A display device (2, 2A), comprising: a display panel; a light source that emits light; a light guide plate comprising a lateral surface that receives the light from the light source, wherein the light source is configured to emit the light to the lateral surface from a main surface to a back surface of the display panel; a supporting member provided between a peripheral portion (6a - 6d) of the display panel and a peripheral portion (20a - 20d) of the light guide plate and that supports the peripheral portion (6a - 6d) of the display panel; a reflective sheet (22, 22A) disposed so as to cover a back surface of the light guide plate on an opposite side of the main surface of the light guide plate and that comprises an opening (58, 58A) at a position corresponding to the peripheral portion (20a - 20d) of the light guide plate; and a back surface enclosure disposed so as to oppose the reflective sheet (22, 22A), the display device being characterized in that the back surface enclosure comprises: a first fixing part (60, 60A) disposed on the back surface enclosure, wherein the peripheral portion of the light guide plate exposed through the opening (58, 58A) of the reflective sheet is interposed between the first fixing part (60, 60A) and the supporting member; and a second fixing part (62, 62A) disposed on the back surface enclosure, wherein the peripheral portion of the light guide plate covered by the reflective sheet (22, 22A) is interposed between the second fixing part (62, 62A) and the supporting member, wherein the height of the first fixing part (60, 60A) from the back surface enclosure is higher than the height of the second fixing part (62, 62A) from the back surface enclosure, the difference between the height of the first fixing part (60, 60A) and the height of the second fixing part (62, 62A) being greater than the thickness of the reflective sheet. a display panel; a light source that emits light; a light guide plate comprising a lateral surface that receives the light from the light source, wherein the light source is configured to emit the light to the lateral surface from a main surface to a back surface of the display panel; a supporting member provided between a peripheral portion (6a - 6d) of the display panel and a peripheral portion (20a - 20d) of the light guide plate and that supports the peripheral portion (6a - 6d) of the display panel; a reflective sheet (22, 22A) disposed so as to cover a back surface of the light guide plate on an opposite side of the main surface of the light guide plate and that comprises an opening (58, 58A) at a position corresponding to the peripheral portion (20a - 20d) of the light guide plate; and a back surface enclosure disposed so as to oppose the reflective sheet (22, 22A), the display device being characterized in that the back surface enclosure comprises: a first fixing part (60, 60A) disposed on the back surface enclosure, wherein the peripheral portion of the light guide plate exposed through the opening (58, 58A) of the reflective sheet is interposed between the first fixing part (60, 60A) and the supporting member; and a second fixing part (62, 62A) disposed on the back surface enclosure, wherein the peripheral portion of the light guide plate covered by the reflective sheet (22, 22A) is interposed between the second fixing part (62, 62A) and the supporting member, a first fixing part (60, 60A) disposed on the back surface enclosure, wherein the peripheral portion of the light guide plate exposed through the opening (58, 58A) of the reflective sheet is interposed between the first fixing part (60, 60A) and the supporting member; and a second fixing part (62, 62A) disposed on the back surface enclosure, wherein the peripheral portion of the light guide plate covered by the reflective sheet (22, 22A) is interposed between the second fixing part (62, 62A) and the supporting member, wherein the height of the first fixing part (60, 60A) from the back surface enclosure is higher than the height of the second fixing part (62, 62A) from the back surface enclosure, the difference between the height of the first fixing part (60, 60A) and the height of the second fixing part (62, 62A) being greater than the thickness of the reflective sheet.