A display device comprises: a pixel circuit layer, a bonding electrode on the pixel circuit layer, a first electrode on the bonding electrode, a light-emitting element on the first electrode and configured to emit light of a first color, a second electrode on the light-emitting element, a distributed Bragg reflective layer on the second electrode, and a color filter on the distributed Bragg reflective layer and transmitting light of a second color.

Provided is a near-infrared light emitting device including a solid-state light emitting element that emits blue primary light, a wavelength converter that converts the primary light into near-infrared wavelength-converted light, an organic polymer member through which mixed light of the primary light and the wavelength-converted light is transmitted. The organic polymer member has a thickness of 3 m or more and less than 300 m, a light transmittance of less than 0.1% at a wavelength of 400 nm or less, a light transmittance of less than 1% at or below a wavelength of the emission peak of the primary light, and a light transmittance of less than 30% at a wavelength of 500 nm or less, a light transmittance of 75% or more and less than 100% within a wavelength range of 750 nm or more and less than 1,100 nm.

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 display panel and a display device are disclosed. The display panel includes an underlay substrate, a light emitting functional layer, a light shielding layer, a light extraction layer, and a light filter layer. The light emitting functional layer includes a plurality of light emitting units. The light shielding layer includes a plurality of first apertures. The first apertures are disposed to correspond to the light emitting units. The light extraction layer covers sidewalls of the first apertures and comprises a plurality of second apertures. The light filter layer includes a plurality of light filter units. The light filter units are filled in the second apertures, and a refractive index of the light extraction layer is less than a refractive index of the light filter unit.

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 semiconductor nanoparticle, a method of producing the semiconductor nanoparticle, and an electronic device including the semiconductor nanoparticle. The semiconductor nanoparticle includes silver, indium, gallium, and sulfur, with a molar ratio of gallium to indium (Ga/In) of greater than or equal to about 0.8:1 and less than or equal to about 20:1. The semiconductor nanoparticle is substantially free of copper and is configured to emit red light. The emission peak wavelength of the red light is greater than or equal to about 600 nm and less than or equal to about 650 nm, with a full width at half maximum (FWHM) of greater than or equal to about 5 nm and less than or equal to about 90 nm.

A display device includes a display area in which a plurality of pixels, each including a plurality of pixel electrodes spaced apart from each other, are disposed. A first light blocking layer is disposed in the display area and includes a plurality of holes overlapping the plurality of pixel electrodes. A plurality of color filters is disposed on the first light blocking layer and respectively corresponds to the plurality of holes. A second light blocking layer is disposed on the color filter and corresponds to the pixel electrodes of some of the plurality of pixels. The second light blocking layer surrounds the pixel electrodes of some of the plurality of pixels in a plan view and includes a plurality of light blocking patterns having different widths.

Disclosed are a display panel and a display device. The display panel is provided with an display region and a peripheral region, and includes a display substrate and at least one alignment mark disposed in the peripheral region. The display substrate is sequentially provided with a first packaging layer, a light-shielding layer, and a second packaging layer at a side, distal to the base substrate, of a second electrode layer. The light-shielding layer is provided with an opening hole, and a distance between a medial edge of the opening hole and a first end of the light-shielding layer is greater than a distance between a lateral edge of the opening hole and a second end of the light-shielding layer.

A display device includes a display panel in which a plurality of pixels are arranged side by side, a micro lens array disposed on the display panel and refracting light emitted from each pixel according to a chief ray angle defined for each pixel, and a window disposed on the micro lens array.

A display device includes a first substrate on which a first sub pixel area, a second sub pixel area, and a third sub pixel area are respectively defined; a light emitting diode on the first substrate; a first refractive index layer corresponding to the first sub pixel area; a second refractive index layer corresponding to the second sub pixel area; a third refractive index layer corresponding to the third sub pixel area; and a protection layer on the first, second, and third refractive index layers, wherein at least two of the first refractive index layer, the second refractive index layer, and the third refractive index layer have different refractive indices.