Provided is a display apparatus. The display apparatus includes a base substrate, a first transistor disposed on the base substrate and including a first semiconductor layer including a first layer and a second layer disposed to come into contact with a first layer and including a compound made of at least two materials of a Group IV elements, a first control electrode overlapping the first semiconductor layer, a first input electrode connected to the first semiconductor layer, and a first output electrode connected to the first semiconductor layer, a second transistor and an organic light emitting diode.