ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE

• US 20190312233A1
• Filed: 06/24/2019
• Published: 10/10/2019
• Est. Priority Date: 10/30/2015
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: KIM, Jintae, KIM, Sookang, JO, Soyoung, KOO, Wonhoe, JANG, Jihyang, LIM, Hyunsoo, CHOI, Mingeun
• Granted Patent: US 11,069,879 B2
• Time in Patent Office: Days
• CPC Class Codes: H10K 50/813 characterised by their shape
• CPC Class Codes: H10K 50/822 characterised by their shape
• CPC Class Codes: H10K 50/854 comprising scattering means
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 50/858 comprising refractive means, e.g. lenses
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks

Abstract

Disclosed is an organic light emitting diode display device. The disclosed organic light emitting diode display device includes an overcoat layer disposed on a substrate that is divided into an emissive area and a non-emissive area, and has multiple micro lenses in the emissive area and at least one depression in the non-emissive area. The organic light emitting diode display device further includes: a first electrode disposed on the overcoat layer, wherein the first electrode is disposed in the entire emissive area and in a part of the non-emissive area; a bank pattern disposed in the non-emissive area so as to be superposed on the depression; an organic light emitting layer disposed on the substrate; and a second electrode disposed on the organic light emitting layer. Accordingly, the organic light emitting diode display device may prevent light leakage.

Claims

1-13. -13. (canceled)

14. An organic light emitting diode display device comprising:

a substrate having a plurality of emissive areas and a non-emissive area that surrounds the plurality of emissive areas;

an overcoat layer disposed on the substrate and having a plurality of micro lenses in each emissive area and at least one depression in the non-emissive area, the plurality of micro lenses comprising a concave portion;

a first electrode disposed on the overcoat layer in the plurality of emissive areas;

an organic light emitting layer disposed on the first electrode, the overcoat layer, and the at least one depression; and

a second electrode disposed on the organic light emitting layer.

15. The organic light emitting diode display device of claim 14, wherein a height of the at least one depression is the same as a vertical length of the overcoat layer in the non-emissive area.

16. The organic light emitting diode display device of claim 14, wherein the second electrode comprises at least one concave portion and at least one convex portion in the non-emissive area.

17. The organic light emitting diode display device of claim 16, wherein the at least one concave portion of the second electrode is provided in the non-emissive area corresponding to the at least one depression of the overcoat layer.

18. The organic light emitting diode display device of claim 14, wherein the at least one depression is provided in the non-emissive area corresponding to at least one side of at least one of the plurality of emissive areas.

19. The organic light emitting diode display device of claim 14, wherein a first depression provided in an area corresponding to one side of at least one of the plurality of emissive areas has a different size from that of a second depression provided in an area corresponding to one side of each of the remaining plurality of emissive areas.

20. The organic light emitting diode display device of claim 14, wherein the second electrode is a reflective electrode.

21. The organic light emitting diode display device of claim 14, wherein the at least one depression has a different shape from a shape of the concave portion.

22. The organic light emitting diode display device of claim 14, wherein the at least one depression surrounds the emissive area in a plan view.

23. The organic light emitting diode display device of claim 14, wherein the overcoat layer has inclined surfaces in the at least one depression, and

wherein the organic light emitting layer and the second electrode have inclined surfaces corresponding to the inclined surfaces of the overcoat layer in the at least one depression.

24. The organic light emitting diode display device of claim 14, further comprising a bank pattern disposed between the organic light emitting layer and the overcoat layer in the non-emissive area.

25. The organic light emitting diode display device of claim 24, wherein the bank pattern is formed of an opaque organic material.

26. The organic light emitting diode display device of claim 24, wherein the organic light emitting layer and the second electrode are disposed on side surfaces of the overcoat layer that are exposed by the bank patterns in the areas corresponding to the at least one depression of the overcoat layer.

27. The organic light emitting diode display device of claim 141, further comprising a color filter disposed between the overcoat layer and the substrate,

wherein the organic light emitting layer is in contact with one side of the color filter in the at least one depression.

28. An organic light emitting diode display device comprising:

a substrate divided into an emissive area and a non-emissive area;

an overcoat layer disposed on the substrate and having a plurality of micro lenses in the emissive area and at least one depression in the non-emissive area, the plurality of micro lenses comprising a concave portion;

a first electrode disposed on the overcoat layer in the emissive area;

an organic light emitting layer disposed on the first electrode, the overcoat layer, and the at least one depression; and

a second electrode disposed on the organic light emitting layer,

wherein the at least one depression has a different shape from a shape of the concave portion, and

wherein the at least one depression is covered by the organic light emitting layer.

29. The organic light emitting diode display device of claim 28, further comprising a thin film transistor disposed in the non-emissive area and covered by the overcoat layer,

wherein the first electrode disposed is connected to the thin film transistor through a contact hole formed in the overcoat layer, and

wherein the at least one depression has a different shape from a shape of the concave portion and the contact hole.

30. The organic light emitting diode display device of claim 28, wherein the second electrode comprises at least one concave portion and at least one convex portion in the non-emissive area, and

wherein the at least one concave portion of the second electrode is provided in an area that corresponds to the at least one depression of the overcoat layer.

31. The organic light emitting diode display device of claim 28, wherein the at least one depression is provided in the non-emissive area corresponding to at least one side of the emissive area.

32. The organic light emitting diode display device of claim 28, wherein a first depression provided in an area corresponding to one side of at least one of the plurality of emissive areas has a different size from that of a second depression provided in an area corresponding to one side of each of the remaining plurality of emissive areas.

33. The organic light emitting diode display device of claim 28, wherein the second electrode is a reflective electrode.

34. The organic light emitting diode display device of claim 28, wherein the at least one depression surrounds the emissive area in a plan view.