A display device includes a first light emitting element diode and a second light emitting diode which are disposed on a first base substrate, a bank layer disposed under a second base substrate facing the first base substrate, including a first opening overlapping the first light emitting diode in a plan view and a second opening overlapping the second light emitting diode in a plan view, and having a first part and a second part, a transmitting layer disposed inside the first opening, and a first color conversion layer disposed inside the second opening. The first part and the second part have different thicknesses in a thickness direction of the second base substrate.