Liquid crystal composition capable of rapidly responding to cyclo-butylbenzene difluoromethoxy

A technology of cyclobutadiene difluoromethoxy and liquid crystal composition, which is applied in the direction of liquid crystal materials, chemical instruments and methods, etc., can solve the problems of liquid crystal materials such as high viscosity at low temperature, animation smear, and large temperature dependence, and achieve Effects of high resistivity and voltage retention, low overall response time, and low rotational viscosity

Inactive Publication Date: 2013-09-18
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, thin film transistor liquid crystal display (TFT-LCD) has become the mainstream of liquid crystal display technology. However, compared with other liquid crystal display technologies, TFT-LCD still has problems such as relatively slow response speed and animation smear, especially in low temperature display. Slow speed and obvious image smear greatly affect the low temperature working range of TFT-LCD
The main factor causing this phenomenon is that the low-temperature viscosity of the liquid crystal material is large, and the low-temperature response speed is highly dependent on temperature.

Method used

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  • Liquid crystal composition capable of rapidly responding to cyclo-butylbenzene difluoromethoxy
  • Liquid crystal composition capable of rapidly responding to cyclo-butylbenzene difluoromethoxy
  • Liquid crystal composition capable of rapidly responding to cyclo-butylbenzene difluoromethoxy

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Experimental program
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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the examples.

[0034] The percentages in this manual are all mass percentages; the temperature is in degrees Celsius (°C); the specific meanings and test conditions of other symbols are as follows:

[0035] c.p. (°C) represents the clearing point of liquid crystal; S-N represents the melting point (°C) of liquid crystal from crystalline state to nematic phase; △n is optical anisotropy, no is the refractive index of ordinary light, and ne is the refractive index of extraordinary light , the test conditions are: 589nm, 25°C; △ε is the dielectric anisotropy, △ε=ε∥-ε⊥, where ε∥ is the dielectric constant parallel to the molecular axis, ε⊥ is the dielectric constant perpendicular to the molecular axis Dielectric constant, the test conditions are: 25°C, 1KHz, HP4284A, 5.2 micron TN left-handed box; τ is the response time (ms), the test instrument is DMS-501, the test conditions are: 25±0.5°C,...

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Abstract

The invention discloses a liquid crystal composition capable of rapidly responding to cyclo-butylbenzene difluoromethoxy. The liquid crystal composition comprises 1-40% of compounds shown as the general formula I, 1-70% of compounds shown as the general formula II, 1-55% of compounds shown as the general formula III, 0-40% of compounds shown as the general formula IV and 0-40% of compounds shown as the general formula V. The liquid crystal composition has the advantages of wide nematic phase temperature range, proper dielectric anisotropy, proper optical anisotropy, high charge retention rate, short response time and low rotary viscosity, and is suitable for manufacturing active matrix TN-TFT (Twisted Nematic-Thin Film Transistor), IPS-TFT (Intrusion Prevention System-Thin Film Transistor) displays (I), (II), (III), (IV) and (V) capable of realizing rapid response.

Description

technical field [0001] The invention relates to a liquid crystal display material, in particular to a cyclobutadiene difluoromethoxy fast-response liquid crystal composition. Background technique [0002] Liquid crystal display technology is one of the main display methods in the field of flat panel display, and it has been widely used in various display terminals. At present, thin film transistor liquid crystal display (TFT-LCD) has become the mainstream of liquid crystal display technology. However, compared with other liquid crystal display technologies, TFT-LCD still has problems such as relatively slow response speed and animation smear, especially in low temperature display. Slow speed and obvious image smear greatly affect the low temperature working range of TFT-LCD. The main factor causing this phenomenon is that the low-temperature viscosity of the liquid crystal material is large, and the low-temperature response speed is highly dependent on temperature. It can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/30C09K19/44C09K19/12C09K19/34C09K19/46
Inventor 贾刚刚毛联波丰景义孟劲松华瑞茂田伟亮
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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