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Liquid crystal composition containing polymerizable compound and liquid crystal display element

A technology of polymeric compounds and liquid crystal compositions, applied in liquid crystal materials, chemical instruments and methods, nonlinear optics, etc., can solve problems such as burn-in screen display failure, orientation deterioration, and insufficient tilt formation, and achieve degradation suppression and voltage retention ratio (VHR) reduction, shortened UV irradiation time, and excellent display quality effects

Pending Publication Date: 2021-06-25
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, by increasing the area of ​​the wiring and the light-shielding part, a considerable part of the UV light will be filtered out. In the same UV irradiation process as in the past, the formation of the inclination will become insufficient, the polymerizable compound will not be sufficiently polymerized, and a large amount of Problems such as residues of polymeric compounds
In addition, it was confirmed that this would cause image sticking due to poor response speed and poor orientation, and that the residual polymerizable compound would gradually polymerize during driving, changing the inclination and causing display defects such as screen burn-in (IS)

Method used

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  • Liquid crystal composition containing polymerizable compound and liquid crystal display element
  • Liquid crystal composition containing polymerizable compound and liquid crystal display element
  • Liquid crystal composition containing polymerizable compound and liquid crystal display element

Examples

Experimental program
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Embodiment

[0651] The following examples are given to further describe the present invention in detail, but the present invention is not limited by these examples.

[0652] The following abbreviations are used for descriptions of compounds in the following Examples and Comparative Examples.

[0653] (side chain)

[0654] -n-C n h 2n+1 straight-chain alkyl group with n carbon atoms

[0655] n-C n h 2n+1 - straight-chain alkyl group with n carbon atoms

[0656] -On-OC n h 2n+1 straight-chain alkoxy group with n carbon atoms

[0657] V-CH 2 =CH-

[0658] 1V-CH 3 -CH=CH-

[0659] -V-CH=CH 2

[0660] -V1-CH=CH-CH 3

[0661] (Linker)

[0662] -1O--CH 2 -O-

[0663] -2--CH 2 -CH 2 -

[0664] (ring structure)

[0665] [chem 89]

[0666]

[0667] The characteristics measured in the following examples and comparative examples are as follows.

[0668] T ni : Nematic-isotropic liquid phase transition temperature (°C)

[0669] Δn: Refractive index anisotropy at 20°C

[...

Embodiment 5～6

[0711] In 99 parts by mass of liquid crystal composition LC-001, add 1 part by mass of a compound represented by formula (i-1-1-4A) as a compound of formula (i) and 0.3 parts by mass of a compound of formula (RM- The polymerizable compound A represented by A1, and the obtained polymerizable compound-containing liquid crystal composition were used as Example 5.

[0712] In 99 parts by mass of liquid crystal composition LC-001, add 1 part by mass of a compound represented by formula (i-1-1-37A) as a compound of formula (i) and 0.3 parts by mass of a compound of formula (RM- The polymerizable compound A represented by A1, and the obtained polymerizable compound-containing liquid crystal composition were used as Example 6.

[0713] [chem 91]

[0714]

[0715] Regarding the polymerizable compound-containing liquid crystal compositions of Examples 5 to 6, the UV irradiation time T when the remaining amount of the polymerizable compound is less than the lower limit of detection ...

Embodiment 7～12

[0720] In 99 parts by mass of liquid crystal composition LC-002, add 1 part by mass of a compound represented by formula (i-1-1-4A) as a compound of formula (i) and 0.3 parts by mass of a compound of formula (RM- The polymerizable compound A represented by A1, and the obtained polymerizable compound-containing liquid crystal composition were used as Example 7.

[0721] In 99 parts by mass of liquid crystal composition LC-002, add 1 part by mass of a compound represented by formula (i-1-1-37A) as a compound of formula (i) and 0.3 parts by mass of a compound of formula (RM- The polymerizable compound A represented by A1, and the obtained polymerizable compound-containing liquid crystal composition were used as Example 8.

[0722] In 99 parts by mass of liquid crystal composition LC-002, add 1 part by mass of a compound represented by formula (i-1-1-4B) as a compound of formula (i) and 0.3 parts by mass of a compound of formula (RM- The polymerizable compound A represented by A1...

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Abstract

The invention provides a liquid crystal composition containing a polymerizable compound and a liquid crystal display element. The present invention addresses the problem of providing: a polymerizable liquid crystal composition which can be rapidly and sufficiently polymerized, can form a tilt with weak or little UV light, has excellent reliability after a UV irradiation step, and is useful when used in the production of a liquid crystal display element; and a liquid crystal display element using the polymerizable liquid crystal composition. [Solution] The present invention provides a liquid crystal composition containing a polymerizable compound, the composition containing one or more compounds represented by general formula (i) and one or more polymerizable compounds, the total content of the compounds represented by general formula (i) being within a predetermined range.

Description

technical field [0001] The present invention relates to a liquid crystal composition containing a polymerizable compound and a liquid crystal display device using the same. In addition, in this specification, the liquid crystal composition containing a polymeric compound is called the liquid crystal composition containing a polymeric compound. In addition, a polymeric compound means a compound which has a polymeric group. Background technique [0002] For example, the PSA (Polymer Sustained Alignment, polymer stable alignment) mode liquid crystal display element has a structure in which a polymer structure is formed in the cell in order to control the pretilt angle of the liquid crystal molecules, and has been used as a liquid crystal display due to high-speed response and high contrast. components are practical. [0003] The manufacture of a PSA mode liquid crystal display element is carried out by injecting a liquid crystal composition containing a polymerizable compound...

Claims

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Application Information

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IPC IPC(8): C09K19/54G02F1/1333
CPCC09K19/542G02F1/1333
Inventor 后藤麻里奈井之上雄一野吕大树
Owner DIC CORP
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