A display device including a display unit having a first region, which is flat, and second regions, which are curved, and a touch sensor layer disposed on the display unit. The touch sensor layer includes a high refractive index layer having a first refractive index and a planarization layer disposed on the high refractive index layer and having a second refractive index, which is smaller than the first refractive index, and the high refractive index layer includes pattern parts.