A display apparatus according to an embodiment can include a first electrode, a plurality of organic layers, a second electrode, and a metal layer disposed on a particular organic layer among the plurality of organic layers. The metal layer is configured to protect the particular organic layer from being damaged when it is exposed to a non-vacuum environment at least once during processes of stacking the organic layers on the first electrode and the second electrode on the organic layers in a vacuum environment, thereby suppressing a rise in the driving voltage of the display apparatus. Accordingly, the problems that the driving voltage of the display apparatus increases and the lifespan is shortened can be addressed.