Image display device
US-10067387-B2 · Sep 4, 2018 · US
Optical film, polarization plate, transparent conductive film, surface protection film, and liquid crystal display apparatus having negative birefringence
US10317598B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10317598-B2 |
| Application number | US-201514979553-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 28, 2015 |
| Priority date | Jun 26, 2013 |
| Publication date | Jun 11, 2019 |
| Grant date | Jun 11, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
An optical film in which heat resistance or moisture resistance is excellent, and visibility is able to be sufficiently ensured. In the optical film used in a display apparatus including a polarizer, Re is 1,000 nm to 30,000 nm, and Rth is −30,000 nm to −1,000 nm. Further, a polarization plate including the optical film, a transparent conductive film including the optical film, a surface protection film including the optical film including the optical film, and a liquid crystal display apparatus including the optical film.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical film used in a display apparatus including a polarizer, wherein Re is greater than 3,000 nm to 30,000 nm, and Rth is −30,000 nm to −1,000 nm, and Re is retardation in an in-plane direction and Rth is retardation in a thickness direction. 2. The optical film according to claim 1 , wherein a thickness of the optical film is 10 μm to 500 μm. 3. The optical film according to claim 1 , wherein an equilibrium moisture content of the optical film at 25° C. and relative humidity of 60% is less than or equal to 0.1 wt %. 4. The optical film according to claim 1 , wherein a distortion temperature under load of the optical film is higher than or equal to 105° C. 5. The optical film according to claim 1 , wherein the optical film is a polystyrene-based film. 6. The optical film according to claim 5 , wherein the polystyrene-based film contains crystalline polystyrene. 7. The optical film according to claim 5 , wherein the polystyrene-based film has a syndiotactic structure. 8. A polarization plate, comprising: the optical film according to claim 1 ; and a polarizer. 9. A transparent conductive film, comprising: the optical film according to claim 1 ; and a conductive layer. 10. A surface protection film using the optical film according to claim 1 . 11. A liquid crystal display apparatus using the optical film according to claim 1 . 12. The optical film according to claim 1 , wherein the Re is 4,200 nm to 30,000 nm.
Assignees
Inventors
Classifications
- G02B5/3083Primary
Birefringent or phase retarding elements (G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001) · CPC title
in the form of a thin sheet or foil, e.g. Polaroid · CPC title
comprising electrically conductive elements, e.g. wire grids, conductive particles · CPC title
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- What does patent US10317598B2 cover?
- An optical film in which heat resistance or moisture resistance is excellent, and visibility is able to be sufficiently ensured. In the optical film used in a display apparatus including a polarizer, Re is 1,000 nm to 30,000 nm, and Rth is −30,000 nm to −1,000 nm. Further, a polarization plate including the optical film, a transparent conductive film including the optical film, a surface protec…
- Who is the assignee on this patent?
- Fujifilm Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B5/3083. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 11 2019 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).