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Negative dielectric anisotropy liquid crystal composition and liquid crystal display device

A liquid crystal composition and anisotropic technology, applied in liquid crystal materials, instruments, nonlinear optics, etc., can solve the problems of affecting stability and increasing image retention of liquid crystal media, so as to improve stability, increase VHR, and reduce image retention Effect

Active Publication Date: 2021-09-17
YANTAI XIANHUA CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the improvement of fast response time often leads to increased image sticking of liquid crystal media, especially after light exposure, which affects its stability.

Method used

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  • Negative dielectric anisotropy liquid crystal composition and liquid crystal display device
  • Negative dielectric anisotropy liquid crystal composition and liquid crystal display device
  • Negative dielectric anisotropy liquid crystal composition and liquid crystal display device

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Embodiment

[0088] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0089] In the present invention, the preparation method is a conventional method unless otherwise specified, and the raw materials used can be obtained from open commercial channels if not otherwise specified, and the percentages all refer to mass percentages, the temperature is degrees Celsius (°C), and the liquid crystal compound is also liquid crystal monomer.

[0090] [Negative Dielectric Anisotropy Liquid Crystal Composition]

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Abstract

The invention relates to a negative dielectric anisotropy liquid crystal composition and a liquid crystal display device. The liquid crystal composition comprises: at least one compound represented by a formula I; and at least one compound as shown in a formula II. Compared with the prior art, the liquid crystal composition disclosed by the invention has a reduced G1 / K11 or G1 / K33 value on the basis of maintaining proper optical anisotropy value and dielectric anisotropy so as to have relatively short response time, and has high VHR after being irradiated by UV light, so that the display advantages of reducing power consumption and improving stability can be obtained, and the phenomenon of residual images of the display can be avoided / reduced.

Description

technical field [0001] The invention relates to the technical field of liquid crystal materials. More specifically, it relates to a liquid crystal composition and a liquid crystal display device. Background technique [0002] With the development of technology and the progress of the times, the field of application of liquid crystal mixtures has gradually extended to monitors for portable computers and desktop computers, navigation systems and video applications. These fields of application place increasingly high demands on the properties of liquid crystal mixtures. [0003] The spatial arrangement of molecules in liquid crystals has an important effect on liquid crystal displays. Wherein, the dielectric constant ε of the liquid crystal medium has different values ​​relative to the direction parallel to the capacitor and the direction perpendicular to the capacitor. Dielectricity is said to be dielectrically positive when the molecular longitudinal axis is oriented perpe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/42G02F1/137
CPCC09K19/42G02F1/13712
Inventor 舒克伦尹硕李学贵赖育宏丰佩川
Owner YANTAI XIANHUA CHEM TECH CO LTD
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