A display device and a manufacturing method thereof are provided. The display device includes a display area and a non-display area. The display device includes a substrate, an element layer, an electrode pattern layer, a photoresist pattern layer, and a light-emitting element. The element layer is disposed on the substrate. The electrode pattern layer is disposed on the element layer, and the electrode pattern layer includes multiple electrodes. The photoresist pattern layer is disposed on the electrode pattern layer, and the photoresist pattern layer includes a first photoresist pattern disposed corresponding to the display area and corresponding to the electrodes; a second photoresist pattern disposed corresponding to the non-display area and between the electrodes. The light-emitting element is disposed on the photoresist pattern layer and is electrically connected to the electrodes of the electrode pattern layer.