Display device

A display device comprising:

• a display panel;
• a light source providing light to the display panel;
• a quadrangular diffuser plate located between the display panel and the light source;
• and
• a guide including a side part covering four lateral sides of the diffuser plate, and a protruding inner part on which the diffuser plate is seated,
• wherein one lateral side of the diffuser plate includes a groove portion and a corresponding inner side of the side part of the guide facing the one lateral side of the diffuser plate includes a protrusion portion which is inserted into the groove portion,
• wherein an entirety of the one lateral side of the diffuser plate excluding the groove portion is flat, and an entirety of the corresponding inner side of the side part of the guide excluding the protrusion portion is flat and parallel to the entirety of the one lateral side of the diffuser plate excluding the groove portion,
• wherein when the entirety of the one lateral side of the diffuser plate excluding the groove portion is in contact with the corresponding inner side of the side part of the guide, a gap exists between the protrusion portion and the groove portion, and another gap exists between remaining three lateral sides of the diffuser plate and the side part of the guide,
• wherein a first center line of the diffuser plate passes through a center of the diffuser plate,
• wherein a second center line of the protrusion portion passes through a center of the protrusion portion,
• wherein the first center line of the diffuser plate is a different line than the second center line, and
• wherein the first center line of the diffuser plate passes through the groove portion of the diffuser plate and the protrusion portion of the guide.