The present disclosure provides a display unit and a method for manufacturing the display unit, and an array substrate. The display unit includes a first electrode; a second electrode opposite to the first electrode; and a passivation layer, an auxiliary electrode and a light emitting functional layer between the first electrode and the second electrode, the passivation layer, the auxiliary electrode and the light emitting functional layer being disposed from the first electrode to the second electrode in sequence. The first electrode is electrically connected to the auxiliary electrode. One of the first electrode and the second electrode is transflective while the other one of the first electrode and the second electrode is transflective or reflective, and a first cavity is formed between the first electrode and the second electrode.