The invention discloses an array base plate, a liquid crystal display and a manufacturing method for the array base plate. The array base plate comprises a substrate base plate; a grid line, a data wire, a thin film transistor, a pixel electrode, an active layer, a passivation layer and a grid insulating layer are formed on the substrate base plate; the thin film transistor comprises a grid electrode connected with the grid line, a source electrode connected with the data wire and a drain electrode connected with the pixel electrode; the grid insulating layer is formed above the grid electrode; the passivation layer is arranged among the active layer, the source electrode and the drain electrode; the passivation layer is provided with a source electrode through hole and a drain electrode through hole; and the source electrode and the drain electrode are respectively connected with the active layer through the source electrode through hole and the drain electrode through hole. According to the technical scheme, the active layer, the passivation layer and the grid insulating layer are formed by one-time composition, so that the composition number is reduced and the production efficiency is improved; and meanwhile, the array base plate structure in which the passivation layer is positioned above the active layer is realized, and damage to a thin film transistor (TFT) channel when the source electrode and the drain electrode are formed is avoided.