Thin film transistor array substrate and manufacturing method thereof

Abstract

A substrate including gate wirings including gate line and a gate electrode disposed on the substrate, a storage line disposed on the same layer as the gate wirings, a gate insulating layer disposed on the gate wirings and the storage line, an oxide semiconductor layer pattern disposed on the gate insulating layer, data wirings including a data line crossing the gate line, a source electrode disposed on one side of the oxide semiconductor layer pattern, and a drain electrode disposed on another side of the oxide semiconductor layer, and an etch stopper including a first etch stopper portion disposed between the storage line and the data line and partially overlapping both the data line and the storage line.