A pixel unit array substrate and manufacturing, and a method of repairing a display device

The present invention discloses a pixel unit array substrate and manufacturing, and a method of repairing a display device to a display field, solves the problem of repairing damage to a thin film transistor array process limited to, a thin film transistor array process after the damage can not be repaired while reducing the capacitor thin film transistor caused by the standby, to ensure the product performance, improved product yield and product repair rate. The pixel unit comprises: a pixel electrode, the data line and the thin film transistor, further comprising: a spare thin film transistor whose source is isolated from the data line, a drain electrode and the pixel isolation; a first repair line, one end of the thin film transistor standby a source isolation region and an overlap; the other end of the source data line or a thin film transistor and there is an overlapping isolation region; a drain separator second repair line, one end of the thin film transistor and the standby overlap region; the other end of the pixel electrode a thin film transistor or the drain spacer and the overlap region.