Liquid crystal display element
A technology of liquid crystal display element and liquid crystal layer, which is applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of liquid crystal composition orientation disorder, uneven dropping, etc., and achieve poor display suppression, high practicability, and low temperature stability excellent effect
Active Publication Date: 2021-06-01
DIC CORP
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Problems solved by technology
Due to this structural feature, there are problems that the alignment of the liquid crystal composition tends to be disturbed, and when the liquid crystal composition is applied to the substrate, unevenness in dripping occurs.
Method used
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Embodiment 1～7
[0650] Liquid crystal compositions (compositions 1 to 7) having the compositions shown below were prepared.
[0651] [Table 1]
[0652] Composition 1 Composition 2 Composition 3 Composition 4 Tni 94.8 92.8 102.5 81.6 Δn 0.111 0.109 0.124 0.104 Δε 7.2 7.1 16.4 13.0 n 18.5 14.2 35.0 18.6 gamma 1
[0653] [Table 2]
[0654] Composition 5 Composition 6 Composition 7 Tni 91.3 81.6 104.8 Δn 0.100 0.104 0.118 Δε 8.9 13.0 11.2 n 16.0 18.6 16.1 gamma 1
[0655] A polymerizable liquid crystal composition 1 was prepared by adding 0.3 g of a polymerizable compound represented by the formula (Mn-1) to 100 g of the above-mentioned composition 1 . Polymerizable liquid crystal compositions 2-7 were prepared similarly.
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Abstract
The subject of the present invention is to provide a dielectric constant anisotropy (Δε), viscosity (η), nematic phase-isotropic liquid phase transition temperature (Tni), nematic phase stability at low temperature, rotational viscosity ( γ1) is a liquid crystal display element using a p-type liquid crystal composition that is excellent in various characteristics of a liquid crystal display element and can realize excellent display characteristics by using a horizontal alignment liquid crystal display element equipped with a photoalignment film. Provide a liquid crystal display element by containing one or two or more compounds represented by general formula (P), and containing one or two or more compounds represented by general formula (ii), one or two or more general formula By combining the compound represented by (iii) with one or more compounds represented by the general formula (iv), the liquid crystal composition maintains high-speed responsiveness and is excellent in low-temperature stability.
Description
technical field [0001] The present invention relates to a liquid crystal display element using a nematic liquid crystal composition having a useful dielectric constant anisotropy (Δε) showing a positive value as a liquid crystal display material. Background technique [0002] At present, as a liquid crystal display for smartphones, a horizontal orientation method with high quality and excellent visual characteristics, such as IPS (In-Plane Switching) mode or a type of liquid crystal display element of this IPS, that is, a boundary electric field switching mode liquid crystal is widely used. Display element (Fringe Field Switching mode Liquid Crystal Display, FFS mode liquid crystal display device) (see Patent Document 1, Patent Document 2). The FFS mode is introduced to improve the low aperture ratio and transmittance of the IPS mode. Currently, as a liquid crystal composition used in a lateral alignment type liquid crystal display device, a material utilizing a p-type liqu...
Claims
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IPC IPC(8): G02F1/1337C08F20/22C09K19/20C09K19/30C09K19/34C09K19/54G02F1/13
CPCC08F20/22C09K19/20C09K19/30C09K19/34C09K19/54G02F1/13G02F1/1337C09K19/3402C09K19/44
Inventor 小川真治岩下芳典根岸真
Owner DIC CORP