Liquid crystal phase shifting unit, manufacturing method therefor, liquid crystal phase shifter, and antenna

A manufacturing method for a liquid crystal phase shift unit, applied to a liquid crystal phase shift, wherein the liquid crystal phase shifting unit comprises:

• a first substrate and a second substrate that are opposite to each other, wherein a space between the first substrate and the second substrate comprises a liquid crystal filling region;
• a microstrip line provided on a surface of the first substrate facing towards the second substrate, wherein an orthographic projection of the microstrip line on the first substrate is located in the liquid crystal filling region;
• support structures provided between the first substrate and the second substrate and located in the liquid crystal filling region, wherein an orthographic projection of each of the support structures on the first substrate does not overlap the microstrip line;
• and
• liquid crystal molecules, the liquid crystal filling region being filled with the liquid crystal molecules, wherein the orthographic projections of two adjacent support structures of the support structures on the first substrate do not overlap the microstrip line;
• and
• wherein the manufacturing method comprises:
• forming the microstrip line on the first substrate in such a manner that the orthographic projection of the microstrip line on the first substrate is located in the liquid crystal filling region;
• forming the support structures on the first substrate, wherein the support structures are located in the liquid crystal filling region, and the orthographic projection of each of the support structures on the first substrate does not overlap the microstrip line;
• providing the second substrate at a side of the support structures facing away from the first substrate;
• and
• filling the liquid crystal filling region with the liquid crystal molecules.

A liquid crystal phase shifter, comprising a plurality of liquid crystal phase shifting units arranged in an array, wherein each of the plurality of liquid crystal phase shifting units comprises:

• a first substrate and a second substrate that are opposite to each other, wherein a space between the first substrate and the second substrate comprises a liquid crystal filling region;
• a microstrip line provided on a surface of the first substrate facing towards the second substrate, wherein an orthographic projection of the microstrip line on the first substrate is located in the liquid crystal filling region;
• support structures provided between the first substrate and the second substrate and located in the liquid crystal filling region, wherein an orthographic projection of each of the support structures on the first substrate does not overlap the microstrip line;
• and
• liquid crystal molecules, the liquid crystal filling region being filled with the liquid crystal molecules,
• wherein the orthographic projections of two adjacent support structures of the support structures on the first substrate do not overlap the microstrip line.