Method of manufacturing organic light emitting display device having polarizable particles in sealant

• US 8,927,327 B2
• Filed: 10/15/2013
• Issued: 01/06/2015
• Est. Priority Date: 12/04/2009
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Display Company Limited (Samsung Group)
• Inventors: Oh, Min-Ho, Cho, Yoon-Hyeong, Lee, Byoung-Duk, Lee, So-Young, Lee, Sun-Young, Lee, Jong-Hyuk
• Primary Examiner(s): Jung, Michael
• Application Number:
  US14/054,441
• Publication Number:
  US 20140154820A1
• Time in Patent Office: 448 Days
• Field of Search: None
• US Class Current: 438/99
• 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

There is provided an organic light emitting display device including a first substrate; an organic light emitting unit formed on the first substrate; a second substrate disposed on the organic light emitting unit; and an adhesive unit for adhering the first substrate and the second substrate to each other, wherein the adhesive unit includes a sealant, and particles that are arranged in the sealant so as to block penetration of external impurities. There is further provided a method of manufacturing the organic light emitting display device.

Claims

1. A method of manufacturing an organic light emitting display device, the method comprising;

forming an organic light emitting unit on a first substrate;

coating an adhesive unit on a second substrate;

adhering, the first substrate and the second substrate to each other so that the adhesive unit surrounds the organic light emitting unit;

applying an electric field or a magnetic field to the adhesive unit; and

hardening the adhesive unit so as to adhere the first substrate and the second substrate to each other, wherein

the adhesive unit comprises a sealant and particles that are dispersed in the sealant.

2. The method of claim 1, wherein the particles are polarizable.

3. The method of claim 2, wherein the applying of the electric field or the magnetic field comprises:

applying the electric field lines or the magnetic field lines in a direction generally perpendicular to the first substrate and the second substrate; and

arranging the particles in the direction of the electric field lines or the magnetic field lines.

4. The method of claim 3, wherein the particles form a plurality of chains that arc each arranged in a direction generally perpendicular to the first substrate and the second substrate.

5. The method of claim 2, wherein the particles are linearly arranged end to end between the first substrate and the second substrate.

6. The method of claim 2, wherein the particles comprise a polarizable organic material.

7. The method of claim 6, wherein the organic Material is one selected from the group consisting of polyaniline, polypyrrole, poly(p-phenylene), poly naphthalene quinine radicals, poly acene quinone radicals, poly phenylenediamine, and polythiophene.

8. The method of claim 2, wherein the particles comprise a polarizable inorganic material.

9. The method of claim 8, wherein the inorganic material is one selected from the group consisting of silica gel, silica, zeolite, and a mesoporous material.

10. The method of claim 1 wherein the sealant comprises an insulating material.

11. The method of claim 10, wherein the, sealant comprises one selected from the group consisting of silicon, epoxy, and acryl.

12. The method of claim 1, wherein the hardening cat the adhesive unit is performed by heating, the adhesive unit.

13. The method of claim 1, wherein the hardening of the adhesive unit is performed by applying ultraviolet rays to the adhesive unit.

14. The method of claim 1, wherein the hardening of the adhesive unit is performed when the electric field or the magnetic field is applied to the adhesive unit.