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Measuring device, measuring system, and measuring method of liquid crystal dielectric constant

A technology for measuring device and dielectric constant, which is applied in the field of measuring device for liquid crystal dielectric constant, can solve the problems of complex structure of the measuring device, low measurement sensitivity, and low measurement accuracy, and achieve high measurement accuracy, high sensitivity, and low cost Effect

Active Publication Date: 2020-06-02
BOE TECH GRP CO LTD
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Problems solved by technology

However, the current existing measurement methods have problems such as low measurement sensitivity, low measurement accuracy, complex structure of the measurement device, high cost, and low measurement efficiency.

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  • Measuring device, measuring system, and measuring method of liquid crystal dielectric constant
  • Measuring device, measuring system, and measuring method of liquid crystal dielectric constant
  • Measuring device, measuring system, and measuring method of liquid crystal dielectric constant

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Embodiment Construction

[0045] In order to make the above objects, features and advantages of the present disclosure more comprehensible, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

[0046] For the measurement of the dielectric constant of liquid crystal materials in the terahertz frequency band, in the related art, the liquid crystal is poured into a resonant cavity composed of a terahertz semi-permeable membrane, and then the cavity is irradiated with a terahertz wave. According to the cavity The transmission characterist...

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Abstract

The present disclosure provides a measurement device, measurement system, and measurement method for the dielectric constant of liquid crystals, so as to improve the sensitivity, accuracy and measurement efficiency of the measurement of the dielectric constant of liquid crystals in the terahertz frequency band, and simplify the structure of the measurement device. Reduce measurement costs. Wherein the measuring device comprises: a first substrate and a second substrate arranged oppositely; a resonant structure layer and a first alignment film arranged in sequence on the side of the first substrate facing the second substrate; arranged on the side of the second substrate facing the first substrate The second alignment film on the top; the frame arranged between the first substrate and the second substrate, and the frame cooperates with the first substrate and the second substrate to form a cavity for accommodating the liquid crystal to be measured. The above measuring device is applied to the measurement of the dielectric constant of liquid crystal in the terahertz wave frequency band.

Description

technical field [0001] The present disclosure relates to the technical field of liquid crystal devices, in particular to a measuring device, measuring system and measuring method for the dielectric constant of liquid crystals. Background technique [0002] Terahertz (THz for short) is a unit of frequency, 1 terahertz is equal to 10 12 Hertz and terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1 to 10 terahertz. In recent years, the application of liquid crystal materials in the terahertz frequency band has become more and more extensive. Liquid crystal terahertz devices (such as polarizers, phase shifters, wave plates, filters, etc.) can be easily tuned by changing the external electric field or external magnetic field. , and has the advantages of easy low-voltage modulation and low power consumption. [0003] Accurate measurement of the dielectric constant of liquid crystal materials in the terahertz frequency band is the key to the design...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26
CPCG01R27/2617G01R27/2623G01R27/2682G01R27/26
Inventor 卢永春
Owner BOE TECH GRP CO LTD
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