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Nematic liquid crystal composition and liquid crystal display element using same

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, chemical instruments and methods, instruments, etc., can solve problems such as uneven display of manufacturing processes

Active Publication Date: 2022-05-31
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, display unevenness due to the manufacturing process may occur in the manufactured device, and as a method of improving this, a method of using a specific liquid crystal material is disclosed (see Patent Document 3).

Method used

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  • Nematic liquid crystal composition and liquid crystal display element using same
  • Nematic liquid crystal composition and liquid crystal display element using same
  • Nematic liquid crystal composition and liquid crystal display element using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

When the liquid crystal composition LC-1 that is made up of compound and ratio as shown below is set as 100 mass %,

[0301] [Ch 52]

(LC-1)

[0303]

Add 5 mass % as compound (X1-9-3) of compound (1) of the present invention,

[0305] [Ch 53]

[0306]

[0307] The liquid crystal composition (VLC-1) of the present invention was prepared. It should be noted that T of LC‑1

Embodiment 2

Embodiment 3

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PUM

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Abstract

The present invention relates to a liquid crystal composition in which Δε is negative, which is a liquid crystal composition for a VA display mode, and which can obtain a uniform and stable vertical alignment over a long period of time. To provide a negative Δε liquid crystal composition capable of obtaining uniform and stable vertical alignment over a long period of time regardless of the presence or absence of a vertical alignment film on various substrates such as transparent electrodes, and a liquid crystal display device using the same. A liquid crystal display element using the liquid crystal composition of the present invention is useful for an active matrix drive liquid crystal display element, and can be used for a PSA mode, PSVA mode, or VA mode liquid crystal display element.

Description

Nematic liquid crystal composition and liquid crystal display element using the same technical field [0001] The present invention relates to useful liquid crystal compositions and liquid crystal display elements using the same. Background technique Liquid crystal display elements have been used in timepieces and calculators, and have gradually been used in various measuring equipment, automotive panels, text Word processors, electronic notepads, printers, computers, televisions, clocks, advertising display boards, etc. As a liquid crystal display mode, its Typical forms include TN (Twisted Nematic) type, STN (Super Twisted Nematic) type, and VA using TFT (Thin Film Transistor). (Vertical Alignment) type, IPS (In-Plane Switching) type, FFS (Fringe Field Switching) type, and the like. Generally speaking, the dielectric constant anisotropy (Δε) used in the VA type liquid crystal display element (liquid crystal display) is negative The main use of the liquid crystal c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/54C09K19/38G02F1/13
CPCC09K19/38C09K19/54G02F1/13
Inventor 木村正臣须藤豪梅津安男
Owner DIC CORP