Display device and optically clear adhesive

A display device, comprising:

• a flexible display panel comprising at least one plane area and at least one foldable area;
• wherein the flexible display panel has two opposite sides;
• and
• an optical clear adhesive disposed on at least one of the two opposite sides of the flexible display panel, wherein:
• the optical clear adhesive comprises:
• a substrate layer, a first adhesive material structure and a second adhesive material structure respectively disposed on two opposite sides of the substrate layer;
• wherein all the substrate layer, the first adhesive material structure and the second adhesive material structure are transparent materials;
• a deformation recovery rate of the substrate layer is greater than that of each of the first adhesive material structure and the second adhesive material structure;
• and
• in the optical clear adhesive, the deformation recovery rate of the second adhesive material structure is greater than that of the first adhesive material structure, the second adhesive material structure is closer to an inner folding side of the foldable area of a display panel, and the first adhesive material structure is closer to an outer folding side of the foldable area of the display panel;
• wherein
• the first adhesive material structure comprises at least two adhesive material layers, wherein the at least two adhesive material layers are in direct contact;
• in the first adhesive material structure, the closer the adhesive material layer is to the substrate layer, the greater a storage modulus of the adhesive material layer is;
• and/or
• the second adhesive material structure comprises at least two adhesive material layers, wherein the at least two adhesive material layers are in direct contact and in the second adhesive material structure, the closer the adhesive material layer is to the substrate layer, the greater a storage modulus of the adhesive material layer is.