Light absorption anisotropic layer, laminate, optical film, image display device, and backlight module
US11768324B2 · kind B2 · utility
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28Claims
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Key dates
| Filing date | Jun 23, 2022 |
| Grant date | Sep 26, 2023 |
| Priority date | — |
| Expiry date | Jun 23, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133615
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a light absorption anisotropic layer including a dichroic substance, in which a transmittance as viewed from a front direction is high and a transmittance as viewed from an oblique direction can be lowered, a laminate, an optical film, an image display device, and a backlight module. The light absorption anisotropic layer includes a liquid crystalline compound and at least one dichroic substance, in which the dichroic substance is aligned perpendicular to the film surface, and an alignment degree of the light absorption anisotropic layer at a wavelength of 550 nm is 0.95 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.