A dual mode display apparatus according to the inventive concept includes a lower substrate, a first lower electrode on the lower substrate, a light switching layer on the first lower electrode, a first upper electrode on the light switching layer, a passivation layer on the first upper electrode, a contact plug connected to the first upper electrode and penetrating the passivation layer, a second lower electrode on the contact plug and the passivation layer, an organic light-emitting layer on the second lower electrode, a second upper electrode on the organic light-emitting layer, and an upper substrate on the second upper electrode.