Display device

A display device comprising:

• a base substrate;
• a TFT layer provided on the base substrate and formed by sequentially layering a first inorganic insulating film, a first metal film, a second inorganic insulating film, a second metal film, a third inorganic insulating film, and a third metal film;
• a light-emitting element provided on the TFT layer and included in a display region;
• a plurality of first wiring lines provided by the first metal film in a state of extending in parallel to each other in the display region;
• a plurality of second wiring lines provided by the second metal film in a state of extending in parallel to each other in an extending direction of each of the plurality of first wiring lines in the display region;
• and
• a plurality of third wiring lines provided by the third metal film in a state of extending in parallel to each other in a direction intersecting each of the plurality of first wiring lines in the display region,
• wherein in a state of overlapping an region surrounded by a pair of third wiring lines adjacent to each other among the plurality of third wiring lines and a pair of second wiring lines adjacent to each other among the plurality of second wiring lines, a second metal layer formed by the second metal film is provided in an island shape along the pair of third wiring lines adjacent to each other.