Encapsulation film

Patent metadata

Field	Value
Publication number	US-9806293-B2
Application number	US-201414244693-A
Country	US
Kind code	B2
Filing date	Apr 3, 2014
Priority date	Jan 6, 2012
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The present application relates to an encapsulating film, an electronic device and a method of manufacturing the same. In the present application, an encapsulating film having excellent moisture blocking property, handleability, workability and durability and a structure including a diode encapsulated with the encapsulating film may be provided.

First claim

The invention claimed is:

1. An encapsulating film for an organic electronic device, comprising:
a first layer including a resin component wherein the resin component is a material selected from the group consisting of a styrene-based resin, a polyolefin-based resin, a thermoplastic elastomer, a polyoxyalkylene-based resin, a polyester-based resin, a polyvinyl chloride-based resin, a polycarbonate-based resin, a polyphenylenesulfide-based resin, a mixture of hydrocarbons, a polyamide-based resin, an acrylate-based resin, a silicon-based resin, a fluorine-based resin and a mixture thereof, and a moisture scavenger of 30 parts by weight to 250 parts by weight with respect to 100 parts by weight of the resin component, and having a tensile modulus of 0.001 to 100 MPa measured at 25° C. after being cured; and
a second layer including a curable resin composition and a moisture scavenger at 0 parts by weight or more and less than 5 parts by weight with respect to 100 parts by weight of a solid content of the second layer,
wherein the encapsulating film is arranged such that when placed on the organic electronic diode the second layer is in physical contact with the organic electronic diode, and the first layer is not in physical contact with the organic electronic diode,
wherein the tensile modulus of the first layer measured at 25° C. after being cured is lower than the tensile modulus of the second layer measured at 25° C. after being cured, and
wherein the first layer is a pressure-sensitive adhesive layer or an adhesive layer.

2. The film of claim 1 , wherein the second layer is disposed on one or both surfaces of the first layer.

3. The film of claim 1 , wherein the second layer is solid or semi-solid at room temperature.

4. The film of claim 3 , wherein the second layer is in a non-cured state.

5. The film of claim 1 , wherein the second layer comprises the curable resin composition in a film type.

6. An electronic device comprising:
an upper substrate;
a bottom substrate; and
an encapsulating layer including the film of claim 1 encapsulating a diode between the upper and bottom substrates.

7. The electronic device of claim 6 , wherein the diode is formed on a surface of the bottom substrate facing the upper substrate, and the second layer of the film is in contact with the bottom substrate.

8. A method of manufacturing an electronic device, comprising: laminating the film of claim 1 on a substrate on which a diode is formed such that the second layer of the film is in contact with the diode.

9. The film of claim 1 , wherein the moisture scavenger is a metal oxide, a sulfate or inorganic metal oxide.

10. The film of claim 1 , wherein the moisture scavenger is magnesium oxide, calcium oxide, strontium oxide, barium oxide, aluminum oxide, magnesium sulfoxide, sodium sulfoxide, nickel sulfoxide, or aluminum oxide octylate.

11. The film of claim 1 , wherein the first and second layers are in direct mutual contact.

Assignees

• Lg Chemical Ltd

Inventors

• Yoo Hyun Jee
• Cho Yoon Gyung
• Chang Suk Ky
• Shim Jung Sup
• Lee Seung Min

Classifications

• H10W74/47

  comprising organic materials, e.g. plastics or resins · CPC title

• H10W74/01

  Manufacture or treatment · CPC title

• C09J2301/41

  additives as essential feature of the carrier layer · CPC title

• C09J2301/408

  additives as essential feature of the adhesive layer · CPC title

• C09J2301/312

  parameters being the characterizing feature · CPC title