Phase difference compensation element, liquid crystal display device, and projection image display device
US11550091B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Oct 27, 2020 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Oct 27, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A phase difference compensation element, including: a transparent substrate; a first optical anisotropic layer that includes an inorganic material, and has a C-plate retardance; and a second optical anisotropic layer that includes an inorganic material, and includes an oblique angle vapor deposition film that does not have an O-plate retardance, wherein the phase difference compensation element including the first optical anisotropic layer and the second optical anisotropic layer in combination has a quasi-O-plate retardance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.