ORGANIC LIGHT-EMITTING DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME

• US 20110303943A1
• Filed: 05/09/2011
• Published: 12/15/2011
• Est. Priority Date: 06/11/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Mobile Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Jung-Min, Jeon, Jin-Hwan
• Granted Patent: US 8,803,184 B2
• Time in Patent Office: Days
• US Class Current: 257/99
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants

Abstract

An Organic light-emitting display apparatus capable of preventing permeation of external impurities such as oxygen or water vapor and enhancing impact resistance, and a method of manufacturing the organic light-emitting display apparatus. The organic light-emitting display apparatus includes a first substrate; a display unit disposed on the first substrate; a second substrate disposed over the display unit; and a sealing member by which the first substrate is combined with the second substrate. The sealant includes a first sealant which includes a filler and is spaced apart from the first substrate and the second substrate, and a second sealant which contacts the first substrate and the second substrate and covers at least a part of the first sealant.

Claims

1. An organic light-emitting display apparatus comprising:

a first substrate;

a display unit disposed on the first substrate;

a second substrate disposed over the display unit; and

a sealing member by which the first substrate is combined with the second substrate,

wherein the sealing member comprises a first sealant which includes a fillet and is spaced apart from the first substrate and the second substrate, and a second sealant which contacts the first substrate and the second substrate and covers at least a part of the first sealant.

2. The organic light-emitting display apparatus of claim 1, wherein the first sealant is accommodated in the second sealant.

3. The organic light-emitting display apparatus of claim 1, wherein the second sealant does not contain a filler.

4. The organic light-emitting display apparatus of claim 1, wherein the first sealant comprises V—

Te or V—

W glass fit.

5. The organic light-emitting display apparatus of claim 1, wherein the second sealant comprises V—

P—

B—

Zn glass frit.

6. The organic light-emitting display apparatus of claim 1, wherein the first sealant and the second sealant have substantially the same coefficient of thermal expansion (CTE).

7. The organic light-emitting display apparatus of claim 1, wherein the first sealant and the second sealant have a CTE of (30˜

90)*10<sup>−

7</sup>/K.

8. The organic light-emitting display apparatus of claim 1, wherein the transition temperature and melting temperature of the first sealant are lower than the transition temperature and the melting temperature of the second sealant.

9. The organic light-emitting display apparatus of claim 8, wherein the transition temperature and melting temperature of the first sealant are lower than the transition temperature and melting temperature of the second sealant by about 30˜

50°

C.

10. The organic light-emitting display apparatus of claim 1, wherein flowability of the first sealant is poorer than that of the second sealant.

11. The organic light-emitting display apparatus of claim 1, wherein a trench having a predetermined depth is formed in a region of the second substrate contacting the sealing member.

12. The organic light-emitting display apparatus of claim 11, wherein at least a part of the second sealant is accommodated in the trench.

13. An organic light-emitting display apparatus comprising:

a first substrate;

a display unit disposed on the first substrate;

a second substrate disposed over the display unit;

a first portion of a second sealant formed on the first substrate and comprising glass frit,

a first sealant formed on the first portion of the second sealant and comprising glass it and a filler; and

a second portion of the second sealant formed on the first sealant.

14. The organic light-emitting display apparatus of claim 13, wherein the first portion of the second sealant, the first sealant, and the second portion of the second sealant are sequentially formed on one surface of the first substrate on which the display unit is disposed.

15. A method of manufacturing an organic light-emitting display apparatus, the method comprising:

providing a first substrate having a display unit formed thereon;

forming a first portion of a second sealant on one surface of a second substrate;

forming a first sealant including a filler on the first portion of the second sealant;

forming a second portion of the second sealant on the first sealant; and

combining the first substrate with the second substrate such that the first sealant and the first and second portions of the second sealant form a sealing member between the first substrate and the second substrate.

16. The method of claim 15, wherein the second sealant does not contain a filler.

17. The method of claim 15, wherein the forming of the first portion of the second sealant on one surface of the second substrate comprises:

forming a trench in one surface of the second substrate; and

forming the first portion of the second sealant in the trench.

18. The method of claim 17, wherein, in the forming the first portion of the second sealant in the trench, at least a part of the first portion of the second sealant is accommodated in the trench.

19. The method of claim 15, wherein, in the forming of the second portion of the second sealant on the first sealant, the second portion of the second sealant covers at least a part of the first sealant.

20. The method of claim 15, wherein the first sealant is spaced apart from the first substrate and the second substrate.

21. The method of claim 15, wherein the first portion of the second sealant, the first sealant, and the second portion of the second sealant are sequentially formed on the second substrate.

22. The method of claim 15, wherein the sealing member is formed by locally irradiating the first sealant and the first and second portions of the second sealant.

23. The method of claim 22, wherein the second sealant has better flowability than the first sealant such that when the first sealant and the first and second portions of the second sealant are irradiated, the second sealant flows to form a mechanical bond with the first substrate and the second substrate.

24. The method of claim 22, wherein the transition temperature and melting temperature of the first sealant are lower than the transition temperature and melting temperature, of the second sealant such that when the first sealant and the first and second portions of the second sealant are irradiated, the first sealant melts before the second sealant to form pores and some of the second sealant fills the pores of the first sealant.