Organic light-emitting display and method of making the same

• US 20070170423A1
• Filed: 09/29/2006
• Published: 07/26/2007
• Est. Priority Date: 01/24/2006
• Status: Abandoned Application

• Current Assignee: Samsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Ung, Park, Jin, Lee, Jong, Lim, Dae, Choi, Dong, Lee, Jae
• Application Number:
  US11/540,021
• Publication Number:
  US 20070170423A1
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: C03C 17/40 all coatings being metal coatings
• CPC Class Codes: C03C 2217/252 Al
• CPC Class Codes: C03C 2217/253 Cu
• CPC Class Codes: C03C 2218/34 Masking
• CPC Class Codes: C03C 27/06 Joining glass to glass by processes other than fusing fusing C03B23/20; units for use as elements for closing wall or like openings and comprising two or more parallel glass panes in spaced relationship, the panes being permanently secured together E06B3/66
• CPC Class Codes: C03C 8/24 Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/421 using coherent electromagnetic radiation, e.g. laser annealing

Abstract

Disclosed is an organic light-emitting display device in which a substrate and an encapsulation substrate are completely sealed using a frit; and the preparing method of the same. The organic light-emitting display device of the present invention includes a first substrate comprising a pixel region including an organic light-emitting diode and a non-pixel region formed in an outside of the pixel region; a second substrate coalesced onto at least a pixel region of the first substrate; a frit provided between the non-pixel region of the first substrate and the second substrate to attach the substrate and the encapsulation substrate to each other; and a supplement material composed of resin formed in at least one region of each outer surface of the first substrate, the second substrate and the frit.

Claims

1. An organic light-emitting display device, comprising

a front substrate comprising a front surface, an interior surface and side surfaces, wherein the front substrate is of a single layer or comprises a plurality of layers;

a back substrate comprising a back surface, an interior surface and side surfaces, the front substrate being placed over the back substrate, wherein the back substrate is of a single layer or comprises a plurality of layers;

an array of display pixels interposed between the front and back surfaces;

a frit seal formed between the interior surfaces of the front and back substrates while surrounding the array, wherein the frit seal, the front substrate and the back substrate in combination define an enclosed space in which the array is located, the frit seal comprising an outer surface facing away from the enclosed space;

a resin layer formed on at least part of the back surface of the and on at least part of the side surfaces of the back substrate, the resin layer extending so as to contact the outer surface of the frit seal.

2. The device of claim 1, wherein the resin layer further extends to at least part of the side surfaces of the front substrate.

3. The device of claim 1, wherein the resin layer comprises a portion interposed between the front and back substrates.

4. The device of claim 3, wherein the portion contacts the interior surfaces of the front and back substrates.

5. The device of claim 1, wherein the resin layer covers the substantially entire area of the back surface.

6. The. device of claim 1, wherein the resin layer covers the substantially entire area of the side surfaces of the back substrate.

7. The device of claim 1, wherein the resin layer covers the substantially entire area of the outer surface of the frit seal.

8. The device of claim 1, wherein the front substrate comprises a substantially transparent portion configured to pass visible light from the array, and wherein the resin layer further extends to the front surface while not covering the substantially transparent portion.

9. The device of claim 1, wherein the resin layer comprises one or more materials selected from the group consisting of epoxy, acrylate and urethaneacrylate resins.

10. The device of claim 1, wherein the back substrate further comprises a non-overlapping portion over which the front substrate does not extend, and wherein at least part of the non-overlapping portion of the back substrate is substantially free of the resin layer.

11. The device of claim 10, wherein the device further comprises an array driving circuit formed over the non-overlapping portion of the back substrate, and wherein the resin layer does not extend to the array driving circuit.

12. The device of claim 1, wherein the frit seal comprises one or more materials selected from the group consisting of magnesium oxide (MgO), calcium oxide (CaO), barium oxide (BaO), lithium oxide (Li₂O), sodium oxide (Na₂O), potassium oxide (K₂O), boron oxide (B₂O₃), vanadium oxide (V₂O₅), zinc oxide (ZnO), tellurium oxide (TeO₂), aluminum oxide (Al₂O₃), silicon dioxide (SiO₂), lead oxide (PbO), tin oxide (SnO), phosphorous oxide (P₂O₅), ruthenium oxide (Ru₂O), rubidium oxide (Rb₂O), rhodium oxide (Rh₂O), ferrite oxide (Fe₂O₃), copper oxide (CuO), titanium oxide (TiO₂), tungsten oxide (WO₃), bismuth oxide (Bi₂O₃), antimony oxide (Sb₂O₃), lead-borate glass, tin-phosphate glass, vanadate glass, and borosilicate.

13. A method of making an organic light-emitting display device, the method comprising:

providing a device comprising

a first substrate comprising a first exterior surface, a first interior surface and first side surfaces,

a second substrate comprising a second exterior surface, a second interior surface and second side surfaces, the second substrate being placed over the first substrate,

an array of display pixels interposed between the first and second substrates, and

a frit seal formed between the first and second interior surfaces while surrounding the array, wherein the frit seal, the first substrate and the second substrate in combination define an enclosed space in which the array is located, the frit seal comprising an outer surface facing away from the enclosed space;

immersing the device into a resin solution;

removing the device from the resin solution, wherein the resin solution is coated on surfaces of the device after removing;

curing the resin solution coated on the device so as to form a resin layer on surfaces of the device.

14. The method of claim 13, wherein the device further comprises an extension extending from the fist substrate.

15. The method of claim 14, wherein when immersing, the device is substantially entirely immersed except the extension.

16. The method of claim 14, wherein the extension comprises a rod.

17. The method of claim 14, wherein the extension comprises a non-overlapping portion of the first substrate, over which the second substrate does not extend.

18. The method of claim 17, wherein when immersing, at least part of the non-over lapping portion is not immersed while the remainder of the device is substantially entirely immersed.

19. The method of claim 13, wherein the resin solution has a viscosity between about 100 and about 4,000 cp.

20. The method of claim 13, wherein the device further comprises a removable film over at least part of the second exterior surface, and wherein the resin solution is coated on the removable film after immersing and removing.

21. The method of claim 20, further comprising, after curing, removing the removable film and part of the resin layer formed on the removable film so as to expose at least part of the second exterior surface.