A liquid crystal display device includes: a lower substrate including a display unit and a non-display unit; an upper substrate opposing the lower substrate; a gate line and a data line disposed in the display unit of the lower substrate; a light shielding layer defining a pixel region of the lower substrate; a pixel electrode disposed in the pixel region of the lower substrate; a pixel transistor disposed in the display unit of the lower substrate and connected to the gate line, the data line, and the pixel electrode; a driving transistor disposed in the non-display unit of the lower substrate; a first protection layer disposed on the pixel transistor and the driving transistor; a shielding layer disposed on the first protection layer, the shielding layer overlapping at least one of the pixel transistor and the driving transistor; and a second protection layer disposed on the shielding layer.