VA type liquid crystal display device

A liquid crystal display and device technology, applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve problems such as inability to respond quickly, insufficient absolute value of liquid crystal medium, low viscosity of liquid crystal medium, etc.

Active Publication Date: 2019-01-15
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems to be solved in the current VA liquid crystal display device. For example, the absolute value of the negative dielectric anisotropy of the liquid crystal medium is not large enough, resulting in a low enough driving voltage, and the viscosity of the liquid crystal medium is not low enough, resulting in the inability to cope with the rapid response. need

Method used

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  • VA type liquid crystal display device
  • VA type liquid crystal display device
  • VA type liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0181] The liquid crystal composition of Example 1 was prepared by each compound listed in Table 3 and the weight percentage, which was filled between the liquid crystal display devices of the present invention for performance testing. The test data are shown in the following table:

[0182] Table 3 liquid crystal composition formula and test performance thereof

[0183]

[0184]

Embodiment 2

[0186] The liquid crystal composition of Example 2 was prepared by each compound listed in Table 4 and the weight percentage, which was filled between the liquid crystal display devices of the present invention for performance testing, and the test data are shown in the following table:

[0187] Table 4 liquid crystal composition formula and test performance thereof

[0188]

Embodiment 3

[0190] The liquid crystal composition of Example 3 was prepared by each compound listed in Table 5 and the weight percentage, which was filled between the liquid crystal display devices of the present invention for performance testing. The test data are shown in the following table:

[0191] Table 5 liquid crystal composition formula and test performance thereof

[0192]

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Abstract

The invention discloses a liquid crystal display device. The liquid crystal display device comprises an upper polarizer, an upper substrate, an upper electrode layer, an upper alignment layer, a liquid crystal layer, a lower alignment layer, a lower electrode layer, a lower substrate, and a lower polarizer. The liquid crystal layer contains a liquid crystal composition having the negative dielectric anisotropy. The liquid crystal composition contains at least one or more compounds of the formula I. The VA type liquid crystal display device provided by the invention has the characteristics of wide viewing angle and high contrast, and also has the advantages of fast response and good performance in low-temperature storage. Further, the liquid crystal composition in the liquid crystal displaydevice of the invention also has a high clearing point and a low dielectric anisotropy, which is beneficial to reduce the driving voltage of the liquid crystal display device and reduce the power consumption.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a VA type liquid crystal display device. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook Computer screens, etc., dominate the field of flat panel displays. [0003] Active thin film transistor liquid crystal display (Thin Film Transistor-LCD, TFT-LCD) has been developed rapidly and widely used in recent years. As far as TFT-LCD display panels currently on the mainstream market are concerned, they can be divided into three types, namely twisted nematic (Twisted Nematic, TN) or super twisted nematic (Super Twisted Nematic, STN) type, in-plane switching (In -Plane Switching (IPS) type and Vertical Alignment (Vertical Alignment, VA) type. Compared with other types...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/137C09K19/44
CPCC09K19/44G02F1/137G02F1/13712
Inventor 周振婷严加浩丁文全
Owner JIANGSU HECHENG DISPLAY TECHCO
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