A light emitting device includes: a light emitting element having a light emission peak wavelength in a range of 380 nm or more and 485 nm or less; a wavelength conversion member including a fluorescent material layer disposed on a light emission side of the light emitting element and containing a fluorescent material having a reflectance to light having a wavelength of 450 nm of 10% or less and a light emission peak wavelength in a range of 610 nm or more and 780 nm or less, and a dielectric multilayer film disposed on a light emission side of the fluorescent material layer.

The lighting device disclosed in the embodiment of the invention includes: a substrate including a recess; a light source on the substrate; a resin layer on the substrate; and a wavelength conversion layer on the resin layer. A portion of the resin layer is disposed in a recess of the substrate. A portion of the wavelength conversion layer is disposed on the recess of the substrate. The outermost surface of the portion of the resin layer disposed in the recess of the substrate may be located outside the inner surface of the wavelength conversion layer.

The present disclosure provides a spectrum packaging structure and a method for manufacturing the spectrum packaging structure. The spectrum packaging structure includes a substrate, a luminous body arranged on the substrate and an outer packaging layer for packaging the luminous body on the substrate. The luminous body includes a first CSP chip and at least one second CSP chip. The first CSP chip includes a purple light chip and a first packaging layer coating an outer surface of the purple light chip, the first packaging layer is a phosphor layer containing blue phosphor particles. The second CSP chip includes a blue light chip and a second packaging layer coating an outer surface of the blue light chip, the second packaging layer is a phosphor layer containing red phosphor particles and/or yellow-green phosphor particles.

A light emitting device comprises a light emitting element having a light emission peak wavelength in a range of 400 nm or more and 490 nm or less and a first fluorescent material having a light emission peak wavelength in a range of 570 nm or more and 680 nm or less, and emits light having a correlated color temperature being 1,950 K or less, an average color rendering index Ra being 70 or more, a full width at half maximum of a light emission peak having the maximum light emission intensity being 110 nm or less, and a ratio B/L of an effective radiance B to a luminance L being 0.151 or less, wherein the luminance of light emitted by the light emitting device in a range of 300 nm or more and 800 nm or less when B and L is as defined in the disclosure.

In an embodiment a method for producing a structured wavelength conversion layer includes providing a first wavelength conversion layer with wavelength converting properties such that electromagnetic radiation of a first wavelength range is converted into electromagnetic radiation of a second wavelength range, structuring of the first wavelength conversion layer into first regions and second regions, wherein the wavelength converting properties of the first wavelength conversion layer are impaired or removed in the first regions after structuring.

A display module is provided. The display module includes a substrate, a conductive light absorption layer provided on a surface of the substrate, and a plurality of pixels electrically coupled to the substrate through the conductive light absorption layer. Each of the plurality of pixels may include a first self-luminescence element, a second self-luminescence element and a third self-luminescence element, each emitting light of a same color, a first color conversion layer corresponding to a light emitting surface of the first self-luminescence element and a second color conversion layer corresponding to a light emitting surface of the second self-luminescence element, and a first color filter corresponding to the first color conversion layer and a second color filter corresponding to the second color conversion layer.

A light emitting device comprises: a solid-state light emitter which generates blue excitation light with a dominant wavelength from 440 nm to 470 nm; a yellow to green photoluminescence material which generates light with a peak emission wavelength from 500 nm to 575 nm; a broadband orange to red photoluminescence material which generates light with a narrowband peak emission wavelength from 580 nm to 620 nm; and a narrowband red manganese-activated fluoride phosphor which generates light with a peak emission wavelength from 625 nm to 635 nm. The device generates white light with a spectrum having a broad emission peak from about 530 nm to about 600 nm and a narrow emission peak and wherein the ratio of the peak emission intensity of the broad emission peak to the peak emission intensity of the narrow emission peak is at least 20%.

A lighting system is disclosed for the spatially evenly distributed emission of light from first, second and third light sources. The spectral ranges of the light emitted by the different light sources are different from each other. The lighting system includes: a holding layer or carrier layer, on which the light sources are arranged in groups each having one each of the first, second and third light sources; and a luminophore layer, which is arranged in the propagation direction of the light from the light sources and has a first, a second and a third luminescent-material film. The luminescent material of each luminescent-material film is induced to luminesce largely, more particularly exclusively, by means of the first, second or third light sources.

According to some embodiments of the present disclosure, there is provided a display device including a substrate, a light emitting element on the substrate and emitting first light, a wavelength conversion layer on the light emitting element and including wavelength conversion particles for converting the first light into second light, a first selective transmission film between the light emitting element and the wavelength conversion layer and reflecting the first light and the second light, which are incident from the wavelength conversion layer, and a second selective transmission film on the wavelength conversion layer and reflecting the first light incident from the wavelength conversion layer and transmitting the second light.

A display device includes: a first substrate; a plurality of light-emitting elements on the first substrate; a second substrate opposite to the first substrate, and including one face facing the first substrate, and an opposite face to the one face; a plurality of grooves at the opposite face of the second substrate; a plurality of wavelength conversion layers, each of the wavelength conversion layers being located in a corresponding groove of the plurality of grooves to convert a wavelength of light emitted from a corresponding light-emitting element of the plurality of light-emitting elements; and a plurality of color filters on the wavelength conversion layers, respectively.