Liquid crystal phase shifter, phase shift method and making method of liquid crystal phase shifter

Abstract

The invention discloses a liquid crystal phase shifter, a phase shift method and a making method of the liquid crystal phase shifter. The phase shifter comprises a first substrate, a second substrate,a first electrode layer arranged on the side, facing the second substrate, of the first substrate, a second electrode layer and multiple isolation belts arranged between the first electrode layer andthe second substrate; the first substrate and the second substrate are subjected to paired box arrangement, the second electrode layer is arranged on the side, facing the first substrate, of the second substrate and comprises multiple electrically isolated electrode plates, the multiple isolation belts, the first electrode layer, the second electrode layer and a liquid crystal layer between the first electrode layer and the second electrode layer form multiple mutually independent sealing areas, each electrode plate corresponds to one sealing area, and liquid crystals with dielectric constants which are not exactly the same are sealed in the sealing areas. The degree of phase shift of the liquid crystal phase shifter is increased.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal phase shifter, a phase shifting method and a manufacturing method thereof. Background technique [0002] A phase shifter is a device that can adjust the phase of a wave. It is widely used in the fields of radar, missile attitude control, accelerator, communication, instrumentation and even music. Liquid crystal phase shifters have great advantages in continuous phase modulation, but due to the small dielectric constant of liquid crystals, they cannot meet the requirements of phase modulation well, so it is necessary to extend the microstrip line to meet the requirements of phase modulation. [0003] Due to the limitation of the dielectric constant of the liquid crystal itself, the liquid crystal phase shifter must be made long enough to achieve a satisfactory degree of phase shift, and the phase shifter is too long, which not only increases the loss, but also in...

AI Technical Summary

Problems solved by technology

Liquid crystal phase shifters have great advantages in continuous phase modulation, but due to the small dielectric constant of liquid crystals, they cannot meet the requirements of phase modulation well, so it is necessary to extend the microstrip line to meet the requirements of phase modulation

[0003] Due to the limitation of the dielectric constant of the liquid crystal itself, the liquid crystal phase shifter must be made long enough to achieve a satisfactory degree of phase shift, and the phase shifter is too long, which not only increases the loss, but also increases its volume and weight

[0004] Traditional liquid crystal phase shifters such as figure 1 As shown, the dielectric constant of the liquid crystal layer is the same everywhere, and the dielectric constant of the two liquid crystals after mixing is smaller than the sum of the dielectric constants before mixing, because the dielectric constant in the mixed crystal changes linearly, that is, ε=c 1 ×ε 1 +c 2 ×ε 2 Among them, c is the concentration, ε is the dielectric constant, so when the liquid crystals are mixed with each other, the dielectric constant will decrease, thereby reducing the phase shift degree of the phase shifter

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