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US 12,772,625 B2Granted
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).
Claims9
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%,
- wherein the polymer comprises scattering particles,
- the polymer comprises an acrylate and has a glass transition temperature Tg of 100° C. or less,
- the scattering particles are selected from the group of organopolysiloxanes and are present in an amount of more than 0.1 wt % and less than 8 wt %.
2 more elements
Dependencies are inferred from the claim text.