Color conversion layer and display apparatus having the same
AssigneeNexdot
InventorsMarc Pousthomis, Michele D'Amico, Yu-Pu Lin
Life of this patent
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Abstract
Disclosed is a color conversion layer including at least one light emitting material including at least one composite particle surrounded partially or totally by at least one surrounding medium; wherein the light emitting material is configured to emit light in response to an excitation and the at least one composite particle includes a plurality of nanoparticles encapsulated in an inorganic material; and wherein the inorganic material has a difference of refractive index compared to the at least one surrounding medium superior or equal to 0.02 at 450 nm. Also disclosed is a display apparatus.
Claims27
A color conversion layer (4) comprising at least one light emitting material (7) comprising at least one composite particle (1) surrounded partially or totally by at least one surrounding medium (71);
- wherein said at least one light emitting material (7) is configured to emit a secondary light in response to an excitation and the at least one composite particle (1) comprises a plurality of nanoparticles (3) encapsulated in an inorganic material (2);
- wherein said inorganic material (2) has a difference of refractive index compared to the at least one surrounding medium (71) superior or equal to 0.02 at 450 nm;
- and
- wherein a loading charge of nanoparticles (3) in a composite particle (1) is at least 10%,
- said loading charge being the mass ratio between the mass of nanoparticles comprised in a composite particle and the mass of said composite particle.
A display apparatus (230) comprising:
- a. at least one light source (231);
- b. a rotating wheel (233) comprising at least two zones, wherein at least one zone comprises at least one color conversion layer (4) comprising at least one light emitting material (7) comprising at least one composite particle (1) surrounded partially or totally by at least one surrounding medium (71);
- wherein said at least one light emitting material (7) is configured to emit a secondary light in response to an excitation and the at least one composite particle (1) comprises a plurality of nanoparticles (3) encapsulated in an inorganic material (2);
- wherein said inorganic material (2) has a difference of refractive index compared to the at least one surrounding medium (71) superior or equal to 0.02 at 450 nm;
- and
- wherein a loading charge of nanoparticles (3) in a composite particle (1) is at least 10%, said loading charge being the mass ratio between the mass of nanoparticles comprised in a composite particle and the mass of said composite particle;
- and
- c. a modulating optical system (236);
- wherein the light source (231) is configured to provide excitation for the at least one color conversion layer (4) and wherein the modulating optical system (236) is configured to reflect the light emitted by the rotating wheel (233).
Dependencies are inferred from the claim text.