Liquid crystal compound and liquid crystal composition

US10703974B2 · kind B2 · utility

Assignee

• SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD. · CN

Inventors

• Guoliang Yun · Shijiazhuang, CN
• Ke-Lun Shu · Shijiazhuang, CN
• Zhe Shao · Beijing, CN
• Xing Zhang · Shijiazhuang, CN
• Jianming Cheng · Shijiazhuang, CN
• Limei Zhang · Jiaocheng District, CN

Key dates

• Filing date: May 25, 2018
• Grant date: Jul 7, 2020
• Expiry date: May 25, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3422
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Provided is a liquid crystal compound represented by formula I, the compound having a positive dielectric anisotropy, a great elastic constant and a good solubility. Further provided is a liquid crystal composition comprising the liquid crystal compound represented by formula I, the liquid crystal composition having a good stability against light and heat, a lower viscosity, a wider refractive index that may be achieved by the adjustment of the monomer ratio, and a higher clearing point (a very wide service temperature range), and in particular, the liquid crystal composition has a higher light transmittance, thus allowing a display device to have a higher brightness or an energy saving effect.