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Additives for liquid crystal mixtures

A liquid crystal and compound technology, applied in liquid crystal materials, optics, instruments, etc., can solve the problems of periodic annular irregularity and uneven display on the surface of the display

Pending Publication Date: 2019-07-26
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A known problem when using conventional liquid crystal mixtures is also the occurrence of so-called "ODF mura" or "ODF drop mura", which are characterized, for example, by the display surface along the liquid Periodic annular irregularities at the drop boundary

Method used

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  • Additives for liquid crystal mixtures
  • Additives for liquid crystal mixtures
  • Additives for liquid crystal mixtures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 or 2

[0353] Similar to embodiment 1 or 2, prepare the following substances:

[0354] Synthesis Example 3

[0355]

[0356] The melting point is 65°C (C 65I).

[0357] Synthesis Example 4

[0358]

[0359] Synthesis Example 5

[0360]

[0361] Melting point 40°C (C 40SmA(23)I)

[0362] Synthesis Example 6

[0363]

[0364] Melting point 36°C (C 36I)

[0365] Synthesis Example 7

[0366]

[0367] A mixture of isomers prepared by catalytic hydrogenation of the product obtained in Synthesis Example 2. Oil (main fraction: Tg-38℃I)

[0368] Synthesis Example 8

[0369]

[0370] Oil (Tg-19℃I)

[0371] Synthetic Example 9:

[0372]

[0373] Synthetic Example 10:

[0374]

[0375] Synthetic Example 11:

[0376]

[0377] Synthetic Example 12:

[0378]

[0379] Synthetic Example 13:

[0380]

[0381] Synthetic Example 14:

[0382]

[0383] Oil.

[0384] 1 H NMR (500MHz, chloroform-d) δ7.55-7.41(m, 2H), 7.27(dd, J=7.7,5.9Hz, 2H), 6.84(d, J=2...

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Abstract

The invention relates to polyfluorinated additives for use as components in liquid crystal mixtures, liquid crystal mixtures containing these compounds, and liquid crystal displays on the basis of such mixtures.

Description

technical field [0001] The present invention relates to polyfluorinated additives for use as components in liquid crystal mixtures, to liquid crystal mixtures comprising said compounds, and to liquid crystal displays based on these mixtures. Background technique [0002] Since the discovery of the first commercially available liquid crystal compounds about 40 years ago, liquid crystals have found a wide range of applications. Known fields of application today are simple digital displays, displays of portable and desktop computers, navigation systems and especially also televisions. In particular, for displays that can play video, there are high requirements for response time and image contrast. [0003] The spatial arrangement of the molecules in a liquid crystal causes many of its properties to be direction-dependent. Important here for the use in liquid crystal displays is especially the anisotropy in terms of optical, dielectric and elastomechanical behavior. Depending...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/30C09K19/04C09K19/12C09K19/34
CPCC09K19/04C09K19/3098C09K2019/0444C09K2019/0466C09K2019/122C09K2019/123C09K2019/124C09K2019/3004C09K2019/3009C09K2019/301C09K2019/3016C09K2019/3021C09K2019/3027C09K2019/3408C09K2019/3422C09K19/3003C09K19/3402C09K19/3405C09K19/3491C09K19/54C09K19/542G02F1/1341G02F1/13415
Inventor P·克施童琼H·哈斯K·C·德因C·玛藤A·珀勒R·弗里德里西
Owner MERCK PATENT GMBH