1. A display device comprising:a display module;
a cover that covers a rear surface of the display module;
a main circuit board placed in an internal space formed between the cover and the rear surface of the display module;
a flexible wiring member that mutually connects the display module and the main circuit board;
an operational member having an operational part exposed to an outside of the cover, the operational member passing through the cover and engaging an engagement part provided at the main circuit board; and
a tentative placement structural part disposed on the rear surface of the display module;
wherein the main circuit board is fixed to the cover by the operational member in a state in which the main circuit board is not fixed to the display module; and
wherein the tentative placement structural part restricts movement of the main circuit board with respect to the display module in directions other than a direction in which the main circuit board moves toward the cover.