Flexible display device and producing method of the same

1. A flexible display device comprising:

a hole transport layer, a light emitting layer, an electron transport layer arranged between a first electrode layer and a second electrode layer,

wherein the hole transport layer and the electron transport layer each contain a polyacrylamide including a first part and a second part,

the first part is selected from the group consisting of an α-cyclodextrinyl group, a β-cyclodextrinyl group, and a γ-cyclodextrinyl group, and

the second part is selected from the group consisting of an n-butyl (ester) group, an n-hexyl (ester) group, an n-dodecyl (ester) group, an n-dodecyl (amide) group, an adamantyl group, a cyclohexyl (ester) group and a cyclododecyl (amide) group.

2. The flexible display device according to claim 1 , wherein the hole transport layer and the electron transport layer each contain a polyacrylamide with the host part comprising an α-cyclodextrinyl group, and the guest part being selected from the group consisting of an n-butyl (ester) group, an n-hexyl (ester) group, an n-dodecyl (ester) group, and an n-dodecyl (amide) group.

3. The flexible display device according to claim 1 , wherein the hole transport layer and the electron transport layer each contain a polyacrylamide with the host part comprising a β-cyclodextrinyl group, and the guest part being selected from the group consisting of an adamantyl group, a cyclohexyl (ester) group, and a cyclododecyl (amide) group.

4. The flexible display device according to claim 1 , wherein the hole transport layer and the electron transport layer each contain a polyacrylamide with the host part comprising a γ-cyclodextrinyl group, and the guest part comprising a cyclododecyl (amide) group.

5. The flexible display device according to claim 1 , wherein one of the hole transport layer and the electron transport layer contains a polyacrylamide comprising an α-cyclodextrinyl group as a host part, and the other contains a polyacrylamide comprising a guest part selected from the group consisting of an n-butyl (ester) group, an n-hexyl (ester) group, an n-dodecyl (ester) group, and an n-dodecyl (amide) group.

6. The flexible display device according to claim 1 , wherein one of the hole transport layer and the electron transport layer contains a polyacrylamide comprising a β-cyclodextrinyl group as a host part, and the other contains a polyacrylamide comprising a guest part selected from the group consisting of an adamantyl group, a cyclohexyl (ester) group, and a cyclododecyl (amide) group.

7. The flexible display device according to claim 1 , wherein one of the hole transport layer and the electron transport layer contains a polyacrylamide comprising a γ-cyclodextrinyl group as a host part, and the other contains a polyacrylamide comprising a cyclododecyl (amide) group as a guest part.

8. The flexible display device according to claim 1 , wherein the light emitting layer contains a polyacrylamide including a third part and a fourth part,

the third part is selected from the group consisting of an α-cyclodextrinyl group, a β-cyclodextrinyl group, and a γ-cyclodextrinyl group, and

the fourth part is selected from the group consisting of an n-butyl (ester) group, an n-hexyl (ester) group, an n-dodecyl (ester) group, an n-dodecyl (amide) group, an adamantyl group, a cyclohexyl (ester) group and a cyclododecyl (amide) group.

9. The flexible display device according to claim 1 , further comprising:

a first multilayer portion stacking the hole transport layer, the light emitting layer, and the electron transport layer; and

a second multilayer portion stacking the hole transport layer and the electron transport layer.

10. A producing method of flexible display device comprising:

forming a hole transport layer on a first electrode layer;

forming a light emitting layer on the hole transport layer;

forming an electron transport layer on the light emitting layer; and

forming a second electrode layer on the electron transport layer,

wherein the hole transport layer and the electron transport layer each are formed by using a material containing a polyacrylamide including a first part and a second part,

the first part is selected from the group consisting of an α-cyclodextrinyl group, a β-cyclodextrinyl group, and a γ-cyclodextrinyl group, and

the second part is selected from the group consisting of an n-butyl (ester) group, an n-hexyl (ester) group, an n-dodecyl (ester) group, an n-dodecyl (amide) group, an adamantyl group, a cyclohexyl (ester) group and a cyclododecyl (amide) group.

11. The producing method of flexible display device according to claim 10 , wherein the hole transport layer and the electron transport layer each are formed from a film, the polyacrylamide is dispersed in the film.

12. The producing method of flexible display device according to claim 10 , wherein the hole transport layer and the electron transport layer each are formed from a film, the polyacrylamide is dispersed in a surface of the film at a high concentration.

13. The producing method of flexible display device according to claim 11 , wherein the light emitting layer is formed from a film, the polyacrylamide is dispersed in the film.

14. The producing method of flexible display device according to claim 12 , wherein the light emitting layer is formed from a film, the polyacrylamide is dispersed in a surface of the film at a high concentration.

15. The producing method of flexible display device according to claim 10 , further comprising:

forming a first multilayer portion by stacking the hole transport layer, the light emitting layer, and the electron transport layer; and

forming a second multilayer portion by stacking the hole transport layer and the electron transport layer.

16. The flexible display device according to claim 8 , wherein the first part and the third part are the same, and

the second part and the fourth part are the same.