Antenna unit and antenna device

An antenna unit and an antenna device are disclosed. The antenna unit includes a first substrate, a signal line, a first electrode, a second electrode, and an auxiliary electrode. The first substratehas a first surface and a second surface opposite to the first surface. The signal line is located on the first surface of the first substrate. The first electrode is located on the second surface ofthe first substrate. The first electrode overlaps the signal line. The first electrode is ring-shaped. The second electrode has a through hole. The receiving space of the through hole overlaps the first electrode. The auxiliary electrode overlaps the accommodation space of the through hole and the first electrode. 一种天线单元以及天线装置。天线单元包括第一基板、信号线、第一电极、第二电极以及辅助电极。第一基板具有第一面以及相对于第一面的第二面。信号线位于第一基板的第一面上。第一电极位于第一基板的第二面上。第一电极与信号线重叠。第一电极为环形。第二电极具有一通孔。通孔的容置空间重叠于第一电极。辅助电极重叠于通孔的容置空间以及第一电极。