The present invention relates to the technical field of communications. Disclosed are a display device and manufacturing method thereof. The display device comprises a housing (12), a display panel (11) and a light-transmitting cover plate (13); the display panel (11) is disposed in the housing (12) to form a display area (14) constituted by the display panel (11) and a frame area (15) surrounding the display panel (11); the light-transmitting cover plate (13) covers the housing (12) to form the outer surface of the display device; the light-transmitting cover plate (13) has a first light-transmitting part (131) and a second light-transmitting part (132); the first light-transmitting part (131) corresponds to the display area (14), and the second light-transmitting part (132) corresponds to the frame area (15); the light emitted by the display panel (11) transmits outward through the first light-transmitting part (131) and the second light-transmitting part (132); the outer surface (1322) of the second light-transmitting part (132) is provided with an optical part (134); the optical part (134) is used to change the exit direction of the light emitted by the display panel (11) through the second light-transmitting part (132) so as to enable the direction of the light transmitted from the second light-transmitting part (132) to be the same as the direction of the light transmitted from the first light-transmitting part (131).