Optical film with super low retardation and polarizing plate containing the same
US7965441B2 · kind B2 · utility
1Cited by
5References
17Claims
0Family size
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Key dates
| Filing date | May 29, 2007 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Jul 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/254
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
An optical film with super low retardation, including metal oxide nano-particles dispersed in a transparent resin having a three-dimensional crosslinking structure. The optical film has about 0-2 nm in-plane retardation (Ro) and almost zero out-of-plane retardation (Rth). The optical film can replace conventional triacetyl cellulose (TAC) as a polarizer protective film to improve black-white contrast and color shift on liquid crystal displays at wide viewing angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.