A color conversion substrate comprising: a base substrate including a display area, a peripheral area positioned around the display area, and a sealing area positioned around the peripheral area; a color filter layer in the display area under the base substrate; a color conversion layer including a plurality of color conversion parts spaced apart from each other on a bottom surface of the color filter layer; a light blocking member in the peripheral area and the sealing area under the base substrate and including light blocking layers, wherein the light blocking layers overlap each other in a first direction that is a thickness direction of the base substrate and extend in a second direction perpendicular to the first direction; and a column spacer on a bottom surface of the light blocking member and extending in the second direction to be in the peripheral area and the sealing area.

A display device includes display area; a non-display area; a display substrate; and a color conversion substrate disposed on the display substrate, the display substrate includes a first base portion, and a light emitting element disposed in the display area on the first base portion, the color conversion substrate includes a second base portion facing the first base portion, and a color filter layer disposed between the second base portion and the light emitting element, the display area includes a first light emitting area emitting first light, the color filter layer includes a first color filter disposed in the first light emitting area, and the first color filter includes at least two layers.

A color conversion substrate includes first, second, and third light emitting areas, and a light blocking area surrounding the first, second, and third light emitting area, a first color filter layer overlapping the first light emitting area, and having a first opening exposing a portion of the substrate, a second color filter layer under the substrate and the first color filter layer, overlapping the second light emitting area, and having a second opening exposing a portion of the first color filter layer, and a third color filter layer under the substrate and the second color filter layer, overlapping the first light emitting area, and having a third opening exposing a portion of the second color filter layer and a fourth opening exposing a portion of the first color filter layer.

An OLED display panel and a display device are provided. A photoresist structure of a color filter layer is a stack of two defining layers, a sloped surface is defined between corresponding defining areas of two defining layers, and a color resist unit of the color filter layer is formed in corresponding color resist defining areas and corresponds to a light-emitting unit, which reduces a usage of color filter materials and prevents solvent volatilizing to the environment by using solvent-free color filter materials.

A display device includes a substrate, and unit pixels provided in the substrate, and including sub-pixels each having a light-emitting element emitting light, and photo-sensing pixels each having a light-receiving element outputting a sensing signal corresponding to the light. Each of the sub-pixels may include an emission area emitting the light, and each of the photo-sensing pixels may include a light-receiving area receiving the light. The emission area and the light-receiving area may be provided in the substrate to be spaced apart from each other. Each of the emission area and the light-receiving area may have a shape of a quadrangular plane.

A display device includes a substrate including a display area including a light emitting area, and a peripheral area surrounding at least a portion of the display area, a first light emitting element disposed in the light emitting area on the substrate and emitting a first light, a light guide layer disposed on the first light emitting element, and transmitting a second light incident from the peripheral area to the display area, a first low refractive layer disposed on the light guide layer and having a refractive index smaller than a refractive index of the light guide layer, a second low refractive layer disposed under the light guide layer and having a refractive index smaller than a refractive index of the light guide layer and a first light control layer disposed on the first low refractive layer and having a first opening exposing the light emitting area.

A display panel includes a first substrate including a first base substrate, a second substrate and a filling pattern. The first base substrate includes a display area including a plurality of pixel areas for image display and a non-display area around the display area, and an align key pattern including an opaque material in a part of the non-display area. The second substrate includes a second base substrate overlapping the first base substrate and including a transparent material, a light blocking structure in the non-display area, and a hole overlapping the align key pattern and penetrating the light blocking structure. The filling pattern is configured to fill the hole.

A display device including: a unit pixel area including a light blocking area on a substrate comprising a first light blocking area and a second light blocking area, the first pixel area comprises: a first color conversion layer on a light emitting element; and a first color filter on the first color conversion layer, the second pixel area comprises: a second color conversion layer on the light emitting element; and a second color filer on the second color conversion layer, the third pixel area comprises: a transmissive layer on the light emitting element; and a third color filter on the transmissive layer, the first light blocking area overlaps the first color filter, the second color filter, and the third color filter, and the second light blocking area overlaps two color filters selected from the first color filter, the second color filter, and the third color filter.

A display device includes a display panel including first and second areas each including a plurality of element areas and a peripheral area, a first light blocking pattern disposed on the display panel and overlapping the second area, and a second light blocking pattern disposed on the display panel, overlapping the second area, and disposed farther away from the display panel than the first light blocking pattern. Each of first, second and third element areas of the second area includes a plurality of light emitting areas and a non-light-emitting area disposed between the light emitting areas, the first light blocking pattern overlaps the non-light-emitting area of the second element area, and the second light blocking pattern overlaps the non-light-emitting area of the first element area and the non-light-emitting area of the third element area.

Embodiments of the present application provide a display panel and a fabrication method thereof. The display panel includes an array substrate, a pixel defining layer, an encapsulation layer, and a black matrix. The pixel defining layer is disposed on the array substrate, the pixel defining layer is formed with a plurality of pixel pits, and the plurality of pixel pits have a first predetermined shape. The encapsulation layer is disposed on the pixel defining layer, and the black matrix is disposed on the encapsulation layer. The black matrix is formed with a plurality of color filter pits, the plurality of color filter pits have a second predetermined shape, and the plurality of color filter pits correspond to the plurality of pixel pits.