The present disclosure provides a display device, including a light guide plate having a main body part including a first side and a second side opposite to each other and a light incident side connected to the first side and the second side and a first protrusion part and a second protrusion part disposed at the first side and the second side respectively, and a plurality of light sources. A length of the first protrusion part is greater than a length of the second protrusion part. The light sources are adjacent to the light incident side, and the distance between the light source closest to the first protrusion part and the first protrusion part is less than the distance between the light source closest to the second protrusion part and the second protrusion part in a first direction.