Display device and manufacturing method thereof

• US 6,855,961 B2
• Filed: 04/24/2002
• Issued: 02/15/2005
• Est. Priority Date: 04/27/2001
• Status: Expired due to Term

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Takahashi, Masahiro, Maruyama, Junya
• Primary Examiner(s): Cuneo, Kamand
• Assistant Examiner(s): Geyer, Scott B.
• Application Number:
  US10/131,435
• Publication Number:
  US 20020187575A1
• Time in Patent Office: 1,028 Days
• Field of Search: 257/79, 257/80, 257/81, 257/82, 257/98, 257/99, 257/100, 438/455, 438/456, 438/457, 438/458, 438/26, 438/27, 438/33, 438/116, 438/118, 345/33, 345/39, 345/40
• US Class Current: 257/99
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/846 comprising getter material or desiccants
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/173 comprising banks or shadow masks
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/874 including getter material or desiccant
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/40 Thermal treatment, e.g. annealing in the presence of a solvent vapour

Abstract

A technique for obtaining light emitting devices manufactured with high yield is provided. The width of a seal pattern (605b) can be kept thin by manufacturing a light emitting device using a second substrate (600a) which has a concave portion (607a) and a concave portion (608a). It therefore becomes possible to make the light emitting device have a narrow frame. In addition, the light emitting device with the narrow frame can be realized by a manufacturing method thereof in which a portion of the second substrate from the concave portion to an edge surface is cut.

Claims

1. A display device comprising:

a first substrate;

a second substrate in which at least one concave portion is formed; and

a light emitting element in which an anode, an organic layer, and a cathode are laminated over the first substrate,

wherein the second substrate and the first substrate are bonded through a sealing material, and

wherein the sealing material fills the concave portion of the second substrate.

2. A display device according to claim 1, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

3. A display device according to claim 1, the light emitting element comprising:

an anode over the first substrate, an organic layer over the anode, and a cathode over the organic layer.

4. A display device comprising:

a first substrate; and

a second substrate in which at least one concave portion is formed, and

a light emitting element in which an anode, an organic layer, and a cathode are laminated over the first substrate,

wherein the second substrate and the first substrate are bonded through a seal pattern, and

wherein a portion of the seal pattern is formed in a portion of the concave portion.

5. A display device according to claim 4, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

6. A display device according to claim 4, the light emitting element comprising:

an anode over the first substrate, an organic layer over the anode, and a cathode over the organic layer.

7. A display device comprising:

a first substrate in which a portion of a scribe line is formed; and

a second substrate in which a concave portion is formed,

wherein the second substrate and the first substrate are bonded through a seal pattern, and

wherein a portion of the seal pattern is formed in a portion of the concave portion, and

wherein the scribe line overlaps with the concave portion.

8. A display device according to claim 7 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

9. A display device according to claim 7, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

10. A display device comprising:

a first substrate; and

a second substrate in which a plurality of concave portions are formed, and

a light emitting element in which an anode, an organic layer, and a cathode are laminated over the first substrate,

wherein the second substrate and the first substrate are bonded through a sealing material, and

wherein the sealing material fills at least one concave portion of the plurality of concave portions.

11. A display device according to claim 10, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

12. A display device according to claim 10, light emitting element comprising:

an anode over the first substrate, an organic layer over the anode, and a cathode over the organic layer.

13. A display device comprising:

a first substrate; and

a second substrate in which a plurality of concave portions are formed, and

a light emitting element in which an anode, an organic layer, and a cathode are laminated over the first substrate,

wherein the second substrate and the first substrate are bonded through a seal pattern, and

wherein a portion of the seal pattern is formed in at least one concave portion of the plurality of concave portions.

14. A display device according to claim 13, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

15. A display device according to claim 13, the light emitting element comprising:

an anode over the first substrate, an organic layer over the anode, and a cathode over the organic layer.

16. A display device comprising:

a first substrate in which a portion of a scribe line is formed; and

a second substrate in which a plurality of concave portions are formed,

wherein the second substrate and the first substrate are bonded through the seal pattern, and

wherein a portion of the sealing pattern is formed in at least one concave portion of the plurality of concave portions and

wherein the scribe line overlaps with the concave portion.

17. A display device according to claim 16 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

18. A display device according to claim 16, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

19. A display device comprising:

a first substrate;

a second substrate in which at least one concave portion is formed; and

a thin film transistor over the first substrate,

wherein the second substrate and the first substrate are bonded through a sealing material, and

wherein the sealing material fills the concave portion of the second substrate.

20. A display device according to claim 19 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

21. A display device according to claim 19, wherein the display device is one of the a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

22. A display device comprising:

a first substrate;

a second substrate in which at least one concave portion is formed; and

a thin film transistor over the first substrate,

wherein the second substrate and the first substrate are bonded through a sealing material,

wherein the sealing material fills the concave portion of the second substrate, and

wherein an inert gas fills a region surrounded by the sealing material.

23. A display device according to claim 22 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

24. A display device according to claim 22, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.

25. A display device comprising:

a first substrate;

a second substrate in which at least one concave portion is formed; and

a thin film transistor over the first substrate,

wherein the second substrate and the first substrate are bonded through a sealing material,

wherein the sealing material fills the concave portion of the second substrate, and

wherein a resin fills a region surrounded by the sealing material.

26. A display device according to claim 25 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

27. A display device according to claim 25, wherein the display device is one of the group consisting of a personal computer, a video camera, a portable information terminal, a digital camera, a DVD player, an onboard reverse direction confirmation monitor for a vehicle, a TV telephone, a head-mounted display, a car navigation system, a car audio system, and an electronic amusement device.