Moisture barrier laminate
US-2021122147-A1 · Apr 29, 2021 · US
Barrier film for electronic devices
US11479018B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11479018-B2 |
| Application number | US-201917040088-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 1, 2019 |
| Priority date | Mar 30, 2018 |
| Publication date | Oct 25, 2022 |
| Grant date | Oct 25, 2022 |
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- Title
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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).
The invention claimed is: 1. An assembly of a barrier film and a desiccant sheet for electronic devices, the barrier film being 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, wherein said barrier film has at least one inorganic barrier layer, said barrier film, further, having a plastic substrate layer of a polyester resin, a polyimide resin or a cyclic olefin resin under said inorganic barrier, and said barrier film being, further, provided with a water-trapping layer that contains an ionic polymer on said inorganic barrier layer. 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 assembly according to claim 1 , wherein said barrier film is stored being removably held by a desiccant sheet. 4. The assembly according to claim 3 , wherein said barrier film is sandwiched by two of said desiccant sheets. 5. The assembly according to claim 3 , 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
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Classifications
of synthetic resin · CPC title
comprising polyethers · CPC title
Touch screens · CPC title
Dimensional properties · CPC title
comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title
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- What does patent US11479018B2 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 C08J7/0423. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 25 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).