Compound, liquid crystal composition, and liquid crystal display element

Abstract

The invention provides a compound, a liquid crystal composition and a liquid crystal display element. The present invention addresses the problem of providing a liquid crystal display element capable of achieving high-speed responsiveness and a high voltage holding ratio (VHR); a liquid crystal composition containing a polymerizable compound and capable of achieving fast polymerization velocity, adaptive tilt formation, high tilt stability, and a high voltage holding ratio (VHR); a PSA-type or PSVA-type liquid crystal display element in which screen burn-in (IS) is sufficiently suppressed or does not occur and which utilizes the composition; and a compound which is suitable for preparing the liquid crystal composition containing the polymerizable compound. As a solution, the invention provides: a compound having a structure represented by the formula (K-1) in the molecule; a liquid crystal composition containing the compound; and an element using the liquid crystal composition. The chemical formula 1 is shown in the specification.

Description

technical field [0001] The present invention relates to a liquid crystal composition, a liquid crystal display device using the same, and a polymerizable compound. Background technique [0002] In liquid crystal display elements using a liquid crystal composition having a negative dielectric constant anisotropy Δε, PSA and PSVA type liquid crystal TVs, liquid crystal monitors, etc. are becoming popular, and as a liquid crystal composition suitable for these applications, Patent Document 1 , Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, etc. disclose various polymerizable compounds and liquid crystal compositions containing them. [0003] However, the characteristics of liquid crystal compositions containing polymerizable compounds that have been commonly used so far are not sufficient for high-definition liquid crystal TVs such as 4K and 8K. Specifically, 4K and 8K liquid crystal display elements require high-definition pixels, and a considerab...

AI Technical Summary

Problems solved by technology

Therefore, in the UV irradiation process in the manufacture of PSA-type and PSVA-type liquid crystal display elements, the polymerizable compound cannot be sufficiently polymerized, and many polymerizable compounds remain.

From this, it was confirmed that image sticking due to insufficient tilt formation, deterioration of response speed, and deterioration of orientation was also confirmed. In addition, it was also confirmed that the remaining polymerizable compound slowly polymerized during driving to change the tilt, resulting in what is called burn-in (IS) bad display of

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