Semitransparent diffusion-polarization laminate and usage therefor
US-2015362728-A1 · Dec 17, 2015 · US
Iodine-based polarizer, polarizing plate, optical film, and image display device
US10025014B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10025014-B2 |
| Application number | US-201214366869-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 16, 2012 |
| Priority date | Jan 5, 2012 |
| Publication date | Jul 17, 2018 |
| Grant date | Jul 17, 2018 |
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Abstract
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An iodine-based polarizer includes a polyvinyl alcohol-based film; and iodine adsorbed and oriented in the polyvinyl alcohol-based film, the iodine-based polarizer having be undergone a treatment with a treatment bath containing at least one reducing agent, the iodine-based polarizer containing an oxidized form of the reducing agent, wherein the total content of the reducing agent and the oxidized form is from 0.06×10−6 mol/g to 1.6×10−6 mol/g. The iodine-based polarizer has a sufficiently high level of transmittance, degree of polarization, and other optical properties and can suppress light leakage in short-wavelength.
First claim
Opening claim text (preview).
The invention claimed is: 1. An iodine-based polarizer, comprising: a polyvinyl alcohol-based film; and iodine adsorbed and oriented in the polyvinyl alcohol-based film, the iodine-based polarizer having be undergone a treatment with a treatment bath containing at least one reducing agent, the iodine-based polarizer containing an oxidized form of the reducing agent, wherein the total content of the reducing agent and the oxidized form is from 0.06×10 −6 mol/g to 1.6×10 −6 mol/g. 2. The iodine-based polarizer according to claim 1 , wherein the reducing agent comprises at least one of ascorbic acid, erythorbic acid, thiosulfuric acid, sulfurous acid, and salts thereof. 3. A polarizing plate, comprising: the iodine-based polarizer according to claim 1 ; and a transparent protective film provided on at least one side of the iodine-based polarizer. 4. An optical film, comprising the iodine-based polarizer according to claim 1 . 5. An image display device, comprising the iodine-based polarizer according to claim 1 . 6. An optical film, comprising the polarizing plate according to claim 3 . 7. An image display device, comprising the polarizing plate according to claim 3 . 8. An image display device, comprising the optical film according to claim 4 .
Assignees
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Classifications
in the form of a thin sheet or foil, e.g. Polaroid · CPC title
- G02B5/305Primary
including organic materials, e.g. polymeric layers · CPC title
made of polarising materials · CPC title
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- What does patent US10025014B2 cover?
- An iodine-based polarizer includes a polyvinyl alcohol-based film; and iodine adsorbed and oriented in the polyvinyl alcohol-based film, the iodine-based polarizer having be undergone a treatment with a treatment bath containing at least one reducing agent, the iodine-based polarizer containing an oxidized form of the reducing agent, wherein the total content of the reducing agent and the oxidi…
- Who is the assignee on this patent?
- Nitto Denko Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B5/305. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 17 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).