Composition and liquid crystal display element using same

Abstract

Provided is a composition that has a liquid crystal phase over a wide temperature range, little viscosity, excellent solubility at low temperatures, and high specific resistance and voltage retention, and is also heat- and light-stable. Using this composition also provides, at a high yield, an IPS, TN or other type of liquid crystal display element that has superior display quality and that is less susceptible to display defects such as burn-in and drip marks. Provided is a composition containing a compound represented by general formula (i), two or more compounds represented by general formula (M-3), and a compound represented by formula (L-1-1.3). Also provided is a liquid crystal display element using the same.

Description

Technical field [0001] The present invention relates to a composition exhibiting a positive value of dielectric anisotropy (Δε) useful as a liquid crystal display material and a liquid crystal display element using the composition. Background technique [0002] Starting from clocks and calculators, liquid crystal display elements have evolved to be used in various measuring equipment, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, and advertising display boards. As a liquid crystal display method, representative methods include TN (twisted nematic) type, STN (super twisted nematic) type, vertical alignment type using TFT (thin film transistor), IPS (in-plane switching) type, and the like. The liquid crystal compositions used in these liquid crystal display elements are required to be stable against external stimuli such as moisture, air, heat, and light, and in addition, exhibit a liquid crystal phase in a temperature range as ...

AI Technical Summary

Problems solved by technology

If the difference between the injection amount and the optimum value becomes large, the balance between the refraction index and the driving electric field designed in advance of the liquid crystal display element will collapse, and display defects such as the occurrence of spots and poor contrast will occur.

In particular, it is difficult to control the deviation from the optimum value within a certain range since the optimum liquid crystal injection amount is small, especially for the small liquid crystal display elements that are widely used in the recently popular smartphones.

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