Stacked structure for display cover window having improved scratch resistance using difference in elastic modulus and method of manufacturing the same

A method of manufacturing a stacked structure for a display cover window having improved scratch resistance using a difference in elastic modulus, comprising:

• preparing a base member having an elastic modulus of 2.5 GPa to 5.5 GPa and a thickness of 101 μm to 1000 μm and made of poly (methyl methacrylate) (PMMA) materials;
• preparing a hard coating solution by dissolving a solid component containing 3 to 5 parts by weight of hexamethylene diisocyanate trimer (HDI-trimer), 20 to 24 parts by weight of pentaerythritol triacrylate (PETA), 10 to 15 parts by weight of nano-silica, 5 to 8 parts by weight of methyl methacrylate, 10 to 15 parts by weight of a curing agent, 0.1 to 0.5 parts by weight of a leveling agent, and 1 to 2 parts by weight of a photocuring agent in a solvent component containing 8 to 12 parts by weight of methyl cellosolve, 2 to 4 parts by weight of butyl alcohol, and 25 to 27 parts by weight of 1-methoxy-2-propanol;
• forming a hard coating member having an elastic modulus of 0.546 times to 2.4 times the elastic modulus of the base member and having a thickness of 0.001 times to 0.198 times the thickness of the base member by applying the hard coating solution to an upper portion of the base member, heat-drying the hard coating solution to remove the solvent, and photocuring the hard coating solution;
• and forming a damping member having an elastic modulus of 0.0000018 times to 0.02 times the elastic modulus of the base member and a thickness of 0.05 times to 0.36 times the thickness of the base member by applying a silicon-based adhesive layer or an acryl-based adhesive layer toa lower portion of the base member and curing the silicon-based adhesive layer or the acryl-based adhesive layer, wherein the hard coating member has an elastic modulus of 3.0 GPa to 6.0 GPa, and the damping member has an elastic modulus of 0.01 GPa to 0.05 GPa, and wherein the damping member has a thickness of 10 μm to 20 μm.