Positive dielectric anisotropic liquid crystal composition and liquid crystal display device
US11466214B2 · kind B2 · utility
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Key dates
| Filing date | Apr 29, 2019 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/3408
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A positive dielectric anisotropic liquid crystal composition includes one or more compounds of formula I and one or more compounds of formula II: wherein R1 represents cyclopropyl, cyclobutyl or cyclopentyl, R2, R3 and R4 are as defined in the specification, and a liquid crystal display device. The liquid crystal composition has positive dielectric properties, a high charge retention ratio, a low rotary viscosity, a fast response time, and especially a high transmittance, and is suitable for manufacturing a TFT-LCD with a high transmittance and a fast response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.