Polarizing film, method for manufacturing same, polarizing plate, and display device
US11634639B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2019 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Aug 27, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polarizing film including a polarizer that is a cured product of a polymerizable liquid crystal composition is provided. The polymerizable liquid crystal composition contains both a polymerizable liquid crystal compound having at least one polymerizable group and a dichroic coloring matter. The polarizer is laminated on a surface, having a pore size of 0.45 nm to 0.57 nm, of a base material. The pore size is obtained by converting, into a diameter, an average free volume radius calculated by a positron lifetime measurement method in which the positron lifetime is measured by irradiating the surface with positrons with an injection energy of 3 kV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.