Abstract: Embodiments of the present disclosure relate to a display device. The display device includes a glass substrate having a light emitting element layer and a polarization plate positioned on a front face of the glass substrate. The polarization plate includes a first protruded part having a first tip end that coincides with a first edge of the glass substrate and a second protruded part having a second tip end that coincide with a second edge of the glass substrate. During laser trimming, laser beam starts at the first tip end and ends at the second tip ends. Since the first tip end and the second tip end do not overlap, energy directly transferred by the laser beam to areas of the glass substrate that overlap a start point and an end point of the laser trimming is reduced, which in turn reduces micro cracks on the glass substrate.