US Patent 10396313 Display device and method of manufacturing the same

A manufacturing method of a display device includes: forming pixels on a mother substrate including a display area and a non-display area; attaching a polarization film stretched in a first direction and a second direction opposite to the first direction on the mother substrate having the pixels thereon; and cutting at least a portion of the polarization film along a third direction, wherein the third direction forms an acute angle with the first direction toward an outside of the polarization film.