Cover window for display device and display device including the same

A bendable display device comprising:

• a bendable display panel;
• and
• a bendable cover window on the display panel, the cover window comprising:
• a first film;
• a second film on the first film;
• and
• a first adhesive layer between the first film and the second film;
• a coating layer on the cover window;
• a second adhesive layer between the display panel and the cover window;
• and
• an optical layer on the display panel,
• wherein the cover window has a thickness in a range of 1 μm to 500 μm,
• wherein the optical layer contacts the second adhesive layer,
• wherein the first adhesive layer has a lap shear modulus in a range of 20 kPa to 50 kPa,
• wherein the first adhesive layer has a modulus of elasticity that gradually varies along a thickness direction thereof,
• wherein the first adhesive layer includes a first sub-layer, a second sub-layer, a third sub-layer, a fourth sub-layer, and a fifth sub-layer, and
• wherein the modulus of elasticity of the first adhesive layer decreases, increases, or increases and then decreases from the first sub-layer to the fifth sub-layer.