An array substrate for a transflective liquid crystal display device which includes a substrate having a display region and a boundary region; a gate line disposed on the substrate; a first insulating layer disposed on the gate line; a data line disposed on the first insulating layer, the data line crossing the gate line and defining a pixel region with the gate line; a thin film transistor connected to the gate line and the data line; a second insulating layer disposed on the thin film transistor; a reflective plate disposed on the second insulating layer at the display region, the reflective plate being extended to the boundary region and having a transmission hole in the pixel region; a third insulating layer disposed on the reflective plate; and a pixel electrode disposed on the third insulating layer at the pixel region, the pixel electrode being connected to the thin film transistor.