Light emitting device, method of preparing the same and device for fabricating the same

• US 8,629,439 B2
• Filed: 06/28/2006
• Issued: 01/14/2014
• Est. Priority Date: 01/24/2002
• Status: Expired due to Fees

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Hiroki, Masaaki, Murakami, Masakazu, Kuwabara, Hideaki
• Primary Examiner(s): Clark, S. V.
• Assistant Examiner(s): Miyoshi, Jesse Y
• Application Number:
  US11/476,508
• Publication Number:
  US 20060243989A1
• Time in Patent Office: 2,757 Days
• Field of Search: 257/57, 257/59, 257/72, 257/83, 257/257, 257/290, 257/351, 257/368
• US Class Current: 257/59
• CPC Class Codes: H10K 50/824 combined with auxiliary electrodes
• CPC Class Codes: H10K 50/828 Transparent cathodes, e.g. comprising thin metal layers
• 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 59/00 Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]

Abstract

A light emitting device having a high definition, a high aperture ratio and a high reliability is provided. The present invention realizes a high definition and a high aperture ratio for a flat panel display of full colors using luminescent colors of red, green and blue without being dependent upon the film formation method and deposition precision of an organic compound layer by forming the laminated sections 21, 22 by means of intentionally and partially overlapping different organic compound layers of adjacent light emitting elements. Moreover, the protective film 32a containing hydrogen is formed and the drawback in the organic compound layer is terminated with hydrogen, thereby realizing the enhancement of the brightness and the reliability.

Claims

1. A light emitting device comprising:

a substrate;

a pixel portion including a light emitting element on the substrate;

a drive circuit portion on the substrate;

a first terminal portion for pasting a first FPC on the substrate;

a second terminal portion for pasting a second FPC on the substrate; and

a sealing substrate over the pixel portion, the drive circuit portion, a part of the first terminal portion and a part of the second terminal portion,

wherein the sealing substrate is pasted with a sealing member, and

wherein the sealing member overlaps with the first terminal portion, the second terminal portion and the drive circuit portion.

2. The light emitting device according to claim 1,

wherein the first terminal portion and the second terminal portion are on the same side of the substrate.

3. The light emitting device according to claim 1,

wherein the first terminal portion includes a first electrode for pasting the first FPC and the second terminal portion includes a second electrode for pasting the second FPC.

4. The light emitting device according to claim 3,

wherein the first electrode and the second electrode are formed with the same material with that of a cathode of the light emitting element.

5. A light emitting device comprising:

a substrate;

a pixel portion including a light emitting element on the substrate;

a drive circuit portion on the substrate;

a first terminal portion for pasting a first FPC on the substrate;

a second terminal portion for pasting a second FPC on the substrate; and

a sealing substrate over the pixel portion, the drive circuit portion, a part of the first terminal portion and a part of the second terminal portion,

wherein the sealing substrate is pasted with a sealing member,

wherein the sealing member overlaps with the first terminal portion and the second terminal portion,

wherein a convex portion is formed on a region of the sealing substrate, and

wherein the sealing member is between the substrate and the region where the convex portion is formed.

6. The light emitting device according to claim 5,

wherein the first terminal portion and the second terminal portion are on the same side of the substrate.

7. The light emitting device according to claim 5,

wherein the first terminal portion includes a first electrode for pasting the first FPC and the second terminal portion includes a second electrode for pasting the second FPC.

8. The light emitting device according to claim 7,

wherein the first electrode and the second electrode are formed with the same material with that of a cathode of the light emitting element.

9. The light emitting device according to claim 5,

wherein the convex portion is formed with the same material with that of a color filter in the pixel portion.

10. A light emitting device comprising:

a substrate;

a pixel portion including a light emitting element on the substrate;

a drive circuit portion on the substrate;

a first terminal portion for pasting a first FPC on the substrate;

a second terminal portion for pasting a second FPC on the substrate;

an interlayer insulating film over the substrate; and

a sealing substrate over the pixel portion, the drive circuit portion, a part of the first terminal portion and a part of the second terminal portion,

wherein the interlayer insulating film has a concave portion in each of the first terminal portion and the second terminal portion,

wherein an inorganic insulating film is formed over the interlayer insulating film and in the concave portion, and

wherein a sealing member is between the sealing substrate and the inorganic insulating film and a part of the sealing member is in the concave portion.

11. The light emitting device according to claim 10,

wherein the first terminal portion and the second terminal portion are on the same side of the substrate.

12. The light emitting device according to claim 10,

wherein the first terminal portion includes a first electrode for pasting the first FPC and the second terminal portion includes a second electrode for pasting the second FPC.

13. The light emitting device according to claim 12,

wherein the first electrode and the second electrode are formed with the same material with that of a cathode of the light emitting element.

14. The light emitting device according to claim 10,

wherein the interlayer insulating film includes an organic material.

15. A light emitting device comprising:

a substrate;

a pixel portion including a light emitting element on the substrate;

a drive circuit portion on the substrate;

a first terminal portion for pasting a first FPC on the substrate;

a second terminal portion for pasting a second FPC on the substrate;

an interlayer insulating film over the substrate; and

a sealing substrate over the pixel portion, the drive circuit portion, a part of the first terminal portion and a part of the second terminal portion,

wherein the interlayer insulating film has a concave portion in each of the first terminal portion and the second terminal portion,

wherein an inorganic insulating film is formed over the interlayer insulating film and in the concave portion,

wherein a convex portion is formed on a region of the sealing substrate, and

wherein a sealing member is between the region where the convex portion is formed and the inorganic insulating film and a part of the sealing member is in the concave portion.

16. The light emitting device according to claim 15,

wherein the first terminal portion and the second terminal portion are on the same side of the substrate.

17. The light emitting device according to claim 15,

wherein the first terminal portion includes a first electrode for pasting the first FPC and the second terminal portion includes a second electrode for pasting the second FPC.

18. The light emitting device according to claim 17,

wherein the first electrode and the second electrode are formed with the same material with that of a cathode of the light emitting element.

19. The light emitting device according to claim 15,

wherein the convex portion is formed with the same material with that of a color filter in the pixel portion.

20. The light emitting device according to claim 15,

wherein the interlayer insulating film includes an organic material.