Patent ID: 7244476

Claim:
A display device comprising: a display element; an optical film provided on a viewer's side of the display element; and an adhesive film having a transparent support, and a first adhesive layer of a first type formed on a respective one of two opposing surfaces of the transparent support and a second adhesive layer of a second, different type formed on the other of the two opposing surfaces, wherein the optical film is bonded to the first adhesive layer and the display element is bonded to the second adhesive layer, wherein the first adhesive layer is made of a material of which the cured state changes by an application of external energy, wherein the first adhesive layer has a gel fraction of 50 wt % or more, wherein the transparent support has a roughness Rt satisfying Rt<2 μm when the roughness Rt is defined as the distance between the highest crest and the deepest trough within a range of a length evaluated, and wherein the surface of the display element bonded to the second adhesive layer includes a region having a roughness Rt1 satisfying Rt1>2 μm when the roughness Rt1 is defined as the distance between the highest crest and the deepest trough within a range of a length evaluated.