Display device

1 . A display device comprising:

a display part;

an outer part on the display part,

wherein the outer part includes a first layer and a second layer forming an interface with the first layer, and

wherein a refractive index of the first layer is lower than a refractive index of the second layer; and

wherein the first layer includes a light absorbing material and a low refractive material.

2 . The display device of claim 1 , further comprising a sensing part between the display part and the outer part, the sensing part including conductive patterns,

wherein the conductive patterns form sensing electrodes configured to sense a user input, and

wherein the first layer overlaps with the conductive patterns in a plan view.

3 . The display device of claim 2 , wherein the display part includes organic light emitting elements and a thin film encapsulation layer on the organic light emitting elements, and

wherein the sensing part is on the thin film encapsulation layer.

4 . The display device of claim 3 , further comprising a low reflection inorganic layer between the organic light emitting elements and the thin film encapsulation layer.

5 . The display device of claim 1 , further comprising sub-pixels forming sub-pixel areas while each is configured to emit light of one color,

wherein, in a plan view, the first layer overlaps with an area between the sub-pixel areas.

6 . The display device of claim 1 , wherein the low refractive material includes a monomer including a fluorine-based functional group.

7 . The display device of claim 6 , wherein the monomer includes at least one selected from the group consisting of 3-(perfluorohexyl) propyl epoxide, octafluoropentyl methacrylate, and heptadecafluorodecyl methacrylate.

8 . The display device of claim 6 , wherein the monomer is included by 5 wt % to 20 wt % with respect to a solid content of a material forming the first layer.

9 . The display device of claim 1 , wherein the low refractive material includes nano particles including hollow particles.

10 . The display device of claim 1 , wherein the second layer is a reflection control layer including a dye, a pigment, or a combination thereof.

11 . The display device of claim 1 , wherein the second layer is a color filter configured to allow light of one color to be selectively transmitted therethrough.

12 . The display device of claim 1 , further comprising sub-pixels forming sub-pixel areas while each is configured to emit light of one color,

wherein, in the display part, the sub-pixels include light emitting elements are configured to emit light of different colors.

13 . The display device of claim 1 , further comprising sub-pixels forming sub-pixel areas while each is configured to emit light of one color,

wherein, in the display part, the sub-pixels include light emitting elements are configured to emit light of a same color.

14 . The display device of claim 1 , wherein the display part includes a display base layer, and

wherein a side surface of the first layer is formed inclined to form an angle with respect to the display base layer.

15 . The display device of claim 14 , wherein the angle is in a range of 70 degrees to 90 degrees.

16 . The display device of claim 1 , wherein the display part includes a light emitting layer and a pixel defining layer defining a position of the light emitting layer, and

wherein the pixel defining layer overlaps with the first layer in a plan view, and protrudes from the first layer to form an offset.

17 . The display device of claim 1 , wherein a difference between the refractive index of the first layer and the refractive index of the second layer is in a range of 0.10 to 0.55.

18 . An electronic device comprising:

the display device of claim 1 .