Organic light emitting display device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-9450207-B2
Application number	US-201615088649-A
Country	US
Kind code	B2
Filing date	Apr 1, 2016
Priority date	Jun 28, 2013
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

Disclosed is an organic light emitting display device in which water is prevented from externally permeating thereinto. The organic light emitting display device comprises a first substrate on which an organic light emitting diode and a driving device designed to drive the organic light emitting diode are formed; a second substrate facing the first substrate; a viscosity layer interposed between the first substrate and the second substrate to cover entire areas of the first substrate and the second substrate, the viscosity layer including a filler capable of water absorption; and a first adhesion layer arranged to adhere the viscosity layer to the first substrate, wherein the viscosity layer is a material including a cross-linkage functional group and having a viscosity characteristic at room temperature.

First claim

What is claimed is:

1. A method for manufacturing an organic light emitting display device, the method comprising:
forming an organic light emitting diode and a driving device to drive the organic light emitting diode on a first substrate;
forming a passivation layer on the organic light emitting diode;
adhering a lower surface of a viscosity layer, which includes a filler capable of water absorption and has a viscosity characteristic at room temperature with a cross-linkage functional group, to an upper surface of a first adhesion layer;
adhering an upper surface of the viscosity layer to a lower surface of a second adhesion layer;
adhering an upper surface of the second adhesion layer to a lower surface of a second substrate facing the first substrate; and
bonding the first substrate and the second substrate to each other by adhering a lower surface of the first adhesion layer to an upper surface of the passivation.

2. The method of claim 1 , wherein the viscosity layer is a material having a storage elastic modulus of 0.001 MPa to 100 MPa in the range of 20° C. to 120° C.

3. The method of claim 1 , wherein the viscosity layer is a material having a glass transition temperature Tg of −70° C. to 10° C.

4. The method of claim 1 , wherein the viscosity layer is a polyolefin based material, Polyimide (PI), Polyamide (PA), Polyvinyl Chloride (PVC), or acrylic polymer material.

5. The method of claim 1 , wherein the filler is a water reactive absorbent made of a single or two or more mixtures of a metal powder, a metal oxide, metallic salt material, or Phosphorus Pentoxide (P2O5).

6. The method of claim 1 , wherein the filler is a physical absorbent made of silica, zeolite, titania, zirconia, or montmorillonite.

7. The method of claim 1 , wherein a content of the filler in the viscosity layer is 10% to 100% by weight.

8. The method of claim 1 , wherein a thickness rate of the first adhesion layer and the viscosity layer is 0.1 to 1.5.

9. The method of claim 1 , wherein the first adhesion layer as a thickness of 2 μm to 20 μm, and the viscosity layer has a thickness of 5 μm to 100 μm.

10. The method of claim 1 , wherein the second substrate is formed of a metal material including Mg.

11. A method for manufacturing an organic light emitting display device, the method comprising:
forming an organic light emitting diode and a driving device to drive the organic light emitting diode on a first substrate;
adhering a lower surface of a viscosity layer, which includes a filler capable of water absorption and has a viscosity characteristic at room temperature with a cross-linkage functional group, to an upper surface of a first adhesion layer;
adhering an upper surface of the viscosity layer to a lower surface of a second adhesion layer;
adhering an upper surface of the second adhesion layer to a lower surface of a second substrate facing the first substrate; and
bonding the first substrate and the second substrate to each other by adhering a lower surface of the first adhesion layer to the organic light emitting diode.

12. The method of claim 11 , wherein the viscosity layer is a material having a storage elastic modulus of 0.001 MPa to 100 MPa in the range of 20° C. to 120° C.

13. The method of claim 11 , wherein the viscosity layer is a material having a glass transition temperature Tg of −70° C. to 10° C.

14. The method of claim 11 , wherein the viscosity layer is a polyolefin based material, Polyimide (PI), Polyamide (PA), Polyvinyl Chloride (PVC), or acrylic polymer material.

15. The method of claim 11 , wherein the filler is a water reactive absorbent made of a single or two or more mixtures of a metal powder, a metal oxide, metallic salt material, or Phosphorus Pentoxide (P 2 O 5 ).

16. The method of claim 11 , wherein the filler is a physical absorbent made of silica, zeolite, titania, zirconia, or montmorillonite.

17. The method of claim 11 , wherein a content of the filler in the viscosity layer is 10% to 100% by weight.

18. The method of claim 11 , wherein a thickness rate of the first adhesion layer and the viscosity layer is 0.1 to 1.5.

19. The method of claim 11 , wherein the first adhesion layer as a thickness of 2 μm to 20 μm, and the viscosity layer has a thickness of 5 μm to 100 μm.

20. The method of claim 11 , wherein the second substrate is formed of a metal material including Mg.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Sun Hee
• Kim Myung Seop

Classifications

• H10K59/874

  including getter material or desiccant · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K50/846

  comprising getter material or desiccants · CPC title

• H10K59/871 Primary

  Self-supporting sealing arrangements · CPC title