Display device
A display device according to the present disclosure may be provided with a light path conversion protrusion on a lower surface of a cover window to suppress external light even for light incident at a side viewing angle, thereby improving contrast and visibility. According to the present disclosure, side-view angle incident light may be converted into the same incident light as that of vertical incident light, thereby providing an effect capable of preventing the reflection of incident light from a viewing angle as well as the vertical incident light.
1. A display device, comprising:
a display panel on which an image is displayed;
an anti-reflection polarizing film disposed on the display panel; and
a cover window including a plurality of light path conversion protrusions disposed on the anti-reflection polarizing film,
wherein each of the plurality of light path conversion protrusions disposed to be isolated from one another in length and width directions of the cover window faces the display panel and has an inclined surface directing light entered from outside with less than 90 degrees with respect to the display panel to the 90 degrees and a flat bottom surface increasing a bonding area to facilitate bonding directly with the anti-reflection polarizing film, and a plurality of space portions is disposed between adjacent light path conversion protrusions.
2. The display device of claim 1 , wherein the anti-reflection polarizing film includes a linear polarizer and a circular polarizer.
3. The display device of claim 1 , wherein the light path conversion protrusions have a refractive index greater than that of the space portions.
4. The display device of claim 1 , wherein the light path conversion protrusions have a refractive index of 1.5 to 1.7.
5. The display device of claim 1 , further comprising a medium layer having a refractive index smaller than that of the light path conversion protrusions and filled in the space portions.
6. The display device of claim 5 , wherein the medium layer has a refractive index of 1.0 to 1.4.
7. The display device of claim 1 , wherein the light path conversion protrusions a gradually reducing width toward the display panel.
8. A display device, comprising:
a display panel on which an image is displayed;
an anti-reflection polarizing film disposed on the display panel;
a light path conversion layer including a plurality of light path conversion protrusions disposed on the anti-reflection polarizing film; and
a cover window disposed on the light path conversion layer,
wherein each of the plurality of light path conversion protrusions disposed to be isolated from one another in length and width directions faces the display panel and has an inclined surface directing light entered from outside with less than 90 degrees with respect to the display panel to the 90 degrees and a flat bottom surface increasing a bonding area to facilitate bonding directly with the anti-reflection polarizing film, and a plurality of space portions is disposed between adjacent light path conversion protrusions.
9. The display device of claim 8 , wherein the anti-reflection polarizing film includes a linear polarizer and a circular polarizer.
10. The display device of claim 8 , wherein the light path conversion layer includes a resin portion.
11. The display device of claim 10 , wherein the light path conversion protrusions have a refractive index greater than that of the space portions.
12. The display device of claim 8 , wherein the light path conversion protrusions have a refractive index of 1.5 to 1.7.
13. The display device of claim 10 , further comprising a medium layer filled in the space portions and having a refractive index smaller than that of the light path conversion protrusions.
14. The display device of claim 13 , wherein the medium layer has a refractive index of 1.0 to 1.4.
15. The display device of claim 10 , wherein the light path conversion layer further includes an optical film disposed between the light path conversion protrusions and the anti-reflection polarizing film.
16. The display device of claim 8 , wherein the light path conversion protrusions have a gradually reducing width toward the display panel.
17. A display device including a display panel displaying an image, comprising:
an anti-reflection polarizing film disposed on the display panel;
a cover window including a plurality of light path conversion protrusions disposed on the anti-reflection polarizing film, wherein each of the plurality of light path conversion protrusions disposed to be isolated from one another faces the display panel and has an inclined surface directing light entered from outside with less than 90 degrees with respect to the display panel to the 90 degrees and a flat bottom surface increasing a bonding area to facilitate bonding directly with the anti-reflection polarizing film; and
a plurality of space portions between adjacent light path conversion protrusions of the cover window protrusions,
wherein a difference in a refractive index between the space portions and the light path conversion protrusions is configured to suppress reflection of external light incident from 0 to 90 degrees with respect to a top surface of the display panel.
18. The display device of claim 17 , further comprising a medium layer filled in the space portions and having a refractive index smaller than that of the light path conversion protrusions.