Organic light-emitting device having low temperature viscosity transition (LVT) inorganic material

• US 9,343,703 B2
• Filed: 07/25/2014
• Issued: 05/17/2016
• Est. Priority Date: 03/05/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Park, Jin-Woo
• Primary Examiner(s): Tran, Long K
• Assistant Examiner(s): Tran, Dzung
• Application Number:
  US14/341,663
• Publication Number:
  US 20140332785A1
• Time in Patent Office: 662 Days
• Field of Search: 257/40, 257/E51.018, 257/59, 257/88, 257/98, 257/99, 257/79, 257/E33.026, 313/504, 438/26
• US Class Current: 1/1
• CPC Class Codes: C03C 17/42 at least one coating of an organic material and at least one non-metal coating
• CPC Class Codes: C03C 2218/34 Masking
• CPC Class Codes: C03C 27/10 with the aid of adhesive specially adapted for that purpose
• CPC Class Codes: H01L 27/15 including semiconductor components having potential barriers, specially adapted for light emission
• CPC Class Codes: H01L 29/06 characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
• CPC Class Codes: H01L 29/08 with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 77/10 Substrates, e.g. flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 428/31678 Of metal

Abstract

A method of preparing an organic light-emitting device having excellent sealing characteristics against external environment and flexibility.

Claims

1. A substrate comprising:

a second substrate;

at least one inorganic layer on one surface of the second substrate and comprising a low temperature viscosity transition (LVT) inorganic material comprising a tin oxide; and

at least one organic layer between the at least one inorganic layer and the second substrate,

wherein the at least one organic layer contacts the second substrate, and

wherein the substrate is configured to transit the at least one inorganic layer onto an organic layer coating an organic emission unit on a first substrate to produce an organic light-emitting device.

2. The substrate of claim 1, wherein the at least one organic layer comprises a heat-resistant organic material.

3. The substrate of claim 1, wherein the viscosity transition temperature of the LVT inorganic material is a minimum temperature capable of providing fluidity to the LVT inorganic material.

4. The substrate of claim 1, wherein the LVT inorganic material further comprises at least one selected from the group consisting of a phosphorus oxide, a boron phosphate, a tin fluoride, a niobium oxide, and a tungsten oxide.

5. The substrate of claim 1, wherein the LVT inorganic material comprises SnO;

SnO and P₂O₅;

SnO and BPO₄;

SnO, SnF₂, and P₂O₅;

SnO, SnF₂, P₂O₅, and NbO;

or SnO, SnF₂, P₂O₅, and WO₃.

6. The substrate of claim 1, wherein the second substrate comprises glass, plastic, or metal.

7. An organic light-emitting device comprising:

a first substrate;

an organic emission unit on one surface of the first substrate;

an inorganic layer comprising a low temperature viscosity transition (LVT) inorganic material comprising a tin oxide, the inorganic layer covering the organic emission unit and contacting the first substrate;

a first organic layer between the inorganic layer and the organic emission unit; and

a second substrate on and attached to the inorganic layer and facing the first substrate.

8. The organic light-emitting device of claim 7, wherein the inorganic layer is transited onto the organic emission unit to cover the organic emission unit.

9. The organic light-emitting device of claim 7, wherein the inorganic layer is transited to the first organic layer to cover the first organic layer.

10. The organic light-emitting device of claim 7, further comprising a second organic layer between the second substrate and the inorganic layer.

11. The organic light-emitting device of claim 7, further comprising an adhesive between the first substrate and the second substrate and disposed outside of the organic emission unit.

12. The organic light-emitting device of claim 7, wherein the viscosity transition temperature of the LVT inorganic material is a minimum temperature capable of providing fluidity to the LVT inorganic material.

13. The organic light-emitting device of claim 7, wherein the LVT inorganic material further comprises at least one selected from the group consisting of a phosphorus oxide, a boron phosphate, a tin fluoride, a niobium oxide, and a tungsten oxide.

14. The organic light-emitting device of claim 7, wherein the LVT inorganic material comprises SnO;

SnO and P₂O₅;

SnO and BPO₄;

SnO, SnF₂, and P₂O₅;

SnO, SnF₂, P₂O₅, and NbO;

or SnO, SnF₂, P₂O₅, and WO₃.

15. The organic light-emitting device of claim 7, wherein the second substrate comprises glass, plastic, or metal.