Composite glass, especially for a vehicle
US-2024391215-A1 · Nov 28, 2024 · US
Barrier film for electronic devices
US2021023817A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021023817-A1 |
| Application number | US-201917040088-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 1, 2019 |
| Priority date | Mar 30, 2018 |
| Publication date | Jan 28, 2021 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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A barrier film for electronic devices exhibiting and maintaining excellent water barrier property. The barrier film for electronic devices features a water permeability (23° C., RH50%) that is set to be not more than 10−4 g/m2/day and a water content that is maintained to be not more than 2000 ppm.
First claim
Opening claim text (preview).
1 . A barrier film for electronic devices characterized by having a water permeability (23° C., RH50%) that is set to be not more than 10 4 g/m 2 /day and a water content that is maintained to be not more than 2000 ppm. 2 . The barrier film for electronic devices according to claim 1 , wherein said water content is maintained to be not more than 100 ppm. 3 . The barrier film for electronic devices according to claim 1 , wherein said barrier film has at least one inorganic barrier layer. 4 . The barrier film for electronic devices according to claim 3 , wherein said barrier film has a plastic substrate layer that lies under said inorganic barrier layer. 5 . The barrier film for electronic devices according to claim 4 , wherein said plastic substrate layer is formed by using a polyester resin, a polyimide resin or a cyclic olefin resin. 6 . The barrier film for electronic devices according to claim 1 , wherein said barrier film is provided with a water-trapping layer. 7 . The barrier film for electronic devices according to claim 6 , wherein said water-trapping layer is a layer that contains an ionic polymer. 8 . The barrier film for electronic devices according to claim 4 , wherein said barrier film includes said plastic substrate layer and said inorganic barrier layer formed on said substrate layer, and a water-trapping layer is formed on said inorganic barrier layer. 9 . The barrier film for electronic devices according to claim 1 , wherein said barrier film is stored being removably held by a desiccant sheet. 10 . The barrier film for electronic devices according to claim 9 , wherein said barrier film is sandwiched by said desiccant sheets. 11 . The barrier film for electronic devices according to claim 9 , wherein said desiccant sheet includes a hygroscopic resin layer in which a desiccant is dispersed and a surface protection resin layer formed on one surface of said hygroscopic resin layer, said surface protection resin layer having a water permeability of not more than 40 g/m 2 ·day at 40° C. and 90% RH, and the other surface of said hygroscopic resin layer being so arranged as to face said barrier film.
Assignees
Inventors
Classifications
comprising getter material or desiccants · CPC title
Forming gas barrier coatings · CPC title
- B32B7/022Primary
Mechanical properties · CPC title
- B32B7/12Primary
using interposed adhesives or interposed materials with bonding properties · CPC title
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title
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Frequently asked questions
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- What does patent US2021023817A1 cover?
- A barrier film for electronic devices exhibiting and maintaining excellent water barrier property. The barrier film for electronic devices features a water permeability (23° C., RH50%) that is set to be not more than 10−4 g/m2/day and a water content that is maintained to be not more than 2000 ppm.
- Who is the assignee on this patent?
- Toyo Seikan Group Holdings Ltd
- What technology area does this patent fall under?
- Primary CPC classification B32B7/022. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jan 28 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).