Adhesive tape for encapsulating an organic electronic arrangement

Patent metadata

Field	Value
Publication number	US-9543549-B2
Application number	US-201314411585-A
Country	US
Kind code	B2
Filing date	May 27, 2013
Priority date	Jun 29, 2012
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

The invention relates to a method for protecting an electronic arrangement which is disposed on a substrate and comprises organic constituents, where a cover is applied to the electronic arrangement in such a way that the electronic arrangement is at least partly covered by the cover, the cover being bonded at least over a partial area to the substrate and/or to the electronic arrangement, the adhesive bond being produced by means of at least one layer of an adhesive in an adhesive tape, characterized in that the adhesive comprises a getter material which is capable of at least one permeable substance, the getter material being present in the adhesive in a proportion of not more than 2 wt %, based on the adhesive with the getter material.

First claim

The invention claimed is:

1. A method for protecting an electronic arrangement comprising organic constituents that is arranged on a substrate, said method comprising:
applying a liner to the electronic arrangement in such a way that the electronic arrangement is at least partly covered by the liner, and
bonding the liner at least to a partial area on the substrate and/or on the electronic arrangement, the bond being brought about by means of at least one layer of an adhesive in an adhesive tape,
wherein
the adhesive comprises a getter material capable of sorbing at least one permeable substance, the getter material being present in the adhesive at a fraction of not more than 2 wt %, based on the adhesive with the getter material.

2. The method as claimed in claim 1 , wherein the adhesive tape is a single-layer adhesive tape comprising the layer of adhesive.

3. The method as claimed in claim 1 , wherein
the fraction of the getter material in the adhesive is not more than 1 wt %.

4. The method as claimed in claim 1 , wherein
the fraction of the getter material in the adhesive is at least 0.01 wt %.

5. The method as claimed in claim 1 , wherein
the getter material is in nanoscale form.

6. The method as claimed in claim 1 , wherein
an adhesive is used which when shaped to form a layer having a thickness of 50 μm has a water vapor permeation rate of less than 50 g/m 2 d and/or an oxygen permeation rate of less than 5000 g/m 2 d bar.

7. The method as claimed in claim 1 , wherein
first of all the layer of pressure-sensitive adhesive, optionally as part of a double-sided adhesive tape comprising further layers, and, in a subsequent step, the liner are applied to the substrate and/or the electronic arrangement.

8. The method as claimed in claim 1 , wherein
the layer of pressure-sensitive adhesive and the liner are applied jointly to the substrate and/or the electronic arrangement.

9. The method as claimed in claim 1 , wherein
the liner completely covers the electronic arrangement.

10. The method as claimed in claim 9 , wherein a region of the substrate around the electronic arrangement as well is wholly or partly covered by the liner.

11. The method as claimed in claim 1 , wherein
the layer of adhesive completely covers the electronic arrangement.

12. The method as claimed in claim 11 , wherein a region of the substrate around the electronic arrangement as well is wholly or partly covered by the layer of adhesive.

13. An adhesive tape comprising at least one layer of an adhesive, the pressure-sensitive adhesive comprising a getter material capable of sorbing at least one permeable substance,
wherein the getter material is present in the adhesive at a fraction of not more than 2 wt %, based on the adhesive with the getter material.

Assignees

• Tesa Se

Inventors

• Bai Minyoung
• Ellinger Jan
• Grünauer Judith
• KEITE-TELGENBüSCHER KLAUS
• Petersen Anika

Classifications

• C09J2400/22

  Presence of unspecified polymer · CPC title

• C09J7/35

  Heat-activated · CPC title

• C09J11/04

  inorganic · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• C09J7/38

  Pressure-sensitive adhesives [PSA] · CPC title