The present invention provides a liquid crystal display that enables to enhance the resolution of a display screen, to narrow a flame portion, and to simplify the production process of an array substrate. The present invention provides a liquid crystal display including an array substrate, wherein the array substrate comprises: an insulating substrate; a first conductive layer on the insulating substrate; a first insulating layer on the first conductive layer; a second conductive layer on the first insulating layer; a second insulating layer on the second conductive layer; a third conductive layer on the second insulating layer; a third insulating layer on the third conductive layer; a fourth conductive layer on the third insulating layer; a plurality of bus lines; a plurality of lead wires; a common electrode provided in the third conductive layer; a common trunk wiring provided outside a display region, crossing the lead wires, and transmitting a common signal; and a connection electrode provided outside the display region and connecting the common electrode with the common trunk wiring, the wiring being provided in the first conductive layer, the plurality of lead wires being provided in the second conductive layer above the common trunk wiring, the connection electrode being provided at least in the fourth conductive layer.