Scanning antenna and method for manufacturing same

A scanning antenna including a plurality of antenna units arranged in the scanning antenna, the scanning antenna comprising:

• a TFT substrate including:
• a first dielectric substrate,
• a plurality of TFTs supported by the first dielectric substrate,
• a plurality of gate bus lines,
• a plurality of source bus lines, and
• a plurality of patch electrodes;
• a slot substrate including:
• a second dielectric substrate, and
• a slot electrode formed on a first main surface of the second dielectric substrate;
• a liquid crystal layer provided between the TFT substrate and the slot substrate;
• and
• a reflective conductive plate provided opposing a second main surface of the second dielectric substrate opposite to the first main surface with a dielectric layer interposed between the reflective conductive plate and the second dielectric substrate,
• wherein the scanning antenna has a tiling structure in which a plurality of scanning antenna portions are bonded together,
• each of the plurality of scanning antenna portions includes a TFT substrate portion and a slot substrate portion, and
• the plurality of scanning antenna portions include,
• a scanning antenna portion including, on a side to be bonded with an adjacent scanning antenna portion, a side in which the TFT substrate portion protrudes beyond the slot substrate portion, and
• a scanning antenna portion including, on a side to be bonded with an adjacent scanning antenna portion, a side in which the slot substrate portion protrudes beyond the TFT substrate portion.