life of this patent
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Abstract
A light emitting component comprising a light source (10) for emitting blue light (aa), a first layer (1) comprising a red phosphor, and a second layer (2) comprising luminescent crystals (20). Upon absorption of the light emitted by the light source (10), the luminescent crystals (20) emit light of a wavelength in the green light spectrum (cc). The first layer (1) is arranged adjacent to the light source (10). The second layer (2) is arranged remotely from the first layer (1).
Claims24
A light emitting component comprising
- a light source for emitting blue light,
- a first layer comprising a red phosphor,
- wherein upon absorption of the blue light, the red phosphor emits light in the red light spectrum, and
- wherein the first layer is arranged adjacent to the light source,
- a second layer, said second layer comprising luminescent crystals, a solid polymer and scattering particles,
- wherein the luminescent crystals are of perovskite structure,
- wherein upon absorption of the light emitted by the light source, the luminescent crystals emit light of a wavelength in the green light spectrum,
- wherein the luminescent crystals and the scattering particles are embedded in the solid polymer,
- wherein the second layer has a haze h2 of 20≤h2≤70%, and
- wherein the second layer is arranged remotely from the first layer.
A light emitting component comprising
- a light source for emitting blue light,
- a first layer comprising a red phosphor,
- wherein upon absorption of the blue light, the red phosphor emits light in the red light spectrum, and
- wherein the first layer is arranged adjacent to the light source,
- a second layer, said second layer comprising luminescent crystals and a cross-linked solid polymer,
- wherein the luminescent crystals are of perovskite structure,
- wherein upon absorption of the light emitted by the light source, the luminescent crystals emit light of a wavelength in the green light spectrum,
- wherein the luminescent crystals are embedded in the cross-linked solid polymer,
- wherein the second layer has a haze h2 of 20≤h2≤70%,
- wherein the second is arranged remotely from the first layer.
A self-supporting film, comprising luminescent crystals embedded in a polymer,
- wherein the luminescent crystals are of perovskite structure and emit green and/or red light in response to excitation by light of a wavelength shorter than the emitted light, and
- wherein the self-supporting film has a haze h2 of 20≤h2≤70%, in particular h2<80%, in particular of h2<70%, very particular of h2<60%.
Dependencies are inferred from the claim text.