Flexible window and flexible display
A flexible window and flexible display are disclosed. In one aspect, the flexible window includes a first film having a first Young's modulus, a second film positioned over the first film and having a second Young's modulus that is greater than the first Young's modulus, and a first adhesive layer interposed between the first film and the second film.
1. A flexible display, comprising:
a flexible display unit comprising a bending area and a non-bending area adjacent to the bending area; and
a flexible window formed over the flexible display unit and comprising:
a first film having a first Young's modulus;
a second film positioned over the first film and having a second Young's modulus that is greater than the first Young's modulus;
a third film positioned over the second film and having a third Young's modulus that is greater than the second Young's modulus;
a first adhesive layer interposed between the first film and the second film; and
a second adhesive layer interposed between the second film and the third film,
wherein the first film has a first portion overlapping the bending area, the second film has a third portion overlapping the bending area and a fourth portion overlapping the non-bending area, and the third film has a fifth portion overlapping the bending area and a sixth portion overlapping the non-bending area,
wherein the third portion of the second film has a thickness that is less than that of the first portion of the first film,
wherein the fifth portion of the third film has a thickness that is less than that of the third portion of the second film, and wherein the sixth portion of the third film has a thickness that is greater than that of the fourth portion of the second film.
2. The flexible display of claim 1 , wherein the flexible display is bent at a side of the flexible display unit.
3. The flexible display of claim 1 , wherein the first film comprises a second portion overlapping the non-bending area, and the fourth portion of the second film has a thickness that is greater than that of the second portion of the first film.
4. The flexible display of claim 3 , wherein the third and fourth portions of the second film are integrally formed.
5. The flexible display of claim 3 , wherein the first and second portions of the first film are integrally formed, and wherein the fifth and sixth portions of the third film are integrally formed.
6. A flexible window having a bending area and a non-bending area adjacent to the bending area, comprising:
a first film having a first Young's modulus;
a second film positioned over the first film and having a second Young's modulus that is greater than the first Young's modulus;
a third film positioned over the second film and having a third Young's modulus that is greater than the second Young's modulus;
a first adhesive layer interposed between the first film and the second film; and
a second adhesive layer interposed between the second film and the third film,
wherein the first film has a first portion overlapping the bending area, the second film has a third portion overlapping the bending area and a fourth portion overlapping the non-bending area, and the third film has a fifth portion overlapping the bending area and a sixth portion overlapping the non-bending area,
wherein the third portion of the second film has a thickness that is less than that of the first portion of the first film,
wherein the fifth portion of the third film has a thickness that is less than that of the third portion of the second film, and
wherein the sixth portion of the third film has a thickness that is greater than that of the fourth portion of the second film.
7. The flexible window of claim 6 , wherein the first film further comprises a second portion overlapping the non-bending area, and the fourth portion of the second film has a thickness that is greater than that of the second portion of the first film.
8. The flexible window of claim 7 , wherein the third and fourth portions of the second film are integrally formed.
9. The flexible window of claim 7 , wherein the first and second portions of the first film are integrally formed, and wherein the fifth and sixth portions of the third film are integrally formed.