Flat panel display including at least one substrate having a groove

• US 7,554,264 B2
• Filed: 04/05/2005
• Issued: 06/30/2009
• Est. Priority Date: 04/07/2004
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Mobile Display Company Limited (Samsung Group)
• Inventors: Park, Jin-Woo, Choi, Dong-Soo, Song, Seung-Yong
• Primary Examiner(s): Patel; Ashok
• Application Number:
  US11/100,137
• Publication Number:
  US 20050264189A1
• Time in Patent Office: 1,547 Days
• Field of Search: None
• US Class Current: 313/506
• 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 50/844 Encapsulations
• CPC Class Codes: H10K 50/846 comprising getter material or desiccants
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/851 Division of substrate

Abstract

A flat panel display and method of fabricating the same are disclosed. The flat panel display includes a first substrate having a pixel region; a light-emitting element located on the pixel region; a second substrate located opposite the first substrate; and a sealant located between the first and second substrates to cover the light-emitting element. At least one of the first and second substrates includes a groove formed around at least a portion of the circumference surrounding the pixel region. When the first and second substrates are pressed together with the sealant between them, the sealant spreads, covering the light-emitting element, and at least partially filling the groove.

Claims

1. A flat panel display comprising:

a first substrate having a pixel region, the pixel region defining a pixel region circumference;

a light-emitting element provided within the pixel region;

a second substrate opposite the first substrate;

a sealant between the first and second substrates and covering the light-emitting element, wherein at least one of the first and second substrates includes a groove corresponding to at least a portion of the pixel region circumference and facing the other of the first and second substrates; and

a moisture-absorbing layer between the sealant and the second substrate, wherein the moisture-absorbing layer comprises an alkaline earth metal oxide.

2. The flat panel display according to claim 1, wherein the groove corresponds to the entire pixel region circumference.

3. The flat panel display according to claim 1, wherein the groove has a depth between about 20 and about 500 μ

m.

4. The flat panel display according to claim 1, wherein the groove has a width between about 0.1 and about 5 mm.

5. The flat panel display according to claim 1, wherein the light-emitting element comprises a first electrode, an emission layer and a second electrode, which are sequentially stacked on the first substrate.

6. The flat panel display according to claim 5, wherein the second electrode is a transparent electrode.

7. The flat panel display according to claim 1, wherein the second substrate is a glass substrate or a plastic substrate.

8. The flat panel display according to claim 1, wherein the sealant is a transparent sealant.

9. The flat panel display according to claim 1, wherein the sealant is a thermosetting curing sealant or a UV light curing sealant.

10. The flat panel display according to claim 1, wherein the alkaline earth metal oxide is calcium oxide or barium oxide.

11. A flat panel display comprising:

a first substrate having a pixel region, the pixel region defining a pixel region circumference;

a light-emitting element provided within the pixel region;

a second substrate opposite the first substrate; and

a sealant between the first and second substrates and covering the light-emitting element, the sealant comprising a moisture-absorbing material, wherein at least one of the first and second substrates includes a groove corresponding to at least a portion of the pixel region circumference and facing the other of the first and second substrates.

12. The flat panel display according to claim 11, wherein the moisture-absorbing material comprises an alkaline earth metal oxide.

13. The flat panel display according to claim 12, wherein the alkaline earth metal oxide is calcium oxide or barium oxide.