An electrowetting display device includes a base substrate, a hydrophobic layer disposed on the base substrate and including at least about 49 atomic percent (at %) of fluorine atoms in a surface thereof, a wall disposed on the base substrate which partitions a pixel area, and an electrowetting layer that includes a first fluid and a second fluid, which are disposed in the pixel area and are immiscible with each other. The second fluid has an electrical conductivity or a polarity. The electrowetting display device further includes an electronic device is configured to apply an electric field to the electrowetting layer to control the electrowetting layer.