Viewing angle control system and image display device
US11789190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2022 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Sep 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133633
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is a viewing angle control polarizing plate that has asymmetric transmission characteristics, does not cause moire even in a case of being used in combination with a high-definition image display device, and is capable of easily following a curved surface and a viewing angle control system with high productivity. The viewing angle control system includes at least a first polarizer and an optically anisotropic layer, in which an absorption axis of the first polarizer forms an angle of 45° or greater with respect to an in-plane direction, and a main axis of a refractive index of the optically anisotropic layer is tilted in the in-plane direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.