Display device
Provided is a display device which comprises a substrate, an emission layer including a plurality of light-emitting elements to emit lights and disposed on the substrate, and a light control layer disposed on the emission layer, wherein the light control layer includes a light-transmitting film that transmits the lights, and a light-blocking film that blocks the lights, the light-transmitting film includes, a first low-refractive light-transmitting film disposed on the light-blocking film, and a first high-refractive light-transmitting film alternately disposed with the light-blocking film, and a refractive index of the first low-refractive light-transmitting film is smaller than a refractive index of the first high-refractive light-transmitting film.
1 . A display device comprising:
a substrate;
an emission layer including a plurality of light-emitting elements to emit lights and disposed on the substrate; and
a light control layer disposed on the emission layer,
wherein the light control layer includes a light-transmitting film that transmits the lights and a light-blocking film that blocks the lights,
wherein the light-transmitting film includes:
a first low-refractive light-transmitting film disposed on the light-blocking film; and
a first high-refractive light-transmitting film alternately disposed with the light-blocking film, and
wherein a refractive index of the first low-refractive light-transmitting film is smaller than a refractive index of the first high-refractive light-transmitting film.
2 . The display device of claim 1 , wherein the first low-refractive light-transmitting film overlaps the light-blocking film in a thickness direction of the substrate, and
the first high-refractive light-transmitting film does not overlap the light-blocking film in the thickness direction of the substrate.
3 . The display device of claim 1 , wherein the first low-refractive light-transmitting film is disposed in a non-open area, and the first high-refractive light-transmitting film is disposed in an open area.
4 . The display device of claim 1 , wherein the first high-refractive light-transmitting film is alternately arranged with the first low-refractive light-transmitting film.
5 . The display device of claim 1 , wherein a side surface of the first high-refractive light-transmitting film is in direct contact with a side surface of the first low-refractive light-transmitting film to form a first interface.
6 . The display device of claim 5 , wherein some of the lights are totally reflected at the first interface.
7 . The display device of claim 5 , wherein some of the lights are refracted at the first interface toward a front side.
8 . The display device of claim 1 , wherein an angle formed between a side surface and a lower surface of the first low-refractive light-transmitting film is 90 degrees.
9 . The display device of claim 1 , wherein a thickness of the first low-refractive light-transmitting film is smaller than a thickness of the light-blocking film in a thickness direction of the substrate, and
a thickness of the first high-refractive light-transmitting film is equal to a sum of the thickness of the first low-refractive light-transmitting film and the thickness of the light-blocking film.
10 . The display device of claim 9 , wherein the thickness of the first low-refractive light-transmitting film is 1.5 to 10 times less than the thickness of the light-blocking film in the thickness direction of the substrate, and
the thickness of the first low-refractive light-transmitting film is equal to or less than 10 μm in the thickness direction of the substrate.
11 . The display device of claim 1 , further comprises a touch sensor layer disposed between the emission layer and the light control layer,
wherein the first low-refractive light-transmitting film is disposed on the light-blocking film and spaced apart from the touch sensor layer in a thickness direction of the substrate, and
the light-blocking film overlaps a non-emission area and an emission area of the emission layer.
12 . The display device of claim 1 , wherein the refractive index of the first low-refractive light-transmitting film is equal to or less than 97% of the refractive index of the first high-refractive light-transmitting film.
13 . The display device of claim 12 , wherein a difference between the refractive index of the first low-refractive light-transmitting film and the refractive index of the first high-refractive light-transmitting film is equal to or greater than 0.05.
14 . The display device of claim 13 , wherein the refractive index of the first low-refractive light-transmitting film is equal to or less than 1.5.
15 . A display device comprising:
a substrate;
an emission layer including a plurality of light-emitting elements to emit lights and disposed on the substrate;
a touch sensor layer disposed on the emission layer; and
a light control layer disposed on the touch sensor layer,
wherein the light control layer includes a light-transmitting film that transmits the lights and a light-blocking film that blocks the lights,
wherein the light-transmitting film includes:
a first high-refractive light-transmitting film disposed in an open area;
a first low-refractive light-transmitting film disposed in a non-open area; and
a second low-refractive light-transmitting film,
wherein refractive indices of the first and second low-refractive light-transmitting films are smaller than a refractive index of the first high-refractive light-transmitting film, and
wherein the second low-refractive light-transmitting film is disposed on the first low-refractive light-transmitting film and the first high-refractive light-transmitting film.
16 . The display device of claim 15 , wherein
a side surface of the first high-refractive light-transmitting film is in direct contact with a side surface of the first low-refractive light-transmitting film to form a first interface, and
an upper surface of the first high-refractive light-transmitting film is in direct contact with a lower surface of the second low-refractive light-transmitting film to form a second interface.
17 . The display device of claim 16 , wherein
some of the lights are refracted at the first interface toward a front side, and
some others of the lights are refracted at the second interface toward a side surface.
18 . A display device comprising:
a substrate;
an emission layer including a plurality of light-emitting elements to emit lights and disposed on the substrate;
a touch sensor layer disposed on the emission layer; and
a light control layer disposed on the touch sensor layer,
wherein the light control layer includes a light-transmitting film that transmits the lights and a light-blocking film that blocks the lights,
wherein the light-transmitting film includes:
a first low-refractive light-transmitting film disposed in a non-open area;
a first high-refractive light-transmitting film disposed in an open area; and
a second high-refractive light-transmitting film,
wherein a refractive index of the first low-refractive light-transmitting film is smaller than refractive indices of the first and second high-refractive light-transmitting films, and
wherein the second high-refractive light-transmitting film is disposed on the first low-refractive light-transmitting film and the first high-refractive light-transmitting film.
19 . The display device of claim 18 , wherein
a side surface of the first low-refractive light-transmitting film is in direct contact with a side surface of the first high-refractive light-transmitting film to form a first interface, and
an upper surface of the first low-refractive light-transmitting film is in direct contact with a lower surface of the second high-refractive light-transmitting film to form a second interface.
20 . The display device of claim 19 , wherein some of the lights are refracted at the first interface and the second interface toward a front side.