Display device

A display device, comprising:

• a display panel;
• a window positioned on the display panel, having a first surface that faces the display panel and an opposing second surface;
• and
• an anti-reflection layer on the second surface of the window, the anti-reflection layer including an anti-reflection coating having a plurality of layers, the plurality of layers having different thicknesses, wherein:
• the plurality of layers includes a first layer, a second layer, a third layer, and a fourth layer in that order from the window, and
• the third and fourth layers are each thicker than a combined thickness of the first and second layers.