Patent ID: 11949141
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A phase shifter, comprising: a first substrate, a second substrate, a dielectric layer, a transmission line, a ground electrode and at least one auxiliary electrode, wherein the first substrate and the second substrate are opposite to each other, the dielectric layer is between the first substrate and the second substrate, the transmission line is between the second substrate and the dielectric layer, the auxiliary electrode is between the first substrate and the dielectric layer, and the ground electrode is on a side of the second substrate distal to the dielectric layer; a dielectric constant of the dielectric layer changes with a voltage between the auxiliary electrode and the transmission line;
an orthographic projection of the transmission line on the first substrate overlaps with an orthographic projection of the auxiliary electrode on the first substrate, and a portion of the orthographic projection of the transmission line on the first substrate exceeds the orthographic projection of the auxiliary electrode on the first substrate;
wherein the at least one auxiliary electrode comprises a plurality of auxiliary electrodes sequentially arranged at intervals along an extension direction of the transmission line;
the transmission line comprises a plurality of first transmission parts and a plurality of second transmission parts, wherein the plurality of first transmission parts and the plurality of second transmission parts are alternately arranged one by one along the extension direction of the transmission line; the plurality of first transmission parts are in one-to-one correspondence with the plurality of auxiliary electrodes, and an orthogonal projection of the first transmission part on the first substrate does not exceed an orthogonal projection of the auxiliary electrode corresponding to the first transmission part on the first substrate; and
the phase shifter further comprises a plurality of reference electrodes electrically coupled to the plurality of auxiliary electrodes in a one-to-one correspondence; wherein the plurality of reference electrodes are insulated and separated from the ground electrode, and an orthographic projection of each of the plurality of reference electrodes on the second substrate at least partially overlaps with an orthographic projection of the ground electrode on the second substrate.