Disclosed is a display device. A display device according to the present invention comprises: a display panel; a backlight unit located behind the display panel and providing light to the display panel; and a guide panel that is located at an edge of the display panel, and includes a panel support part located between the display panel and the backlight unit and an extension part extending from the panel support part and surrounding a side surface of the backlight unit. The backlight unit includes: a light guide plate; and a light source module located at a light incident part and irradiating at least one side surface of the light guide plate with light, and the panel support part includes a rib protruding toward the light source module and facing the front surface of the light source module.