The invention discloses a pixel unit, an array substrate, a liquid crystal panel, a display device and manufacturing methods thereof, relating to the technical field of liquid crystal display and aiming to improve a pixel aperture opening ratio, reduce the power consumption and improve the display effect. The pixel unit comprises a thin film transistor, a pixel electrode and a common electrode; the thin film transistor comprises a grid electrode, a grid insulating layer arranged on the grid electrode, an active layer arranged on the grid insulating layer, a source electrode and a drain electrode arranged on the active layer, and a passivation layer arranged on the source electrode and the drain electrode, wherein the common electrode is directly arranged on the passivation layer; and the pixel electrode is arranged below the passivation layer and is connected with the drain electrode of the thin film transistor. According to the array substrate, the liquid crystal panel, the display device and the manufacturing methods thereof, a visual angle can be improved, the power consumption is reduced, the aperture opening ratio is improved and further the display quality can be improved. The pixel unit, the array substrate, the liquid crystal panel and the display device can be used for liquid crystal display.