A display device is provided and includes: a display panel; and a circuit board electrically connected to the display panel and including: a substrate; a first conductive layer disposed on the substrate and including a first connecting pad and a second connecting pad; a second conductive layer disposed on and electrically connected to the second connecting pad; a first electronic component disposed on and electrically connected to the first connecting pad; and a second electronic component disposed on the second conductive layer and electrically connected to the second connecting pad through the second conductive layer. The first connecting pad has a first thickness. A total thickness of the second connecting pad and the second conductive layer is a second thickness. The second thickness is greater than the first thickness. A ratio of the second thickness to the first thickness ranges from 1.2 to 5000.