A light-emitting device that emits output light, is a light-emitting device that includes: a light-emitting element that emits a primary light; and a wavelength converter that converts at least a portion of the primary light into a secondary light. The output light includes at least a portion of the secondary light. The output light has a light intensity greater than or equal to a predetermined value throughout an entire wavelength range of from 750 nm to 900 nm, inclusive. A ratio of a light intensity of the output light at 900 nm to a light intensity of the output light at 750 nm is greater than or equal to 0.2 and less than 3.0. The output light has a spectral luminosity of at least 0.1 lm/W and at most 10 lm/W.

The present invention relates to a light-emitting device having at least one or more light emission colors having a specific correlated color temperature, which includes a light-emitting element including a first luminescent material and a second luminescent material, in which the second luminescent material contains at least one or more phosphors and one or more other phosphors each having an emission peak in a different wavelength region; in at least one of the light emission colors having the specific correlated color temperature, when an emission intensity at a wavelength 1 where an emission intensity of an emission spectrum is maximum at 600 nm or more and 700 nm or less is A, and an emission intensity at 700 nm is C, C/A is 0.25 or less; and the one or more other phosphors include at least a phosphor containing a crystal phase having a specified composition.

A light engine with distinct light sources sharing at least one optic may employ scattering particles to change the illuminance line profiles of one or more of the light sources so that they are more uniformly mixed in the far-field. The scattering particles may be integrated into phosphor layers of specific light sources or may be disposed in a separate layer. The scattering particles may be tunable based on the particular characteristics of the light source, such as their spectral characteristics or their chemical mixing characteristics.

A white light emitting device with an efficiency of at least 230 lm/W at a blue LED chip input current density from 10 to 60 mA/mm.sup.2, preferably in the range from 15 to 40 mA/mm.sup.2 and more preferably in the range from 20 to 30 mA/mm.sup.2. The device comprises a substrate, at least one string of blue LED chips mounted on the substrate and a phosphor material composition. Said phosphor material composition comprises a narrow band red phosphor which generates light with a peak emission wavelength in a range from 625 nm to 635 nm. The weight percentages of the narrow band red phosphor are between 33 to 49 wt. % for a CCT of from 4000 to 6500K or in an amount of from 60 to 70 wt. % for a CCT of from 2700 to 3500K CCT.

The invention relates to a method for manufacturing an optoelectronic device (1) including an array of diodes (D1, D2, D3) and an array of colour conversion portions (P1, P2), including the following steps: providing the array of diodes (D1, D2, D3), and the upper electrode layers (E1, E2, E3); depositing a dielectric layer (26) having a substantially zero surface potential; applying a potential difference between an electrode (2) and the first upper electrode layers (E1), resulting in the formation of first patterns (M1) with non-zero surface potential in the dielectric layer (26); producing the first colour conversion portions (P1), by contacting the dielectric layer (26) with a colloidal solution (S1) containing first photoluminescent particles (p1).

A display device includes a first light emitting element group including at least one first light emitting element emitting a first light having a central wavelength greater than 450 nm and less than about 485 nm, a second light emitting element group including at least one second light emitting element emitting a second light having a central wavelength of about 450 nm or less, a third light emitting element group including at least one third light emitting element emitting a third light having a central wavelength of about 450 nm or less, and a color conversion layer disposed on the first, the second, and the third light emitting element group and including a first color conversion pattern which converts the second light emitted from the second light emitting element group and a second color conversion pattern which converts the third light emitted from the third light emitting element group.

A light-emitting module includes: a substrate; plurality of light sources disposed on the substrate, the plurality of light sources including a red light source, a green light source, a blue light source, and an infrared light source; at least one light-receiving element disposed on the substrate; and a lens disposed facing the plurality of light sources and the at least one light-receiving element. The red light source includes: a first light-emitting element configured to emit blue light, and a first phosphor configured to convert a wavelength of at least part of the blue light emitted from the first light-emitting element to emit red light. The at least one light-receiving element is configured to output biological photodetection information obtained by receiving light that has been emitted from at least one of the plurality of light sources and reflected or scattered by a biological body.

A display module includes a substrate and a plurality of pixels on the substrate. Each pixel of the plurality of pixels includes a self-luminescence layer, a first color conversion layer and a second color conversion layer on the self-luminescence layer, a first color filter and a second color filter on the first color conversion layer and the second color conversion layer, a third color filter adjacent to the first color filter and the second color filter, and a size of the third color filter is larger than a size of the first color filter and a size of the second color filter; and partition walls between the first color filter and the second color filter and between the second color filter and the third color filter, and blue dye on the partition walls.

A light emitting apparatus includes a substrate and at least one light emitting device disposed on the substrate and configured to emit light, wherein a luminous flux in a blue wavelength region is in the range of 0.01 times to 0.1 times the total luminous flux.

A display device may include a plurality of light emitting elements on a substrate and arranged in a matrix form along a first arrangement direction and a second arrangement direction crossing the first arrangement direction, and a first sub pixel area and a second sub pixel area each overlapping at least a portion of the plurality of light emitting elements, spaced from each other in a first direction, and extending in a second direction crossing the first direction. The second direction and the first arrangement direction may be non-parallel to each other.