Display device and manufacturing method thereof

• US 20040171184A1
• Filed: 03/02/2004
• Published: 09/02/2004
• Est. Priority Date: 04/27/2001
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Takahashi, Masahiro, Maruyama, Junya
• Granted Patent: US 7,067,395 B2
• Time in Patent Office: Days
• US Class Current: 438/33
• 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 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass

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,

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.

7. A display device according to claim 1 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

13. A display device according to claim 1, wherein the light emitting 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.

2. A display device comprising:

a first substrate; and

a second substrate in which at least one 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.

8. A display device according to claim 2 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

14. A display device according to claim 2, wherein the light emitting 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 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.

9. A display device according to claim 3 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

15. A display device according to claim 3, wherein the light emitting 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.

4. A display device comprising:

a first substrate; and

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

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.

10. A display device according to claim 4 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

16. A display device according to claim 4, wherein the light emitting 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.

5. A display device comprising:

a first substrate; and

a second substrate in which a plurality of concave portions are 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 at least one concave portion of the plurality of concave portions.

11. A display device according to claim 5 further comprising a light emitting element in which an anode, an organic layer, and a cathode are laminated on the first substrate.

17. A display device according to claim 5, wherein the light emitting 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 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.

12. A display device according to claim 6 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 6, wherein the light emitting 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 method of manufacturing a display device, comprising:

a first step of forming at least one concave portion in a front surface of a second substrate;

a second step of bonding a first substrate and the second substrate; and

a third step of applying pressure to a rear surface of the second substrate, making cracks develop in the second substrate from the concave portion, and cutting the second substrate.

20. A method of manufacturing a display device according to claim 19 further comprising a step of forming a scribe line in a front surface of the first substrate before the second step,

wherein the second step includes a step of making cracks develop in the first substrate from the scribe line by impacting a cutaway portion of the second substrate with the first substrate, and cutting the first substrate.

21. A method of manufacturing a display device according to claim 19 further comprising a step of forming a scribe line in a rear surface of the first substrate before the second step,

wherein the second step includes a step of making cracks develop in the first substrate from the scribe line by impacting a cutaway portion of the second substrate with the first substrate, and cutting the first substrate.

22. A method of manufacturing a display device according to claim 19, wherein a light emitting element, in which an anode, an organic layer, and a cathode are laminated, is formed on the first substrate

23. A method of manufacturing a display device, comprising a step of bonding a first substrate and a second substrate in which at least one concave portion is formed through a seal pattern,

wherein a step of hardening the seal pattern is performed in a arrangement in which the first substrate is at an upper side and the second substrate is at a lower side.