Light-transmitting adhesive film and display device comprising the same
A light-transmissive adhesive film includes an adhesive layer in which an elastic modulus in a second area is higher than that in a first area, and also includes release layers on upper and lower portions of the adhesive layer.
1. A light-transmissive adhesive film comprising:
an adhesive layer in which an elastic modulus in a second area is higher than that in a first area; and
one or more release layers on upper and lower portions of the adhesive layer;
wherein the first area of the adhesive layer has a width more than twice as large as the thickness of the adhesive layer.
2. The light-transmissive adhesive film of claim 1 , wherein the adhesive layer comprises the first and second areas that are alternately located.
3. The light-transmissive adhesive film of claim 1 , wherein the adhesive layer comprises one or more second areas.
4. A light-transmissive adhesive film comprising:
an adhesive layer in which an elastic modulus in a second area is higher than that in a first area; and
one or more release layers on upper and lower portions of the adhesive layer; and
wherein the adhesive layer has an elastic modulus in a range of 0.2 MPa to 0.5 MPa in the first area.
5. The light-transmissive adhesive film of claim 1 , wherein the adhesive layer comprises a polymer that is-photocrosslinkable.
6. The light-transmissive adhesive film of claim 5 , wherein the polymer comprises an organic functional group that undergoes a reaction of [2+2] cycloaddition or photocleavage by ultraviolet light.
7. The light-transmissive adhesive film of claim 1 , wherein the adhesive layer has a thickness in a range of 10 μm to 80 μm.
8. The light-transmissive adhesive film of claim 1 , wherein the first area of the adhesive layer has a linear shape.
9. A display device comprising:
a display panel;
a first adhesive layer on a surface of the display panel; and
a polarizer on the first adhesive layer,
wherein the first adhesive layer has an elastic modulus in a second area, which is higher than that in a first area, and
wherein the first area of the adhesive layer has a width more than twice as large as the thickness of the adhesive layer.
10. The display device of claim 9 , further comprising a second adhesive layer on the polarizer,
wherein the second adhesive layer has an elastic modulus in a second area, which is higher than that in a first area.
11. The display device of claim 10 , further comprising a protective layer on the second adhesive layer.
12. The display device of claim 10 , wherein the first area of the second adhesive layer has a smaller width than that of the first area of the first adhesive layer.
13. The display device of claim 9 , further comprising a third adhesive layer on the other surface of the display panel,
wherein the third adhesive layer has an elastic modulus in a second area, which is higher than that in a first area.
14. The display device of claim 13 , further comprising a support layer on the third adhesive layer.
15. The display device of claim 13 , wherein the first area of the third adhesive layer has a larger width than that of the first area of the second adhesive layer.
16. The display device of claim 9 , wherein the adhesive layer comprises the first and second areas that are alternately located.
17. The display device of claim 9 , wherein the adhesive layer has an elastic modulus in a range of 0.2 MPa to 0.5 MPa in the first area.
18. The display device of claim 9 , wherein the adhesive layer has a thickness in a range of 10 μm to 80 μm.
19. The display device of claim 9 , wherein the display panel is an OLED.
20. The light-transmissive adhesive film of claim 1 , wherein the adhesive comprises shape-memory polymers.