Optical film and liquid crystal display
US10551674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2016 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Feb 21, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical film includes a polarizer, a uniaxially elongated film disposed on the polarizer, and a compensation film disposed on one side of the uniaxially elongated film. The polarizer includes a polymer having a glass transition temperature of greater than about 100° C. and including a structural unit derived from styrene or a styrene derivative. The compensation film has a refractive index satisfying Relationship Equations 1 and 2, the uniaxially elongated film has an in-plane retardation satisfying Relationship Equation 3 and a thickness retardation satisfying Relationship Equation 4, and the compensation film has an in-plane retardation satisfying Relationship Equation 5 and a thickness retardation satisfying Relationship Equation 6. A liquid crystal display including the optical film is also disclosed. Relationship Equations 1 to 6 are described in the detailed description.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.