A display device is disclosed, which includes: a first substrate; a common electrode disposed on the first substrate; a metal line electrically connecting to the common electrode and extending along a first direction, wherein the metal line comprises a first region, and the first region at least partially overlaps the common electrode; and a light shielding region, wherein a part of the light shielding region extends along the first direction and at least covers the metal line, wherein the first region has a first maximum width along a second direction vertical to the first direction, the metal line has a metal edge closest to a shielding edge of the light shielding region, the shielding edge extends along the first direction, and along the second direction, a minimum distance between the shielding edge and the metal edge is between 0 μm and the first maximum width.