Light emitting device, electronic equipment, and organic polarizing film

• US 20060055847A1
• Filed: 08/15/2005
• Published: 03/16/2006
• Est. Priority Date: 10/01/2001
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Takayama, Toru, Yamazaki, Shunepi
• Granted Patent: US 7,800,099 B2
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: H01L 27/1214 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
• CPC Class Codes: H01L 27/1266 the substrate on which the devices are formed not being the final device substrate, e.g. using a temporary substrate
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays

Abstract

A light emitting device capable of reducing degradation caused by dispersion of impurities such as moisture, oxygen, an alkaline metal, and an alkaline earth metal is provided. Specifically, a flexible light emitting device with an OLED formed on a plastic substrate is provided. In a light emitting device using a substrate, a circular polarizing plate has a single layer or two or more layers of barrier films formed of a compound or compounds selected from AlN_XO_Y, Al_XN_Y, and Al₂O₃, which is (are) capable of preventing oxygen and moisture from seeping into an organic light emitting layer of an OLED as well as preventing an alkaline metal, an alkaline earth metal, and other impurities from penetrating an active layer of a TFT.

Claims

1. (canceled)

2. An electronic apparatus comprising:

a first adhesive layer over a substrate;

a thin film transistor over the adhesive layer;

a first electrode over the thin film transistor;

a layer containing an organic compound over the first electrode;

a second electrode over the layer containing an organic compound;

an insulating film over the second electrode;

a second adhesive layer over the insulating film; and

a supporting body over the second adhesive layer.

8. An electronic apparatus according to claim 2, wherein the substrate is a plastic film substrate comprising a material selected from the group consisting of polyethylene terephthalate (PET), polyether sulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, polyether ether ketone (PEEK), polysulfone (PSF), polyether imide (PEI), polyarylate (PAR) and polybutylene terephthalate (PBT).

14. An electronic apparatus according to claim 2, wherein the electronic apparatus is one selected from the group consisting of a video camera, a digital camera, a goggle-type display, a car navigation system, a personal computer, and a portable information terminal.

20. An electronic apparatus according to claim 2, wherein the supporting body comprises a circular polarizing plate having at least a layer comprising AlN_XO_Y.

26. An electronic apparatus according to claim 20, wherein the total thickness of the layer comprising AlN_XO_Y is 50 to 500 nm.

32. An electronic apparatus according to claim 20, wherein the layer comprising AlN_XO_Y contains 2.5 to 47.5 atm % of nitrogen.

38. An electronic apparatus according to claim 2, wherein the layer containing an organic compound generates luminescence by applying an electric field.

3. An electronic apparatus comprising:

a first insulating film over a substrate;

a first adhesive layer over the first insulating film;

a thin film transistor over the adhesive layer;

a first electrode over the thin film transistor;

a layer containing an organic compound over the first electrode;

a second electrode over the layer containing an organic compound;

an insulating film over the second electrode;

a second adhesive layer over the insulating film; and

a supporting body over the second adhesive layer.

9. An electronic apparatus according to claim 3, wherein the substrate is a plastic film substrate comprising a material selected from the group consisting of polyethylene terephthalate (PET), polyether sulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, polyether ether ketone (PEEK), polysulfone (PSF), polyether imide (PEI), polyarylate (PAR) and polybutylene terephthalate (PBT).

15. An electronic apparatus according to claim 3, wherein the electronic apparatus is one selected from the group consisting of a video camera, a digital camera, a goggle-type display, a car navigation system, a personal computer, and a portable information terminal.

21. An electronic apparatus according to claim 3, wherein the supporting body comprises a circular polarizing plate having at least a layer comprising AlN_XO_Y.

27. An electronic apparatus according to claim 21, wherein the total thickness of the layer comprising AlN_XO_Y is 50 to 500 nm.

33. An electronic apparatus according to claim 21, wherein the layer comprising AlN_XO_Y contains 2.5 to 47.5 atm % of nitrogen.

39. An electronic apparatus according to claim 3, wherein the layer containing an organic compound generates luminescence by applying an electric field.

4. An electronic apparatus comprising:

a thin film transistor over a substrate;

a first insulating film over the thin film transistor;

a first electrode over the first insulating film and connected to the thin film transistor through a hole formed in the first insulating film;

a layer containing an organic compound over the first electrode;

a second electrode over the layer containing an organic compound;

a second insulating film comprising AlN_XO_Y over the second electrode; and

a supporting body over the second insulating film.

10. An electronic apparatus according to claim 4, wherein the substrate is a plastic film substrate comprising a material selected from the group consisting of polyethylene terephthalate (PET), polyether sulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, polyether ether ketone (PEEK), polysulfone (PSF), polyether imide (PEI), polyarylate (PAR) and polybutylene terephthalate (PBT).

16. An electronic apparatus according to claim 4, wherein the electronic apparatus is one selected from the group consisting of a video camera, a digital camera, a goggle-type display, a car navigation system, a personal computer, and a portable information terminal.

22. An electronic apparatus according to claim 4, wherein the supporting body comprises a circular polarizing plate having at least a layer comprising AlN_XO_Y.

28. An electronic apparatus according to claim 22, wherein the total thickness of the layer comprising AlN_XO_Y is 50 to 500 nm.

34. An electronic apparatus according to claim 22, wherein the layer comprising AlN_XO_Y contains 2.5 to 47.5 atm % of nitrogen.

40. An electronic apparatus according to claim 4, wherein the layer containing an organic compound generates luminescence by applying an electric field.

5. An electronic apparatus comprising:

at least one first insulating film comprising AlN_XO_Y over a substrate;

a thin film transistor over the substrate;

a second insulating film over the thin film transistor;

a first electrode over the second insulating film and connected to the thin film transistor through a hole formed in the second insulating film;

a layer containing an organic compound over the first electrode;

a second electrode over the layer containing an organic compound;

a third insulating film comprising AlN_XO_Y over the second electrode; and

a supporting body over the third insulating film.

11. An electronic apparatus according to claim 5, wherein the substrate is a plastic film substrate comprising a material selected from the group consisting of polyethylene terephthalate (PET), polyether sulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, polyether ether ketone (PEEK), polysulfone (PSF), polyether imide (PEI), polyarylate (PAR) and polybutylene terephthalate (PBT).

17. An electronic apparatus according to claim 5, wherein the electronic apparatus is one selected from the group consisting of a video camera, a digital camera, a goggle-type display, a car navigation system, a personal computer, and a portable information terminal.

23. An electronic apparatus according to claim 5, wherein the supporting body comprises a circular polarizing plate having at least a layer comprising AlN_XO_Y.

29. An electronic apparatus according to claim 23, wherein the total thickness of the layer comprising AlN_XO_Y is 50 to 500 nm.

35. An electronic apparatus according to claim 23, wherein the layer comprising AlN_XO_Y contains 2.5 to 47.5 atm % of nitrogen.

41. An electronic apparatus according to claim 5, wherein the layer containing an organic compound generates luminescence by applying an electric field.

6. An electronic apparatus comprising:

a thin film transistor over a substrate;

a first insulating film over the thin film transistor;

a first electrode over the first insulating film and connected to the thin film transistor through a hole formed in the first insulating film;

a layer containing an organic compound over the first electrode;

a second electrode over the layer containing an organic compound;

a second insulating film comprising AlN_XO_Y over the second electrode;

a supporting body over the second insulating film; and

an air gap provided between the second insulating film and the supporting body.

12. An electronic apparatus according to claim 6, wherein the substrate is a plastic film substrate comprising a material selected from the group consisting of polyethylene terephthalate (PET), polyether sulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, polyether ether ketone (PEEK), polysulfone (PSF), polyether imide (PEI), polyarylate (PAR) and polybutylene terephthalate (PBT).

18. An electronic apparatus according to claim 6, wherein the electronic apparatus is one selected from the group consisting of a video camera, a digital camera, a goggle-type display, a car navigation system, a personal computer, and a portable information terminal.

24. An electronic apparatus according to claim 6, wherein the supporting body comprises a circular polarizing plate having at least a layer comprising AlN_XO_Y.

30. An electronic apparatus according to claim 24, wherein the total thickness of the layer comprising AlN_XO_Y is 50 to 500 nm.

36. An electronic apparatus according to claim 24, wherein the layer comprising AlN_XO_Y contains 2.5 to 47.5 atm % of nitrogen.

42. An electronic apparatus according to claim 6, wherein the layer containing an organic compound generates luminescence by applying an electric field.

7. An electronic apparatus comprising:

at least one first insulating film comprising AlN_XO_Y over a substrate;

a thin film transistor over the substrate;

a second insulating film over the thin film transistor;

a first electrode over the second insulating film and connected to the thin film transistor through a hole formed in the second insulating film;

a layer containing an organic compound over the first electrode;

a second electrode over the layer containing an organic compound;

a third insulating film comprising AlN_XO_Y over the second electrode;

a supporting body over the second insulating film; and

an air gap provided between the second insulating film and the supporting body.

13. An electronic apparatus according to claim 7, wherein the substrate is a plastic film substrate comprising a material selected from the group consisting of polyethylene terephthalate (PET), polyether sulfone (PES), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, polyether ether ketone (PEEK), polysulfone (PSF), polyether imide (PEI), polyarylate (PAR) and polybutylene terephthalate (PBT).

19. An electronic apparatus according to claim 7, wherein the electronic apparatus is one selected from the group consisting of a video camera, a digital camera, a goggle-type display, a car navigation system, a personal computer, and a portable information terminal.

25. An electronic apparatus according to claim 7, wherein the supporting body comprises a circular polarizing plate having at least a layer comprising AlN_XO_Y.

31. An electronic apparatus according to claim 25, wherein the total thickness of the layer comprising AlN_XO_Y is 50 to 500 nm.

37. An electronic apparatus according to claim 25, wherein the layer comprising AlN_XO_Y contains 2.5 to 47.5 atm % of nitrogen.

43. An electronic apparatus according to claim 7, wherein the layer containing an organic compound generates luminescence by applying an electric field.