Optical laminate with adhesive layer and display device

The invention provides an optical laminate (1) with an adhesive layer and a display device, wherein even if a through hole (51) is filled with a filling material, the side surface of the through hole (51) and the filling material can be well adhered. The optical laminate (1) with an adhesive layer has an optical laminate (11) including a polarizing plate having a protective layer on at least one surface of a linear polarizing layer, and an adhesive layer (30) on one surface of the optical laminate (11), and has a through-hole (51) penetrating in the lamination direction. The linear polarization layer has a thickness of 10 [mu] m or less. The maximum height (Sa) of the side surface (51b) of the optical laminate portion among the side surfaces of the through hole (51) is 2.0 [mu] m or less. 本发明提供即使在贯穿孔(51)中填充有填充材料的情况下也能够将贯穿孔(51)的侧面与填充材料良好地密合的带有粘合剂层的光学层叠体(1)及显示装置。带有粘合剂层的光学层叠体(1)具有包含在直线偏振层的至少一面具有保护层的偏振板的光学层叠体(11)、和设于光学层叠体(11)的一面的粘合剂层(30)，并具有沿层叠方向贯穿的贯穿孔(51)。直线偏振层的厚度为10μm以下。贯穿孔(51)的侧面中的光学层叠体部分的侧面(51b)的最大高度(Sa)为2.0μ