Liquid crystal compound, liquid crystal display element and liquid crystal display

Abstract

The invention relates to a liquid crystal compound, a liquid crystal display element including the liquid crystal compound and a liquid crystal display and belongs to the field of liquid crystal display. The liquid crystal compound disclosed by the invention comprises at least one compound shown as formula I served as an additive and one or more compound shown as formula II. The liquid crystal compound has higher clearing point (CP), appropriate optical anisotropism (delta n), high response speed, high ultraviolet stability and high thermal stability.

Description

technical field [0001] The present disclosure belongs to the field of liquid crystal display, and more specifically relates to a liquid crystal composition, a liquid crystal display element and a liquid crystal display containing the liquid crystal composition. Background technique [0002] Liquid crystal display elements are divided into the following modes according to the display mode: twisted nematic (TN) mode, super twisted nematic (STN) mode, in-plane mode (IPS), and vertical alignment (VA) mode. Regardless of the display mode, the liquid crystal composition needs to have the following characteristics: [0003] (1) stable chemical and physical properties; (2) low viscosity; (3) suitable dielectric Δε; (4) suitable refractive index Δn; (5) good miscibility with other liquid crystal compounds. [0004] The early commercial TFT-LCD products basically adopted the TN display mode, and the biggest problem was the narrow viewing angle. With the increase of product size, esp...

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Problems solved by technology

However, when our liquid crystal material meets the basic characteristics required by the above displays (low driving voltage, fast response), its reliability problems will be exposed one by one, especially the stability of UV light becomes worse

Therefore, solving the reliability of such liquid crystal media has become a thorny issue. In other words, we are required to invent or propose one or more compounds that improve the stability of liquid crystal media to solve the reliability problem of liquid crystal media.

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