Patterned conductor, sheet with conductor, heating plate, vehicle, and manufacturing method of patterned conductor

A patterned conductor comprising a metal linear conductor positioned on a placement surface,

• wherein:
• the linear conductor includes, in a section orthogonal to a longitudinal direction thereof, a plurality of metal crystal grains;
• the linear conductor includes, in one section orthogonal to the longitudinal direction thereof, a metal crystal grain(s) having a length h0 along a normal direction to the placement surface is larger than one third of a height H of the linear conductor along the normal direction to the placement surface, in which an average of a diameter of a circle having the same area as an area of the metal crystal grain(s) is smaller than a half of the height H of the linear conductor along the normal direction to the placement surface;
• a plurality of the linear conductors are arranged with a gap(s) therebetween in one direction, each linear conductor extending in a direction not parallel to the one direction;
• and
• regarding a metal crystal grain(s) included in the one section and having the length h0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, a value of a ratio (D2/w), which is a ratio of an average D2 of a dimension of the gap along the one direction with respect to an average w of a length along the placement surface in said section, is not less than 200 and not more than 2400.

A manufacturing method of a patterned conductor including a metal linear conductor positioned on one placement surface, the manufacturing method comprising:

• a step of providing a metal film on a substrate;
• a step of providing a resist pattern on the metal film, and etching the metal film with the resist pattern serving as a mask;
• and
• a step of removing the resist pattern;
• wherein:
• in one section of the metal film, the metal film includes a metal crystal grain(s) having a length h0 along a normal direction of the metal film, which length is larger than one third of a height H along the normal direction of the metal film, in which a minimum value of a ratio (h0/w0), which is a ratio of the length h0 of the metal crystal grain(s) along the normal direction of the metal film with respect to a length w0 along the placement surface is not less than 1.2;
• a plurality of the linear conductors are arranged with a gap(s) therebetween in one direction, each linear conductor extending in a direction not parallel to the one direction;
• and
• regarding a metal crystal grain(s) included in the one section and having the length h0 along the normal direction to the placement surface, which length is larger than one third of the height H of the linear conductor along the normal direction to the placement surface, a value of a ratio (D2/w), which is a ratio of an average D2 of a dimension of the gap along the one direction with respect to an average w of a length along the placement surface in said section, is not less than 200 and not more than 2400.