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Liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication device, and antenna using same

A technology of liquid crystal composition and compound, which is applied in antennas, liquid crystal materials, electrical components, etc., can solve the problems of low compatibility and achieve the effect of high refractive index anisotropy and good stability at room temperature

Pending Publication Date: 2022-05-06
DIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Furthermore, it is known that most liquid crystal compounds constituting a liquid crystal composition exhibiting a high Δn of 0.2 to 0.4 or more have low compatibility

Method used

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  • Liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication device, and antenna using same
  • Liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication device, and antenna using same
  • Liquid crystal composition, and liquid crystal display element, sensor, liquid crystal lens, optical communication device, and antenna using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[1285] (Example 1 to Example 9 and Comparative Example 1)

[1286] The liquid crystal compositions of Examples 1 to 9 and Comparative Example 1 were produced, and their physical properties were measured. The results are shown in Table 3 and Table 4.

[1287] [table 3]

[1288] Example 1 Example 2 Example 3 Example 4 Example 5 T ni

155.2 149.1 157.6 137.8 162.3 T →n

G-35 G-38 G-25 G-17 G-23 Δn 0.395 0.391 0.385 0.378 0.401 Δε 14.58 14.46 14.67 14.55 14.46 V th

2.036 2.002 2.034 1.933 2.119 Room temperature stability no precipitation no precipitation no precipitation no precipitation no precipitation 3-Tet3-T-Ph-T-Ph1-NCS 7 7 7 5 5 3-Tet3-T-Ph-T-Ph3-NCS 4-Tet3-Ph-T-Ph3-NCS 5-Cy-Ph-NCS 3 3 3 4O-Ph-T-Ph1-NCS 5 5 5 5 5 4O-Ph2-T-Ph-NCS 8 8 5 8 5 5O-Ph2-T-Ph-NCS 5 5 3 5 5 3-Ph-T-Ph3-NCS 10 10 10 12 10 ...

Embodiment 10～ Embodiment 11

[1295] The same results were confirmed as a result of producing the liquid crystal compositions of Examples 10 to 11 and measuring their physical properties. The results are shown in Table 5.

[1296] [table 5]

[1297] Example 10 Example 11 T ni

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Abstract

The present invention addresses the problem of providing: a liquid crystal composition having a liquid crystal phase in a wide temperature range, high [delta] n (refractive index anisotropy), and good normal temperature stability; and a liquid crystal display element, a sensor, a liquid crystal lens, an optical communication device, and an antenna using the same. A liquid crystal composition comprising one or more compounds represented by general formula (ii) having an isothiocyanate group (-NCS), the liquid crystal composition being obtained by using one or more compounds represented by general formula (i) having an indane structure or a tetrahydronaphthalene structure and an isothiocyanate group (-NCS) in combination with one or more compounds represented by general formula (i), the liquid crystal composition comprising one or more compounds represented by general formula (ii) having an isothiocyanate group (-NCS).

Description

technical field [0001] The present invention relates to a liquid crystal composition and a liquid crystal display element, a sensor, a liquid crystal lens, an optical communication device and an antenna using the same. Background technique [0002] Antennas that use liquid crystals to transmit and receive radio waves between mobile bodies such as automobiles and communication satellites are attracting attention as novel uses of liquid crystals that are often used in displays. Conventionally, satellite communication has used a parabolic antenna (parabola antenna), but when used in a mobile body such as an automobile, the parabolic antenna must always be directed toward the satellite, and a large movable part is required. However, antennas using liquid crystals can change the direction of transmission and reception of radio waves through the operation of liquid crystals, so the shape of the antenna can be flat without moving the antenna itself. [0003] In general, for the au...

Claims

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Application Information

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IPC IPC(8): C09K19/44G02F1/1333H01Q15/16
CPCC09K19/44G02F1/1333H01Q15/16
Inventor 高崎美花大石晴己梅津安男平田真一
Owner DIC CORP
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