Display panel and method for manufacturing the same

1. A display panel, comprising:

a display device comprising a plurality of pixels;

a first anti-reflection layer over the pixels of the display device, wherein the first anti-reflection layer comprises a first structural layer including a plurality of first protrusion structures opposite to the display device, and a first optical layer in contact with the first structural layer, and a surface of the first optical layer is engaged with the first protrusion structures;

a cover layer over the first optical layer of the first anti-reflection layer; and

a second anti-reflection layer between the first anti-reflection layer and the cover layer, wherein the second anti-reflection layer comprises a second structural layer including a plurality of second protrusion structures facing the first anti-reflection layer.

2. The display panel of claim 1 , wherein the display device comprises an organic light-emitting diode (OLED) device, and each of the pixels comprises an anode, an organic light-emitting layer over the anode, and a cathode over the organic light-emitting layer.

3. The display panel of claim 1 , wherein a refractive index of the first optical layer is smaller than a refractive index of the first structural layer.

4. The display panel of claim 1 , further comprising a thin film encapsulation between the display device and the first anti-reflection layer.

5. The display panel of claim 4 , further comprising a touch input device between the thin film encapsulation and the cover layer.

6. The display panel of claim 5 , further comprising a polarizer between the touch input device and the cover layer.

7. The display panel of claim 1 , wherein the second anti-reflection layer further comprises a second optical layer in contact with the second structural layer, and a surface of the second optical layer is engaged with the second protrusion structures.

8. The display panel of claim 7 , wherein a refractive index of the second optical layer is smaller than a refractive index of the second structural layer.

9. A display panel, comprising:

an organic light-emitting diode (OLED) device comprising a plurality of pixels for emitting lights, wherein each of the pixels comprises an anode, an organic light-emitting layer over the anode, and a cathode over the organic light-emitting layer;

a first anti-reflection layer over the cathodes of the pixels of the OLED device, wherein the first anti-reflection layer comprises a first structural layer including a plurality of first protrusion structures opposite to the cathode, and a first optical layer in contact with the first structural layer, and a surface of the first optical layer is engaged with the first protrusion structures, and wherein the first anti-reflection layer is configured to inhibit reflection of incident lights and to pass the lights emitted from the pixels, and a transmittance of the first anti-reflection layer for the lights emitted from the pixels is greater than 50%; and

a second anti-reflection layer over the first anti-reflection layer, wherein the second anti-reflection layer is configured to inhibit reflection of incident lights and to pass the lights emitted from the pixels, and a transmittance of the second anti-reflection layer for the lights emitted from the pixels is greater than 50%.

10. The display panel of claim 9 , wherein a refractive index of the first optical layer is smaller than a refractive index of the first structural layer.

11. The display panel of claim 9 , wherein the second anti-reflection layer comprises a second structural layer including a plurality of second protrusion structures facing the first anti-reflection layer.

12. The display panel of claim 11 , wherein the second anti-reflection layer further comprises a second optical layer in contact with the second structural layer, and a surface of the second optical layer is engaged with the second protrusion structures.

13. The display panel of claim 12 , wherein a refractive index of the second optical layer is smaller than a refractive index of the second structural layer.

14. A method for manufacturing a display panel, comprising:

forming a display device;

forming a photo-sensitive material over the display device;

imprinting a plurality of protrusion structures in a surface of the photo-sensitive material with a mold;

optically irradiating the photo-sensitive material;

removing the mold from the photo-sensitive material to form an anti-reflection layer having the plurality of protrusion structures;

forming an optical layer over the protrusion structures, wherein the optical layer is in contact with and engaged with the protrusion structures; and

forming a second anti-reflection layer comprising a second structural layer including a plurality of second protrusion structures facing the anti-reflection layer, and a second optical layer in contact with and engaged with the second protrusion structures.