Multilayer optical adhesives and methods of making same
US-2016016338-A1 · Jan 21, 2016 · US
Protective display film
US9780318B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9780318-B2 |
| Application number | US-201514969002-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 15, 2015 |
| Priority date | Dec 15, 2015 |
| Publication date | Oct 3, 2017 |
| Grant date | Oct 3, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A display film includes a transparent polymeric substrate layer and a transparent aliphatic cross-linked polyurethane layer disposed on the transparent polymeric substrate layer. The transparent aliphatic cross-linked polyurethane layer has a glass transition temperature in a range from 11 to 27 degrees Celsius and a Tan Delta peak value in a range from 0.5 to 2.5. The display film has a haze value of 1% or less.
First claim
Opening claim text (preview).
What is claimed is: 1. A film comprising: a display film comprising: a transparent polymeric substrate layer; and a transparent aliphatic cross-linked polyurethane layer disposed on the transparent polymeric substrate layer, the transparent aliphatic cross-linked polyurethane layer having a glass transition temperature in a range from 11 to 27 degrees Celsius, a Tan Delta peak value in a range from 0.5 to 2.5, a cross-link density in a range from 0.34 to 0.65 mol/kg, and a NCO/OH ratio in a range from 0.8 to 1; the display film having a haze value of 1% or less; and first and second removable liners separated by the display film. 2. The film according to claim 1 , wherein the transparent aliphatic cross-linked polyurethane layer has a Tan Delta peak value in a range from 1 to 2. 3. The film according to claim 1 , wherein the display film has a thickness of less than 500 micrometers and the transparent aliphatic cross-linked polyurethane layer has a thickness greater than 100 micrometers. 4. The film according to claim 1 , wherein the transparent aliphatic cross-linked polyurethane layer has a glass transition temperature in a range from 17 to 22 degrees Celsius and a Tan Delta peak value in a range from 1.4 to 1.8. 5. The film according to claim 1 , wherein the display film has a haze of 0.5% or less. 6. The film according to claim 1 , wherein the display film has a visible light transmission of 85% or greater. 7. The film according to claim 1 , further comprising an optical adhesive layer disposed between the transparent polymeric substrate layer and the first removable liner and the second removable liner is disposed on the transparent aliphatic cross-linked polyurethane layer. 8. A film comprising: a display film comprising: a transparent polymeric substrate layer; and a transparent aliphatic cross-linked polyurethane layer disposed on the transparent polymeric substrate layer, the transparent aliphatic cross-linked polyurethane layer having a glass transition temperature in a range from 11 to 27 degrees Celsius, a Tan Delta peak value in a range from 0.5 to 2.5, a cross-link density in a range from 0.34 to 0.65 mol/kg, and a NCO/OH ratio in a range from 0.8 to 1; the display film is intact after at least 100,000 bending cycles about a 3 mm radius; and first and second removable liners separated by the display film. 9. The film according to claim 8 , wherein the transparent aliphatic cross-linked polyurethane layer has a Tan Delta peak value in a range from 1 to 2 and the display film maintains a haze value of 1% or less after at least 100,000 bending cycles about a 3 mm radius. 10. The film according to claim 8 , wherein the display film has a thickness of less than 500 micrometers and the transparent aliphatic cross-linked polyurethane layer has a thickness greater than 100 micrometers. 11. The film according to claim 8 , wherein the transparent aliphatic cross-linked polyurethane layer has a glass transition temperature in a range from 17 to 22 degrees Celsius and a Tan Delta peak value in a range from 1.4 to 1.8. 12. The film according to claim 8 , wherein the display film has a haze of 0.5% or less. 13. The display film according to claim 8 , wherein the display film has a visible light transmission of 85% or greater.
Assignees
Inventors
Classifications
- H01L51/0097Primary
Electricity · mapped topic
Displays, e.g. liquid crystal displays, plasma displays · CPC title
Electricity · mapped topic
Transparent · CPC title
comprising polyurethanes · CPC title
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Frequently asked questions
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- What does patent US9780318B2 cover?
- A display film includes a transparent polymeric substrate layer and a transparent aliphatic cross-linked polyurethane layer disposed on the transparent polymeric substrate layer. The transparent aliphatic cross-linked polyurethane layer has a glass transition temperature in a range from 11 to 27 degrees Celsius and a Tan Delta peak value in a range from 0.5 to 2.5. The display film has a haze v…
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- What technology area does this patent fall under?
- Primary CPC classification H01L51/0097. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 03 2017 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).