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Liquid crystal composition containing methoxy bridged bond negative liquid crystal compound and having large elastic constant and application thereof

A technology of liquid crystal composition and methoxy bridge, applied in liquid crystal materials, nonlinear optics, chemical instruments and methods, etc., can solve problems such as light leakage and poor ratio performance.

Active Publication Date: 2021-07-06
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The planar arrangement of IPS and FFS liquid crystals leads to light leakage easily in the dark state, and the contrast performance is obviously inferior to VA (MVA, PVA, UV2A, PSVA) displays

Method used

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  • Liquid crystal composition containing methoxy bridged bond negative liquid crystal compound and having large elastic constant and application thereof
  • Liquid crystal composition containing methoxy bridged bond negative liquid crystal compound and having large elastic constant and application thereof
  • Liquid crystal composition containing methoxy bridged bond negative liquid crystal compound and having large elastic constant and application thereof

Examples

Experimental program
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specific Embodiment approach

[0109] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0110] Unless otherwise stated, percentages in the present invention are percentages by weight; temperature unit is Celsius; Δn represents optical anisotropy (25°C); ε ∥ and ε ⊥ Represent the parallel and perpendicular dielectric constants (25°C, 1000Hz); △ε represents the dielectric anisotropy (25°C, 1000Hz); γ1 represents the rotational viscosity (mPa.s, 25°C); Cp represents the clearness of the liquid crystal composition Bright spot (°C); K 11 、K 22 、K 33 Represent splay, torsion and bending elastic constants (pN, 25°C), respectively.

[0111] In the following examples, the group structures in liquid crystal compounds are represented by the codes shown in Table 1.

[0112] Table 1: Group structure codes of liquid crystal compounds

[0113]

[0114]

[0115] Take the following compound structure as an example:

[0116] ...

Embodiment 1

[0123] Table 2: Weight percent and performance parameters of each component in the liquid crystal composition

[0124]

Embodiment 2

[0126] Table 3: Weight percent and performance parameters of each component in the liquid crystal composition

[0127]

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Abstract

The invention relates to a liquid crystal composition containing a methoxy bridged bond negative liquid crystal compound and having a large elastic constant and application thereof. The liquid crystal composition comprises at least one or more compounds represented by a general formula I, one or more compounds represented by a general formula II and one or more compounds represented by a general formula III. The liquid crystal composition has large elastic constant and fast response time, and can improve the contrast ratio of a liquid crystal display when being used in the liquid crystal display.

Description

technical field [0001] The invention relates to the field of liquid crystal material and its application, in particular to a liquid crystal composition with a large elastic constant containing a methoxy bridging negative liquid crystal compound and its application. Background technique [0002] At present, LCD display, as the most mainstream display, has been widely used in various products. Among them, IPS and FFS mode displays are widely used in mobile phones, notebook computers, and tablets because of their unique hard screen characteristics and very wide viewing angle characteristics. Computers, computer monitors, televisions, etc. [0003] The planar arrangement of IPS and FFS liquid crystals leads to light leakage easily in the dark state, and the contrast performance is obviously inferior to VA (MVA, PVA, UV2A, PSVA) displays. After research, it is found that when the liquid crystal molecules are initially aligned, due to the alignment debris on the surface of the al...

Claims

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Application Information

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IPC IPC(8): C09K19/44G02F1/1333
CPCC09K19/44G02F1/1333G02F1/13
Inventor 陈卯先储士红姜天孟陈海光未欣
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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