Donor substrate for full-color organic electroluminescent display device, method of manufacturing the same, and full-color organic electroluminescent display device using donor substrate
View Patent ↗A donor substrate for a full-color organic electroluminescent display device includes: a base film; a light-to-heat conversion layer formed on the base film; and a transfer layer formed on the light-to-heat conversion layer. The transfer layer is an organic layer including a patterned organic electroluminescent material. Accordingly, it is possible to manufacture a high definition and large-sized organic electroluminescent display device in which misalignment does not occur upon forming an emission layer. The donor substrate and a full-color organic electroluminescent display device including the donor substrate are manufactured by methods according to the present invention.
1. A donor substrate for a full-color organic electroluminescent display device, comprising:
a base film;
a light-to-heat conversion layer formed on the base film; and
a transfer layer which comprises an organic layer including a patterned organic electroluminescent material formed on the light-to-heat conversion layer;
wherein the organic layer including the patterned organic electroluminescent material is transferred onto a pixel region of the organic electroluminescent device after patterning.
2. The donor substrate according to claim 1 , wherein the organic layer is patterned in any one of a stripe shape and a delta shape.
3. The donor substrate according to claim 1 , wherein the organic layer is selected from the group consisting of a hole injecting layer, a hole blocking layer, and an electron injecting layer.
4. The donor substrate according to claim 1 , wherein the organic electroluminescent material is selected from the group consisting of a small molecule electroluminescent material, a polymer electroluminescent material, and a mixture thereof.
5. The donor substrate according to claim 1 , wherein the light-to-heat conversion layer comprises a light absorptive material that absorbs light in at least one of an infrared range and a visible range.
6. A full-color organic electroluminescent display device which includes the donor substrate according to claim 1 .
7. A method of manufacturing a full-color organic electroluminescent display device, comprising:
providing a base film;
forming a light-to-heat conversion layer on the base film;
forming a patterned organic layer, including an organic emission layer, on the light-to-heat conversion layer; and
transferring the patterned organic layer onto a pixel region of the full-color organic electroluminescent display device after patterning.
8. The method according to claim 7 , wherein the step of forming the organic layer comprises using any one of a roll-to-roll method, a sheet-to-sheet method, and a sheet-to-roll method.
9. The method according to claim 7 , wherein the step of patterning the organic layer comprises patterning in any one of a stripe shape and a delta shape.
10. The method according to claim 7 , wherein the organic layer is selected from the group consisting of a hole injecting layer, a hole transporting layer, a hole blocking layer, an electron transporting layer, and an electron injecting layer.
11. The method according to claim 7 , wherein the organic layer comprises an organic electroluminescent material which is selected from the group consisting of a small molecule electroluminescent material, a polymer electroluminescent material, and a mixture thereof.
12. A donor substrate for a full-color organic electroluminescent display device manufactured by the method according to claim 7 .
13. A full-color organic electroluminescent device which includes a donor substrate manufactured by the method according to claim 7 .
14. The method according to claim 7 , wherein the step of forming the patterned organic layer comprises using one of an inkjet method, a printing method, a lithography method, and an ablation method.
15. The method according to claim 7 , wherein the step of transferring the patterned organic layer onto the pixel region of the full-color organic electroluminescent device comprises using a laser induced thermal imaging process.
16. A method of manufacturing a full-color organic electroluminescent display device, comprising:
providing a base film;
forming a light-to-heat conversion layer on the base film;
forming a patterned organic layer, including an organic emission layer, on the light-to-heat conversion layer; and
transferring the patterned organic layer onto a pixel region of the full-color organic electroluminescent display device after patterning;
wherein the organic layer is selected from the group consisting of a hole injecting layer, a hole blocking layer, and an electron injecting layer.
17. The method according to claim 16 , wherein the step of forming the organic layer comprises using any one of a roll-to-roll method, a sheet-to-sheet method, a roll-to-sheet method, and a sheet-to-roll method.
18. The method according to claim 16 , wherein the step of patterning the organic layer comprises patterning in any one of a stripe shape and a delta shape.
19. The method according to claim 16 , wherein the organic layer comprises an organic electroluminescent material which is selected from the group consisting of a small molecule electroluminescent material, a polymer electroluminescent material, and a mixture thereof.
20. A full-color organic electroluminescent display device manufactured by the method according to claim 16 .
21. The method according to claim 16 , wherein the step of forming the patterned organic layer comprises using one of an inkjet method, a printing method, a lithography method, and an ablation method.
22. The method according to claim 16 , wherein the step of transferring the patterned organic layer onto the pixel region of the full-color organic electroluminescent device comprises using a laser induced thermal imaging process.
23. A method of manufacturing a full-color organic electroluminescent display device, comprising:
providing a base film;
forming a light-to-heat conversion layer on the base film;
forming a patterned organic layer, including an organic emission layer, on the light-to-heat conversion layer;
transferring the patterned organic layer onto a pixel region of the full-color organic electroluminescent display device after patterning so as to form a transfer layer; and
performing an anti-reflection coating process on the transfer layer to prevent properties of the transfer layer from being degraded due to reflection.
24. A method of manufacturing a full-color organic electroluminescent display device, comprising:
providing a base film;
forming a light-to-heat conversion layer on the base film;
forming a patterned organic layer, including an organic emission layer, on the light-to-heat conversion layer;
transferring the patterned organic layer onto a pixel region of the full-color organic electroluminescent display device after patterning so as to form a transfer layer; and
forming a gas generating layer between the light-to-heat conversion layer and the transfer layer to enhance sensitivity of a donor substrate of the full-color organic electro luminescent display device.