Patent ID: 6511588
Filing Date: 2003-01-28
Classification: C25D,H01L

Abstract:
A plating method which comprisesadding an additive which hinders growth of plating metal film to a plating solution so as to satisfy the following conditions: 0.005Ã—h2/w0.5Ã—h2/w wherein D is a diffusion coefficient (m2/sec) of the additive; &kgr; is a surface reaction rate (m/sec) of adsorption or consumption of the additive; h is a height (m) of a trench or hole; and w is the minimum width (m) of the trench or the minimum radius (m) of the hole, and0.01&lE;&THgr;&lE;0.7 wherein &THgr; is a ratio of (plating film growth rate in the presence of additive)/(plating film growth rate in the absence of additive), or (plating current in the presence of additive)/(plating current in the absence of additive) at the same plating potential, in the case of filling the trench having the minimum width of 10âˆ’6 m or less, or the hole having the minimum radius of 10âˆ’6 m or less, andforming the plating metal in the trench or hole.