| abstract |
At least one kind of fine particles selected from the group consisting of metal fine particles and metal oxide fine particles having a volume average particle diameter of 10 mu m or less and at least one kind of fine particles having a volume average particle diameter A step of forming a conductive coating layer by applying a coating material containing carbon powder having a thickness of 10 占 퐉 or less, a step of forming at least one kind of metal plating layer, a step of removing the three-dimensional mesh- And a step of performing reduction and thermal diffusion of the metal plating layer. |