Laminate
US11487055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2020 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Jan 14, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/8792
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An object of the present invention is to provide a laminate in which the coloring of reflected light is reduced. The laminate includes an optical film having a light absorption anisotropic film formed using a composition including a dichroic substance and having a transmittance of more than 50%, a λ/4 plate, and a metal electrode in this order, in which in a case where a degree (%) of polarization at a wavelength of λ of the optical film is defined as P(λ) and a reflectance (%) at the wavelength of λ of the metal electrode is defined as R(λ), a ratio of a minimum value of R/P to a maximum value of R/P at wavelengths of 450 nm, 550 nm, and 650 nm is more than 85%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.